File name:

downloader.exe

Full analysis: https://app.any.run/tasks/9e38447f-58e6-4190-ba3d-d68ec72385d8
Verdict: Malicious activity
Analysis date: March 31, 2020, 08:06:00
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
malware
downloader
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (console) Intel 80386, for MS Windows
MD5:

7C50697E82AF91A4533FC7D340391836

SHA1:

23F002F051A9A7DCA73609A18E9552A0D42CFEDF

SHA256:

E3D83530ADB92A4C9ADEFD2651A01EFFD02DEE13487FE169E612424760700C25

SSDEEP:

96:v6NpR1JBKDZos2hZDqk+kkreoPMq6cZkqAO7VthcE0:SNjzYqsqZDqk+kroPMq6Ckqflf0

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

    No malicious indicators.

  • SUSPICIOUS

    • Creates files in the program directory

      • downloader.exe (PID: 2184)

    • Reads Internet Cache Settings

      • downloader.exe (PID: 1720)
      • downloader.exe (PID: 2184)
      • downloader.exe (PID: 3404)
      • downloader.exe (PID: 256)

    • Executable content was dropped or overwritten

      • downloader.exe (PID: 1720)
      • downloader.exe (PID: 3404)
      • downloader.exe (PID: 256)

  • INFO

    • Creates files in the user directory

      • opera.exe (PID: 3368)

    • Manual execution by user

      • downloader.exe (PID: 2184)
      • downloader.exe (PID: 3404)
      • downloader.exe (PID: 256)
      • a.exe (PID: 1940)
      • explorer.exe (PID: 3020)
      • a.exe (PID: 2676)
      • a.exe (PID: 2484)
      • opera.exe (PID: 3368)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win64 Executable (generic) (64.6)
.dll | Win32 Dynamic Link Library (generic) (15.4)
.exe | Win32 Executable (generic) (10.5)
.exe | Generic Win/DOS Executable (4.6)
.exe | DOS Executable Generic (4.6)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2017:06:28 15:56:39+02:00
PEType: PE32
LinkerVersion: 8
CodeSize: 2048
InitializedDataSize: 3072
UninitializedDataSize: -
EntryPoint: 0x12e8
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows command line

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
Compilation Date: 28-Jun-2017 13:56:39
Detected languages:
  • English - United States
Debug artifacts:
  • c:\documents and settings\ever\my documents\visual studio 2005\projects\downloader\release\downloader.pdb

DOS Header

Magic number: MZ
Bytes on last page of file: 0x0090
Pages in file: 0x0003
Relocations: 0x0000
Size of header: 0x0004
Min extra paragraphs: 0x0000
Max extra paragraphs: 0xFFFF
Initial SS value: 0x0000
Initial SP value: 0x00B8
Checksum: 0x0000
Initial IP value: 0x0000
Initial CS value: 0x0000
Overlay number: 0x0000
OEM identifier: 0x0000
OEM information: 0x0000
Address of NE header: 0x000000E0

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 4
Time date stamp: 28-Jun-2017 13:56:39
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_RELOCS_STRIPPED

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x00000752
0x00000800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.71732
.rdata
0x00002000
0x00000702
0x00000800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.35344
.data
0x00003000
0x00000384
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0.352759
.rsrc
0x00004000
0x000001AC
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.26515

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.05186
338
Latin 1 / Western European
English - United States
RT_MANIFEST

Imports

KERNEL32.dll
MSVCR80.dll
urlmon.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
57
Monitored processes
10
Malicious processes
0
Suspicious processes
0

Behavior graph

Click at the process to see the details
start downloader.exe downloader.exe downloader.exe downloader.exe a.exe no specs explorer.exe no specs a.exe a.exe no specs a.exe opera.exe

Process information

PID
CMD
Path
Indicators
Parent process
256"C:\Users\admin\Desktop\downloader.exe" C:\Users\admin\Desktop\downloader.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\downloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\urlmon.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-ole32-l1-1-0.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
1720"C:\Users\admin\Desktop\downloader.exe" C:\Users\admin\Desktop\downloader.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\downloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\urlmon.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-ole32-l1-1-0.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
1940"C:\Program Files\a.exe" C:\Program Files\a.exe
explorer.exe
User:
admin
Company:
Kakao Corp.
Integrity Level:
HIGH
Description:
KakaoTalk Setup
Exit code:
2
Version:
3.1.1.2441
Modules
Images
c:\program files\a.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
2184"C:\Users\admin\Desktop\downloader.exe" C:\Users\admin\Desktop\downloader.exe
explorer.exe
User:
admin
Integrity Level:
HIGH
Exit code:
3221225786
Modules
Images
c:\users\admin\desktop\downloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\urlmon.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-ole32-l1-1-0.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
2484"C:\Program Files\a.exe" C:\Program Files\a.exe—explorer.exe
User:
admin
Company:
Kakao Corp.
Integrity Level:
MEDIUM
Description:
KakaoTalk Setup
Exit code:
3221226540
Version:
3.1.1.2441
Modules
Images
c:\program files\a.exe
c:\systemroot\system32\ntdll.dll
2676"C:\Program Files\a.exe" C:\Program Files\a.exe
explorer.exe
User:
admin
Company:
Kakao Corp.
Integrity Level:
HIGH
Description:
KakaoTalk Setup
Exit code:
2
Version:
3.1.1.2441
Modules
Images
c:\program files\a.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
3020"C:\Windows\explorer.exe" C:\Windows\explorer.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\explorer.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
3360"c:\Program Files\a.exe"c:\Program Files\a.exe—downloader.exe
User:
admin
Company:
Kakao Corp.
Integrity Level:
MEDIUM
Description:
KakaoTalk Setup
Exit code:
3221226540
Version:
3.1.1.2441
Modules
Images
c:\program files\a.exe
c:\systemroot\system32\ntdll.dll
3368"C:\Program Files\Opera\opera.exe" C:\Program Files\Opera\opera.exe
explorer.exe
User:
admin
Company:
Opera Software
Integrity Level:
MEDIUM
Description:
Opera Internet Browser
Exit code:
0
Version:
1748
Modules
Images
c:\program files\opera\opera.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\psapi.dll
c:\windows\system32\wintrust.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\crypt32.dll
c:\windows\system32\msasn1.dll
c:\windows\system32\rpcrt4.dll
3404"C:\Users\admin\Desktop\downloader.exe" C:\Users\admin\Desktop\downloader.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\downloader.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\urlmon.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-ole32-l1-1-0.dll
c:\windows\system32\ole32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
Total events
339
Read events
245
Write events
94
Delete events
0

Modification events

(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
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
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(1720) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
(PID) Process:(2184) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(2184) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(2184) downloader.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
Executable files
3
Suspicious files
23
Text files
3
Unknown types
0

Dropped files

PID
Process
Filename
Type
2184downloader.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\78RFYB7Z\KakaoTalk_Setup[1].exe —
MD5:—
SHA256:—
2184downloader.exeC:\Program Files\a.exe —
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Roaming\Opera\Opera\opr9597.tmp —
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Roaming\Opera\Opera\opr95C7.tmp —
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Local\Opera\Opera\cache\sesn\opr00001.tmp —
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\6F2H3NUBXBOKPH6SI30J.temp —
MD5:—
SHA256:—
3404downloader.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B6QGX7LP\KakaoTalk_Setup[1].exeexecutable
MD5:—
SHA256:—
256downloader.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B6QGX7LP\KakaoTalk_Setup[1].exeexecutable
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Roaming\Opera\Opera\operaprefs.initext
MD5:—
SHA256:—
3368opera.exeC:\Users\admin\AppData\Local\Opera\Opera\cache\CACHEDIR.TAGtext
MD5:E717F92FA29AE97DBE4F6F5C04B7A3D9
SHA256:5BBD5DCBF87FD8CD7544C522BADF22A2951CF010AD9F25C40F9726F09EA2B552
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
7
DNS requests
3
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
1720
downloader.exe
GET
—
203.238.180.12:80
http://app.pc.kakao.com/talk/win32/KakaoTalk_Setup.exe
KR
—
—
malicious
2184
downloader.exe
GET
—
203.238.180.12:80
http://app.pc.kakao.com/talk/win32/KakaoTalk_Setup.exe
KR
—
—
malicious
3404
downloader.exe
GET
—
203.238.180.12:80
http://app.pc.kakao.com/talk/win32/KakaoTalk_Setup.exe
KR
—
—
malicious
256
downloader.exe
GET
—
203.238.180.12:80
http://app.pc.kakao.com/talk/win32/KakaoTalk_Setup.exe
KR
—
—
malicious
3368
opera.exe
GET
200
93.184.220.29:80
http://crl4.digicert.com/DigiCertHighAssuranceEVRootCA.crl
US
der
564 b
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
1720
downloader.exe
203.238.180.12:80
app.pc.kakao.com
Kakao Corp
KR
suspicious
2184
downloader.exe
203.238.180.12:80
app.pc.kakao.com
Kakao Corp
KR
suspicious
3404
downloader.exe
203.238.180.12:80
app.pc.kakao.com
Kakao Corp
KR
suspicious
256
downloader.exe
203.238.180.12:80
app.pc.kakao.com
Kakao Corp
KR
suspicious
3368
opera.exe
185.26.182.94:443
certs.opera.com
Opera Software AS
—
whitelisted
3368
opera.exe
93.184.220.29:80
crl4.digicert.com
MCI Communications Services, Inc. d/b/a Verizon Business
US
whitelisted

DNS requests

Domain
IP
Reputation
app.pc.kakao.com
  • 203.238.180.12
malicious
certs.opera.com
  • 185.26.182.94
  • 185.26.182.93
whitelisted
crl4.digicert.com
  • 93.184.220.29
whitelisted

Threats

PID
Process
Class
Message
1720
downloader.exe
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
3404
downloader.exe
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
No debug info
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Reports
downloader.exe