onlylogger | 8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0

General

Target
8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe
Size 323KB
Sample220511-c56m3sgfal
SHA256 8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0
MD5 d83653278606c5f648c78ad1b6555c64
SHA1 8446eca4631b6153560ad382f63274649e7426b3
SHA512 3ffdb5d5102db1d4e7b4c4e4f3cdb095dfa446cec8c22fc1707e3983b3bd39d85d33ff48d1a163a69ab81c3598d31188c1aee612b6cb1ec69016f768debce89e
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/4628-131-0x0000000004F10000-0x0000000004F56000-memory.dmp	family_onlylogger
behavioral2/memory/4628-132-0x0000000000400000-0x0000000004DCD000-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	8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.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
4928	4628	WerFault.exe	84
740	4628	WerFault.exe	84
4852	4628	WerFault.exe	84
3152	4628	WerFault.exe	84
4632	4628	WerFault.exe	84
3732	4628	WerFault.exe	84
4612	4628	WerFault.exe	84
548	4628	WerFault.exe	84

Kills process with taskkill 1 IoCs

evasion

pid	Process
1692	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 864	4628	8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe	106
PID 4628 wrote to memory of 864	4628	8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe	106
PID 4628 wrote to memory of 864	4628	8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe	106
PID 864 wrote to memory of 1692	864	cmd.exe	110
PID 864 wrote to memory of 1692	864	cmd.exe	110
PID 864 wrote to memory of 1692	864	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe
"C:\Users\Admin\AppData\Local\Temp\8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 612
  2⤵
  - Program crash
  PID:4928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 632
  2⤵
  - Program crash
  PID:740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 736
  2⤵
  - Program crash
  PID:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 792
  2⤵
  - Program crash
  PID:3152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1088
  2⤵
  - Program crash
  PID:4632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1160
  2⤵
  - Program crash
  PID:3732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1216
  2⤵
  - Program crash
  PID:4612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:864
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8a247a04783a7f2c1bda188afc2193a523001e698543fc3175375767833f66a0.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1112
  2⤵
  - Program crash
  PID:548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4628 -ip 4628
1⤵
PID:348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4628 -ip 4628
1⤵
PID:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4628 -ip 4628
1⤵
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4628 -ip 4628
1⤵
PID:3740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4628 -ip 4628
1⤵
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4628 -ip 4628
1⤵
PID:632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4628 -ip 4628
1⤵
PID:2960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 4628 -ip 4628
1⤵
PID:4784

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
1⤵
PID:4236

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/4628-130-0x000000000511E000-0x0000000005146000-memory.dmp

Download

memory/4628-131-0x0000000004F10000-0x0000000004F56000-memory.dmp

Download

memory/4628-132-0x0000000000400000-0x0000000004DCD000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads