URL:

https://work.weixin.qq.com/wework_admin/commdownload?vcode=764329b1d36cddac903213501e0904d7&from=mail&src=app&invite_source=55&invite_channel=3&invite_olduser=0&inviter_identity=1&invite_seqid=3

Full analysis: https://app.any.run/tasks/3dc2a1e5-afaa-4484-93ed-c61cd93483f8
Verdict: Malicious activity
Analysis date: January 05, 2021, 08:10:24
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MD5:

63C9717EB8EEB8F3A847A79D2B2E9CAE

SHA1:

D8868887B6F26AD0F135F7333AB031898F954850

SHA256:

72ADFB454CB0A8C4DA8ED8379206D97C12D8F9701B157B6B429C15190EC96A1F

SSDEEP:

3:N8bXOLhaAfVRdLF2KahGUBvEGUPRf/JKWp4LAdDMnQf5RtIMRywJdKC7:2iL46dLIhDBsG45KKDMnQftIQhPKC7

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Application was dropped or rewritten from another process

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • WeCom_3.1.1.3001.exe (PID: 2760)
      • MeetingAppInstaller.exe (PID: 3508)

    • Loads dropped or rewritten executable

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • MeetingAppInstaller.exe (PID: 3508)
      • wxdriveinstaller.exe (PID: 3060)
      • WXWork.exe (PID: 2752)
      • regsvr32.exe (PID: 1604)

    • Drops executable file immediately after starts

      • MeetingAppInstaller.exe (PID: 3508)

    • Registers / Runs the DLL via REGSVR32.EXE

      • wxdriveinstaller.exe (PID: 3060)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • chrome.exe (PID: 1796)
      • MeetingAppInstaller.exe (PID: 3508)
      • wxdriveinstaller.exe (PID: 3060)
      • WeCom_3.1.1.3001.exe (PID: 2116)

    • Creates a directory in Program Files

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • MeetingAppInstaller.exe (PID: 3508)
      • wxdriveinstaller.exe (PID: 3060)

    • Drops a file with too old compile date

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • wxdriveinstaller.exe (PID: 3060)

    • Drops a file that was compiled in debug mode

      • MeetingAppInstaller.exe (PID: 3508)
      • wxdriveinstaller.exe (PID: 3060)
      • WeCom_3.1.1.3001.exe (PID: 2116)

    • Drops a file with a compile date too recent

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • wxdriveinstaller.exe (PID: 3060)
      • MeetingAppInstaller.exe (PID: 3508)

    • Creates files in the program directory

      • MeetingAppInstaller.exe (PID: 3508)
      • WeCom_3.1.1.3001.exe (PID: 2116)
      • wxdriveinstaller.exe (PID: 3060)

    • Creates files in the user directory

      • wxdriveinstaller.exe (PID: 3060)
      • regsvr32.exe (PID: 1604)
      • WeCom_3.1.1.3001.exe (PID: 2116)
      • WXWork.exe (PID: 2752)

    • Creates/Modifies COM task schedule object

      • regsvr32.exe (PID: 1604)

    • Changes default file association

      • wxdriveinstaller.exe (PID: 3060)
      • WXWork.exe (PID: 2752)

    • Creates a software uninstall entry

      • WeCom_3.1.1.3001.exe (PID: 2116)

  • INFO

    • Application launched itself

      • chrome.exe (PID: 1796)

    • Reads the hosts file

      • chrome.exe (PID: 1796)
      • chrome.exe (PID: 336)

    • Reads settings of System Certificates

      • chrome.exe (PID: 1796)
      • WXWork.exe (PID: 2752)

    • Dropped object may contain Bitcoin addresses

      • WeCom_3.1.1.3001.exe (PID: 2116)
      • wxdriveinstaller.exe (PID: 3060)
      • MeetingAppInstaller.exe (PID: 3508)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
57
Monitored processes
16
Malicious processes
5
Suspicious processes
1

Behavior graph

Click at the process to see the details
drop and start drop and start start chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs wecom_3.1.1.3001.exe no specs wecom_3.1.1.3001.exe meetingappinstaller.exe wxdriveinstaller.exe regsvr32.exe no specs wxwork.exe

Process information

PID
CMD
Path
Indicators
Parent process
336"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --field-trial-handle=1024,8792541378595596295,2334159481139442011,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=network --service-request-channel-token=4189311989878020505 --mojo-platform-channel-handle=1532 /prefetch:8C:\Program Files\Google\Chrome\Application\chrome.exe
chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
376"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1024,8792541378595596295,2334159481139442011,131072 --enable-features=PasswordImport --disable-gpu-sandbox --use-gl=disabled --gpu-preferences=KAAAAAAAAADgACAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=13369512314040319842 --mojo-platform-channel-handle=3420 /prefetch:2C:\Program Files\Google\Chrome\Application\chrome.exe—chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
984"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1024,8792541378595596295,2334159481139442011,131072 --enable-features=PasswordImport --gpu-preferences=KAAAAAAAAADgACAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=6280820279395759963 --mojo-platform-channel-handle=1040 --ignored=" --type=renderer " /prefetch:2C:\Program Files\Google\Chrome\Application\chrome.exe—chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
1136"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=watcher --main-thread-id=2640 --on-initialized-event-handle=316 --parent-handle=320 /prefetch:6C:\Program Files\Google\Chrome\Application\chrome.exe—chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
1604regsvr32 /s "C:\Program Files (x86)\WXDrive\extensions\x86\WeDrivePlugin32_97.dll"C:\Windows\system32\regsvr32.exe—wxdriveinstaller.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Microsoft(C) Register Server
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\regsvr32.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
1796"C:\Program Files\Google\Chrome\Application\chrome.exe" --disk-cache-dir=null --disk-cache-size=1 --media-cache-size=1 --disable-gpu-shader-disk-cache --disable-background-networking "https://work.weixin.qq.com/wework_admin/commdownload?vcode=764329b1d36cddac903213501e0904d7&from=mail&src=app&invite_source=55&invite_channel=3&invite_olduser=0&inviter_identity=1&invite_seqid=3"C:\Program Files\Google\Chrome\Application\chrome.exe
explorer.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\shell32.dll
c:\windows\system32\gdi32.dll
2116"C:\Users\admin\Downloads\WeCom_3.1.1.3001.exe" C:\Users\admin\Downloads\WeCom_3.1.1.3001.exe
chrome.exe
User:
admin
Integrity Level:
HIGH
Description:
企业微信安装程序
Exit code:
0
Version:
3.1.1.3001
Modules
Images
c:\users\admin\downloads\wecom_3.1.1.3001.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
2244"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1024,8792541378595596295,2334159481139442011,131072 --enable-features=PasswordImport --lang=en-US --extension-process --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=1427154657220664124 --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2356 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exe—chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
2676"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1024,8792541378595596295,2334159481139442011,131072 --enable-features=PasswordImport --lang=en-US --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=11311492698729143849 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2144 /prefetch:1C:\Program Files\Google\Chrome\Application\chrome.exe—chrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
LOW
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
2752"C:\Program Files (x86)\WXWork\WXWork.exe"C:\Program Files (x86)\WXWork\WXWork.exe
WeCom_3.1.1.3001.exe
User:
admin
Company:
Tencent
Integrity Level:
MEDIUM
Exit code:
0
Version:
3.1.1.3001
Modules
Images
c:\program files (x86)\wxwork\wxwork.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files (x86)\wxwork\3.1.1.3001\adj.dll
c:\program files (x86)\wxwork\3.1.1.3001\msvcp140.dll
c:\program files (x86)\wxwork\3.1.1.3001\vcruntime140.dll
c:\program files (x86)\wxwork\3.1.1.3001\api-ms-win-crt-runtime-l1-1-0.dll
c:\program files (x86)\wxwork\3.1.1.3001\ucrtbase.dll
c:\program files (x86)\wxwork\3.1.1.3001\api-ms-win-core-timezone-l1-1-0.dll
Total events
1 516
Read events
1 343
Write events
170
Delete events
3

Modification events

(PID) Process:(1136) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:writeName:1796-13254307839734875
Value:
259
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:failed_count
Value:
0
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
2
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
01000000
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
1
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:dr
Value:
1
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome
Operation:writeName:UsageStatsInSample
Value:
0
(PID) Process:(1796) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:3252-13245750958665039
Value:
0
(PID) Process:(1796) chrome.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:writeName:usagestats
Value:
0
Executable files
315
Suspicious files
41
Text files
224
Unknown types
82

Dropped files

PID
Process
Filename
Type
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\BrowserMetrics\BrowserMetrics-5FF41F00-704.pma —
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\11702f04-1033-4900-b140-c0c508981209.tmp —
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\000048.dbtmp —
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.oldtext
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Platform Notifications\LOG.old —
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.old~RF154252.TMPtext
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\LOG.oldtext
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\LOG.oldtext
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\shared_proto_db\LOG.old —
MD5:—
SHA256:—
1796chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\shared_proto_db\LOG.old~RF154456.TMP —
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
19
DNS requests
9
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2752
WXWork.exe
GET
—
182.254.116.117:80
http://182.254.116.117/d?dn=adc560794679979480c228514177bf94d6216e5c9e9b638d5c179fc7b71c7b76&id=2&ttl=1&clientip=1&type=a
CN
—
—
suspicious
2752
WXWork.exe
GET
200
104.18.21.226:80
http://ocsp2.globalsign.com/gsorganizationvalsha2g2/ME0wSzBJMEcwRTAJBgUrDgMCGgUABBQMnk2cPe3vhNiR6XLHz4QGvBl7BwQUlt5h8b0cFilTHMDMfTuDAEDmGnwCDF%2BaiOCYKNbCkhhpaA%3D%3D
US
der
1.54 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2752
WXWork.exe
104.18.21.226:80
—
Cloudflare Inc
US
shared
2752
WXWork.exe
182.254.116.117:80
—
Shenzhen Tencent Computer Systems Company Limited
CN
suspicious
336
chrome.exe
203.205.254.11:443
work.weixin.qq.com
—
CN
unknown
336
chrome.exe
2.16.186.19:443
dldir1.qq.com
Akamai International B.V.
—
whitelisted
336
chrome.exe
172.217.16.205:443
accounts.google.com
Google Inc.
US
whitelisted
336
chrome.exe
172.217.22.35:443
ssl.gstatic.com
Google Inc.
US
whitelisted
336
chrome.exe
2.16.186.10:443
dldir1.qq.com
Akamai International B.V.
—
whitelisted
336
chrome.exe
203.205.219.90:443
work.weixin.qq.com
—
CN
unknown
336
chrome.exe
172.217.18.110:443
clients4.google.com
Google Inc.
US
whitelisted
336
chrome.exe
172.217.23.110:443
sb-ssl.google.com
Google Inc.
US
whitelisted

DNS requests

Domain
IP
Reputation
work.weixin.qq.com
  • 203.205.254.11
  • 203.205.219.90
suspicious
accounts.google.com
  • 172.217.16.205
shared
dldir1.qq.com
  • 2.16.186.19
  • 2.16.186.10
  • 2.16.186.40
whitelisted
ssl.gstatic.com
  • 172.217.22.35
whitelisted
clients4.google.com
  • 172.217.18.110
whitelisted
sb-ssl.google.com
  • 172.217.23.110
whitelisted
gap.work.weixin.qq.com
  • 220.249.243.71
  • 157.255.245.177
unknown
wwcdn.weixin.qq.com
  • 150.109.206.166
  • 150.109.206.154
suspicious
i.work.weixin.qq.com
  • 49.51.190.133
  • 49.51.190.151
unknown

Threats

No threats detected
Process
Message
WeCom_3.1.1.3001.exe
C:\Program Files (x86)\WXWork3.1.1.3001
Interactive malware hunting service ANY.RUN
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ANY.RUN
Reports
https://work.weixin.qq.com/wework_admin/commdownload?vcode=764329b1d36cddac903213501e0904d7&from=mail&src=app&invite_source=55&invite_channel=3&invite_olduser=0&inviter_identity=1&invite_seqid=3