ea4eb55ebf7e14785d300fbb24be2bdea633c4b78b69fe5fccf77a16cab5cccd

General

Target
Catelog.jpg.exe
Size 123KB
Sample221001-2jfl7sbegn
SHA256 d954de23f8e04cff445b91436fdaf60b05c18e115c3dda8afce8460d72fb1fa7
MD5 458a2379358ae7cdd5a47059277338ca
SHA1 c3753cfa681d226b772a3ab6bc462a5c29791fa0
SHA512 fe182750f864b963f5ca970013bf5003dd108c7e7d69c981d9b8779b8276727b464fd5a1978dffd68e9e52e809bf7ce23206114d58f6aba3d87d4e8b5d768705
SSDEEP 3072:wJQ8sYDCBvQTYMGWdQUkv2Gc1eGktXENiTRWnTuX8Wr:yERqTfGDHv+DvoTROTu
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2908	lsass.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Catelog.jpg.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe	cvtres.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XGdES9N8RW = "C:\\Users\\Admin\\AppData\\Roaming\\dGNIWZiH\\seb2plM.exe.lnk"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4956 set thread context of 4596	4956	Catelog.jpg.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4956	Catelog.jpg.exe
4956	Catelog.jpg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	Catelog.jpg.exe
Token: SeDebugPrivilege	4596	cvtres.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 4340	4956	Catelog.jpg.exe	90
PID 4956 wrote to memory of 4340	4956	Catelog.jpg.exe	90
PID 4956 wrote to memory of 4340	4956	Catelog.jpg.exe	90
PID 4340 wrote to memory of 4212	4340	cmd.exe	92
PID 4340 wrote to memory of 4212	4340	cmd.exe	92
PID 4340 wrote to memory of 4212	4340	cmd.exe	92
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4956 wrote to memory of 4596	4956	Catelog.jpg.exe	93
PID 4596 wrote to memory of 2908	4596	cvtres.exe	94
PID 4596 wrote to memory of 2908	4596	cvtres.exe	94
PID 4596 wrote to memory of 2908	4596	cvtres.exe	94

C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe
"C:\Users\Admin\AppData\Local\Temp\Catelog.jpg.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4340
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "XGdES9N8RW" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\dGNIWZiH\seb2plM.exe.lnk"
    3⤵
    - Adds Run key to start application
    PID:4212
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe"
  2⤵
  - Drops startup file
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4596
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe"
    3⤵
    - Executes dropped EXE
    PID:2908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

lsass.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
Size 34KB
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0
SSDEEP 768:Paq4bp49YK+2Cza0pS6icHmMl9CvwOElkn3yKdn5y85p3:ud4+KTMVJHmMsEBKdn5vj
MD5 SHA1 SHA512 SSDEEP

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lsass.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lsass.exe
Size 34KB
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0
SSDEEP 768:Paq4bp49YK+2Cza0pS6icHmMl9CvwOElkn3yKdn5y85p3:ud4+KTMVJHmMsEBKdn5vj
MD5 SHA1 SHA512 SSDEEP

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memory/4596-137-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/4596-141-0x0000000000400000-0x0000000000419000-memory.dmp

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memory/4956-132-0x0000000074850000-0x0000000074E01000-memory.dmp

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memory/4956-133-0x0000000074850000-0x0000000074E01000-memory.dmp

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memory/4956-139-0x0000000074850000-0x0000000074E01000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads