onlylogger | 3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62

General

Target
3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe
Size 435KB
Sample220703-h847bacdc6
SHA256 3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62
MD5 c1fbe1e2fce911062f0d6b933e8689c3
SHA1 9d21b8582bbbecea6a67ce40906a975d99504b03
SHA512 ba46705dfca8cb75707ca07b87f876a1217932522a7c14a69ccdc7822940aa8d9abdeeefba8517044d133b55041ecd8771c69c790b5ea2bc25e32fc1a1c69e3a
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/1820-131-0x0000000000970000-0x00000000009B9000-memory.dmp	family_onlylogger
behavioral2/memory/1820-132-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger
behavioral2/memory/1820-135-0x0000000000400000-0x000000000089C000-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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.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 8 IoCs

pid	pid_target	Process	procid_target
3452	1820	WerFault.exe	77
4208	1820	WerFault.exe	77
2040	1820	WerFault.exe	77
3820	1820	WerFault.exe	77
388	1820	WerFault.exe	77
960	1820	WerFault.exe	77
1996	1820	WerFault.exe	77
4512	1820	WerFault.exe	77

Kills process with taskkill 1 IoCs

evasion

pid	Process
4508	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 4008	1820	3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe	94
PID 1820 wrote to memory of 4008	1820	3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe	94
PID 1820 wrote to memory of 4008	1820	3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe	94
PID 4008 wrote to memory of 4508	4008	cmd.exe	98
PID 4008 wrote to memory of 4508	4008	cmd.exe	98
PID 4008 wrote to memory of 4508	4008	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe
"C:\Users\Admin\AppData\Local\Temp\3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 688
  2⤵
  - Program crash
  PID:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 764
  2⤵
  - Program crash
  PID:4208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 760
  2⤵
  - Program crash
  PID:2040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 928
  2⤵
  - Program crash
  PID:3820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 944
  2⤵
  - Program crash
  PID:388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 964
  2⤵
  - Program crash
  PID:960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 952
  2⤵
  - Program crash
  PID:1996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3c74459ec6c11dd5a32d154b27eed6b90c1359edd2edb9f662a5bf9f0e7faf62.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 1132
  2⤵
  - Program crash
  PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1820 -ip 1820
1⤵
PID:2564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1820 -ip 1820
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1820 -ip 1820
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1820 -ip 1820
1⤵
PID:1880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1820 -ip 1820
1⤵
PID:1716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1820 -ip 1820
1⤵
PID:2164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1820 -ip 1820
1⤵
PID:2112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 1820 -ip 1820
1⤵
PID:4532

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/1820-130-0x0000000000BD3000-0x0000000000BFC000-memory.dmp

Download

memory/1820-131-0x0000000000970000-0x00000000009B9000-memory.dmp

Download

memory/1820-132-0x0000000000400000-0x000000000089C000-memory.dmp

Download

memory/1820-135-0x0000000000400000-0x000000000089C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads