onlylogger | 3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd

General

Target
3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe
Size 434KB
Sample220703-ee4f5sgah2
SHA256 3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd
MD5 660f957f13470d2f9c34713c192920b2
SHA1 07998033267d6a0c8cc6a562c78d9caadaafa918
SHA512 7c09911d02ad0d8e05615b80cf228c186b319177beea26e899d5e054f2f35c42187f37b7a5a3d567e3663505aae39f1de274b3be86b1ccf22df2df168ac162cd
MD5 SHA1 SHA512

Score

10^/10

onlylogger loader

Malware Config

Signatures

OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4860-131-0x00000000008A0000-0x00000000008E9000-memory.dmp	family_onlylogger
behavioral2/memory/4860-132-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger
behavioral2/memory/4860-135-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger

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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
3548	4860	WerFault.exe	80
4908	4860	WerFault.exe	80
2040	4860	WerFault.exe	80
4392	4860	WerFault.exe	80
5080	4860	WerFault.exe	80
4360	4860	WerFault.exe	80
1604	4860	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3696	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3696	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 3940	4860	3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe	94
PID 4860 wrote to memory of 3940	4860	3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe	94
PID 4860 wrote to memory of 3940	4860	3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe	94
PID 3940 wrote to memory of 3696	3940	cmd.exe	98
PID 3940 wrote to memory of 3696	3940	cmd.exe	98
PID 3940 wrote to memory of 3696	3940	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe
"C:\Users\Admin\AppData\Local\Temp\3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 736
  2⤵
  - Program crash
  PID:3548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 792
  2⤵
  - Program crash
  PID:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 724
  2⤵
  - Program crash
  PID:2040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 740
  2⤵
  - Program crash
  PID:4392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 740
  2⤵
  - Program crash
  PID:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 948
  2⤵
  - Program crash
  PID:4360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3940
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1108
  2⤵
  - Program crash
  PID:1604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4860 -ip 4860
1⤵
PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4860 -ip 4860
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4860 -ip 4860
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4860 -ip 4860
1⤵
PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4860 -ip 4860
1⤵
PID:364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4860 -ip 4860
1⤵
PID:1272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4860 -ip 4860
1⤵
PID:2972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

memory/4860-131-0x00000000008A0000-0x00000000008E9000-memory.dmp

Download

memory/4860-130-0x0000000000A03000-0x0000000000A2C000-memory.dmp

Download

memory/4860-132-0x0000000000400000-0x000000000089C000-memory.dmp

Download

memory/4860-135-0x0000000000400000-0x000000000089C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads