onlylogger | be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0

General

Target
be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe
Size 405KB
Sample220501-3lt32sbccm
SHA256 be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0
MD5 fef08fe03292543a62f7f28103180eeb
SHA1 3c7af0353f0f93a5b9dfcf6198c325ff4e27b2d0
SHA512 fb6506d15e635231c703a3dad86f35d162af4d9531091b1939acb3deb1ae13d7f9c2c9edd75f2c11a21ecbfaf713817a4f4412217d09f5e8620cf319640543d4
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 2 IoCs

resource	yara_rule
behavioral2/memory/3420-131-0x0000000002250000-0x0000000002296000-memory.dmp	family_onlylogger
behavioral2/memory/3420-132-0x0000000000400000-0x00000000004A4000-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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.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
4960	3420	WerFault.exe	79
4292	3420	WerFault.exe	79
2768	3420	WerFault.exe	79
684	3420	WerFault.exe	79
3240	3420	WerFault.exe	79
4652	3420	WerFault.exe	79
4916	3420	WerFault.exe	79
4428	3420	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
4396	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4396	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 4236	3420	be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe	95
PID 3420 wrote to memory of 4236	3420	be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe	95
PID 3420 wrote to memory of 4236	3420	be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe	95
PID 4236 wrote to memory of 4396	4236	cmd.exe	99
PID 4236 wrote to memory of 4396	4236	cmd.exe	99
PID 4236 wrote to memory of 4396	4236	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe
"C:\Users\Admin\AppData\Local\Temp\be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 628
  2⤵
  - Program crash
  PID:4960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 636
  2⤵
  - Program crash
  PID:4292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 484
  2⤵
  - Program crash
  PID:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 636
  2⤵
  - Program crash
  PID:684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 852
  2⤵
  - Program crash
  PID:3240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1100
  2⤵
  - Program crash
  PID:4652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1220
  2⤵
  - Program crash
  PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4236
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "be33bd7f3956c2a5fc4ed13b7f6cb2df71b77fa67209b5e73c831efbf728caf0.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1392
  2⤵
  - Program crash
  PID:4428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3420 -ip 3420
1⤵
PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3420 -ip 3420
1⤵
PID:4664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3420 -ip 3420
1⤵
PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3420 -ip 3420
1⤵
PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 3420 -ip 3420
1⤵
PID:4368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3420 -ip 3420
1⤵
PID:4748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3420 -ip 3420
1⤵
PID:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 3420 -ip 3420
1⤵
PID:5084

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3420-131-0x0000000002250000-0x0000000002296000-memory.dmp

Download

memory/3420-132-0x0000000000400000-0x00000000004A4000-memory.dmp

Download

memory/3420-130-0x000000000073D000-0x0000000000765000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads