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Analysis
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max time kernel
149s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19/01/2024, 11:44
Static task
static1
Behavioral task
behavioral1
Sample
6789cecc505f1df9b92f14e313f17909.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
6789cecc505f1df9b92f14e313f17909.exe
Resource
win10v2004-20231215-en
General
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Target
6789cecc505f1df9b92f14e313f17909.exe
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Size
137KB
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MD5
6789cecc505f1df9b92f14e313f17909
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SHA1
0d594a246dc65d107481360ac4f1a1344b2baebc
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SHA256
6a0c4323f4136983cdb028b083730ac7dc3127087f495354dc3d8c07279aff92
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SHA512
573cbe0d2c1b57b3d19b85378431960cc429c9471795314d86d7249982c596388874fea95d4e6f149b6eb72ab6340b6a937e44ceb37ddf5435ff01396f5dfe01
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SSDEEP
3072:PhqtN9km5IS68sxKug3EZ7DIL0N52xyYArYB32Ii4DHh89q3HD:s368scug3GA4NgKMnBOq3
Malware Config
Extracted
njrat
0.6.4
HacKed
nj.con-ip.com:1177
5f805e177fa7c673482c92c255460b67
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reg_key
5f805e177fa7c673482c92c255460b67
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 1228 netsh.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation 6789cecc505f1df9b92f14e313f17909.exe Key value queried \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation CJRqJYXiFF6jGf2AbP16.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5f805e177fa7c673482c92c255460b67.exe System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5f805e177fa7c673482c92c255460b67.exe System.exe -
Executes dropped EXE 2 IoCs
pid Process 1724 CJRqJYXiFF6jGf2AbP16.exe 2976 System.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5f805e177fa7c673482c92c255460b67 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System.exe\" .." System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5f805e177fa7c673482c92c255460b67 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System.exe\" .." System.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini 6789cecc505f1df9b92f14e313f17909.exe File opened for modification C:\Windows\assembly\Desktop.ini 6789cecc505f1df9b92f14e313f17909.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly 6789cecc505f1df9b92f14e313f17909.exe File created C:\Windows\assembly\Desktop.ini 6789cecc505f1df9b92f14e313f17909.exe File opened for modification C:\Windows\assembly\Desktop.ini 6789cecc505f1df9b92f14e313f17909.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 48 IoCs
pid Process 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe 2976 System.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4460 6789cecc505f1df9b92f14e313f17909.exe Token: 33 4460 6789cecc505f1df9b92f14e313f17909.exe Token: SeIncBasePriorityPrivilege 4460 6789cecc505f1df9b92f14e313f17909.exe Token: SeDebugPrivilege 2976 System.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4460 wrote to memory of 1724 4460 6789cecc505f1df9b92f14e313f17909.exe 89 PID 4460 wrote to memory of 1724 4460 6789cecc505f1df9b92f14e313f17909.exe 89 PID 4460 wrote to memory of 1724 4460 6789cecc505f1df9b92f14e313f17909.exe 89 PID 1724 wrote to memory of 2976 1724 CJRqJYXiFF6jGf2AbP16.exe 90 PID 1724 wrote to memory of 2976 1724 CJRqJYXiFF6jGf2AbP16.exe 90 PID 1724 wrote to memory of 2976 1724 CJRqJYXiFF6jGf2AbP16.exe 90 PID 2976 wrote to memory of 1228 2976 System.exe 91 PID 2976 wrote to memory of 1228 2976 System.exe 91 PID 2976 wrote to memory of 1228 2976 System.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\6789cecc505f1df9b92f14e313f17909.exe"C:\Users\Admin\AppData\Local\Temp\6789cecc505f1df9b92f14e313f17909.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460 -
C:\Users\Admin\AppData\Roaming\CJRqJYXiFF6jGf2AbP16.exe"C:\Users\Admin\AppData\Roaming\CJRqJYXiFF6jGf2AbP16.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Users\Admin\AppData\Roaming\System.exe"C:\Users\Admin\AppData\Roaming\System.exe"3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\System.exe" "System.exe" ENABLE4⤵
- Modifies Windows Firewall
PID:1228
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
29KB
MD577f54ad81c4e3267c773d90e6f14feb3
SHA147af82fe19c20b59aef9a4394d41a5b8fc22310b
SHA256d4926fd99c2edf0b5a1a82e0895e6b466370562361507fb9eda6ad82c0026b1f
SHA512806dc86dcbde255e18bac8e45d32a18fabe4d5061fe680add7a7deaf92a67417fb9f436192c509b4f29322f69c1b49215d1db7b1ee76085e3d44f6da04d51bb9