0f9e71d60e3069524b211280f87d329ea279c0b59b08826a14eec3cf97f9c839

Analysis

max time kernel
144s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2022, 07:28

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General

Target
c3a33dd6fdb4f05ba0ab01cdb5485336.exe
Size 1.0MB
Sample220818-janx4sbbep
SHA256 0f9e71d60e3069524b211280f87d329ea279c0b59b08826a14eec3cf97f9c839
MD5 c3a33dd6fdb4f05ba0ab01cdb5485336
SHA1 3e168f936663d0d92aa397c48265a1e908d1fe55
SHA512 0e6acfaeea3b78dbda39771e54f4e88b5c422577cba120133965ec2f2d897991dabce6484a4284ed541dea545aabeb8a90144624fd504e0d9ac9d5fe6516f23a
MD5 SHA1 SHA512

Score

7^/10

persistence

Malware Config

Signatures

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	c3a33dd6fdb4f05ba0ab01cdb5485336.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Urfddt = "\"C:\\Users\\Admin\\AppData\\Roaming\\Gpuocq\\Urfddt.exe\""	c3a33dd6fdb4f05ba0ab01cdb5485336.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1228 set thread context of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86

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 12 IoCs

pid	Process
2148	powershell.exe
2148	powershell.exe
1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe
1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe
4744	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	4744	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2148	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	84
PID 1228 wrote to memory of 2148	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	84
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86
PID 1228 wrote to memory of 4744	1228	c3a33dd6fdb4f05ba0ab01cdb5485336.exe	86

C:\Users\Admin\AppData\Local\Temp\c3a33dd6fdb4f05ba0ab01cdb5485336.exe
"C:\Users\Admin\AppData\Local\Temp\c3a33dd6fdb4f05ba0ab01cdb5485336.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwADsAIABTAGUAdAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAJwBDADoAXAAnAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1228-132-0x0000022723E00000-0x0000022723F0C000-memory.dmp

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memory/1228-133-0x0000022725B40000-0x0000022725B62000-memory.dmp

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memory/1228-134-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/1228-137-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/1228-141-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/2148-136-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/2148-138-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/4744-139-0x0000000140000000-0x000000014007A000-memory.dmp

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memory/4744-142-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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memory/4744-143-0x00007FFF7B380000-0x00007FFF7BE41000-memory.dmp

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