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update.doc

Full analysis: https://app.any.run/tasks/f137cfd7-f684-4f19-9e28-fae77781de7a
Verdict: Malicious activity
Threats:

A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection.

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Analysis date: January 10, 2019, 17:51:44
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
exploit
CVE-2017-11882
loader
rat
remcos
Indicators:
MIME: text/rtf
File info: Rich Text Format data, unknown version
MD5:

B44DE49A2B2166CF33811FD70A959B86

SHA1:

CD416D0B1852B0889FABE877AF447C1751174B18

SHA256:

F09003C1635F7AB1DB672CF69516CE98B272C62F7A2E3C990E742C443DE094F7

SSDEEP:

96:o3sWv7oP8GtMjISs5OLjBHRi11AsaHMGOTsn:Os27OFcLs8nhRivTGh

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

      • WindowsSrv.exe (PID: 3820)
      • WindowsSrv.exe (PID: 3116)
      • WinDir.exe (PID: 2480)
      • WindowsSrv.exe (PID: 3920)
      • WinDir.exe (PID: 2260)
      • WindowsSrv.exe (PID: 3684)
      • WinDir.exe (PID: 2180)
      • WindowsSrv.exe (PID: 3784)
      • WindowsSrv.exe (PID: 3708)

    • Suspicious connection from the Equation Editor

      • EQNEDT32.EXE (PID: 3232)

    • Equation Editor starts application (CVE-2017-11882)

      • EQNEDT32.EXE (PID: 3232)

    • Changes the autorun value in the registry

      • WindowsSrv.exe (PID: 3820)
      • WinDir.exe (PID: 2180)

    • Runs PING.EXE for delay simulation

      • cmd.exe (PID: 3312)

    • Downloads executable files from the Internet

      • EQNEDT32.EXE (PID: 3232)

    • REMCOS RAT was detected

      • WinDir.exe (PID: 2180)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • EQNEDT32.EXE (PID: 3232)
      • WindowsSrv.exe (PID: 3820)

    • Application launched itself

      • WindowsSrv.exe (PID: 3116)
      • WindowsSrv.exe (PID: 3920)
      • WinDir.exe (PID: 2480)
      • WindowsSrv.exe (PID: 3684)

    • Creates files in the user directory

      • EQNEDT32.EXE (PID: 3232)
      • WindowsSrv.exe (PID: 3820)
      • WinDir.exe (PID: 2180)

    • Starts CMD.EXE for commands execution

      • WindowsSrv.exe (PID: 3820)

  • INFO

    • Reads Microsoft Office registry keys

      • WINWORD.EXE (PID: 2984)

    • Creates files in the user directory

      • WINWORD.EXE (PID: 2984)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.rtf | Rich Text Format (100)
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
44
Monitored processes
13
Malicious processes
7
Suspicious processes
1

Behavior graph

Click at the process to see the details
start drop and start winword.exe no specs eqnedt32.exe windowssrv.exe no specs windowssrv.exe windowssrv.exe no specs cmd.exe no specs ping.exe no specs windir.exe no specs windowssrv.exe no specs #REMCOS windir.exe windir.exe no specs windowssrv.exe no specs windowssrv.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2984"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\AppData\Local\Temp\update.doc.rtf"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Word
Version:
14.0.6024.1000
3232"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -EmbeddingC:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
svchost.exe
User:
admin
Company:
Design Science, Inc.
Integrity Level:
MEDIUM
Description:
Microsoft Equation Editor
Exit code:
0
Version:
00110900
3116"C:\Users\admin\AppData\Roaming\WindowsSrv.exe" C:\Users\admin\AppData\Roaming\WindowsSrv.exe—EQNEDT32.EXE
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3820"C:\Users\admin\AppData\Roaming\WindowsSrv.exe" C:\Users\admin\AppData\Roaming\WindowsSrv.exe
WindowsSrv.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3920"C:\Users\admin\AppData\Roaming\WindowsSrv.exe" 2 3820 2486062C:\Users\admin\AppData\Roaming\WindowsSrv.exe—WindowsSrv.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3312cmd /c ""C:\Users\admin\AppData\Local\Temp\install.bat" "C:\Windows\system32\cmd.exe—WindowsSrv.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
1
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
3956PING 127.0.0.1 -n 2 C:\Windows\system32\PING.EXE—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
TCP/IP Ping Command
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
2480"C:\Users\admin\AppData\Roaming\WinDir\WinDir.exe" C:\Users\admin\AppData\Roaming\WinDir\WinDir.exe—cmd.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3684"C:\Users\admin\AppData\Roaming\WindowsSrv.exe"C:\Users\admin\AppData\Roaming\WindowsSrv.exe—WindowsSrv.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
2180"C:\Users\admin\AppData\Roaming\WinDir\WinDir.exe" C:\Users\admin\AppData\Roaming\WinDir\WinDir.exe
WinDir.exe
User:
admin
Integrity Level:
MEDIUM
Total events
1 801
Read events
1 445
Write events
0
Delete events
0

Modification events

No data
Executable files
3
Suspicious files
0
Text files
3
Unknown types
2

Dropped files

PID
Process
Filename
Type
2984WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVR67F2.tmp.cvr —
MD5:—
SHA256:—
2180WinDir.exeC:\Users\admin\AppData\Roaming\WinDir\logs.dattext
MD5:9FB5DE160B9FB8E69CBD0DC474314899
SHA256:77D636F33CBBB841EF003E9564D8870E28EFBA2994FBACC81E017AFC24C1AC44
2984WINWORD.EXEC:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotmpgc
MD5:C231A293978C0BF5F9099FB6C7CA53B4
SHA256:E9628B246FEE0C67CCEFA3DC6FD0A5A988D97D6F841FC6A6C3C47DAC4DB57BD7
2984WINWORD.EXEC:\Users\admin\AppData\Local\Temp\~$date.doc.rtfpgc
MD5:3B52499AC8B7D4DCA2A21DAAAF81DCB0
SHA256:7F6B568567477B805113A434FE23120239C8C1DBBA69988A59D15DED67BEB334
3232EQNEDT32.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\R9ZEWH8D\137[1].exeexecutable
MD5:F42E9F832B70DD845FED6F2988DC0F8E
SHA256:795446E5882D14EEDAFD6EE7483F095BBD5AD3E951DDA5FE822BA3FB9D949F85
3232EQNEDT32.EXEC:\Users\admin\AppData\Roaming\WindowsSrv.exeexecutable
MD5:F42E9F832B70DD845FED6F2988DC0F8E
SHA256:795446E5882D14EEDAFD6EE7483F095BBD5AD3E951DDA5FE822BA3FB9D949F85
3820WindowsSrv.exeC:\Users\admin\AppData\Local\Temp\install.battext
MD5:CFC40020904E33C2925AE7BB81EFEA9A
SHA256:B5420203DA9B8BD53A9EA32B69EBE8C3EC6581977FED8298E5D553FC9450C713
3820WindowsSrv.exeC:\Users\admin\AppData\Roaming\WinDir\WinDir.exeexecutable
MD5:F42E9F832B70DD845FED6F2988DC0F8E
SHA256:795446E5882D14EEDAFD6EE7483F095BBD5AD3E951DDA5FE822BA3FB9D949F85
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
5
DNS requests
3
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3232
EQNEDT32.EXE
GET
200
64.32.6.209:80
http://micosoftoutlook.dns04.com/host/137.exe
US
executable
762 Kb
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2180
WinDir.exe
77.48.28.216:137
—
Liberty Global Operations B.V.
CZ
malicious
3232
EQNEDT32.EXE
64.32.6.209:80
micosoftoutlook.dns04.com
Sharktech
US
malicious

DNS requests

Domain
IP
Reputation
micosoftoutlook.dns04.com
  • 64.32.6.209
malicious
dns.msftncsi.com
  • 131.107.255.255
shared

Threats

PID
Process
Class
Message
3232
EQNEDT32.EXE
A Network Trojan was detected
ET CURRENT_EVENTS Possible Malicious Macro DL EXE Feb 2016
3232
EQNEDT32.EXE
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
1 ETPRO signatures available at the full report
No debug info
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Reports
update.doc