onlylogger | 05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6

General

Target
05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe
Size 324KB
Sample220512-n6fntsdfe2
SHA256 05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6
MD5 5830cf430af8122d01cf361078a6bb93
SHA1 c696f0be9086fc97b757187d203519593a02ce12
SHA512 79a5dd555ec3423911acb491fb8edaed0ac595d2327570521d6c2e8f337c63192e0dcf2ff46161324c763f721a66f25113363c7fbd06aba2ddb5f4a30fdde5a2
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/3496-131-0x0000000004F10000-0x0000000004F56000-memory.dmp	family_onlylogger
behavioral2/memory/3496-132-0x0000000000400000-0x0000000004DCD000-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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.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 9 IoCs

pid	pid_target	Process	procid_target
920	3496	WerFault.exe	81
2760	3496	WerFault.exe	81
2952	3496	WerFault.exe	81
1408	3496	WerFault.exe	81
3904	3496	WerFault.exe	81
4540	3496	WerFault.exe	81
4472	3496	WerFault.exe	81
3288	3496	WerFault.exe	81
4772	3496	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
1460	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1460	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3496 wrote to memory of 4468	3496	05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe	101
PID 3496 wrote to memory of 4468	3496	05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe	101
PID 3496 wrote to memory of 4468	3496	05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe	101
PID 4468 wrote to memory of 1460	4468	cmd.exe	105
PID 4468 wrote to memory of 1460	4468	cmd.exe	105
PID 4468 wrote to memory of 1460	4468	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe
"C:\Users\Admin\AppData\Local\Temp\05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 616
  2⤵
  - Program crash
  PID:920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 636
  2⤵
  - Program crash
  PID:2760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 644
  2⤵
  - Program crash
  PID:2952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 648
  2⤵
  - Program crash
  PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 788
  2⤵
  - Program crash
  PID:3904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 820
  2⤵
  - Program crash
  PID:4540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 1084
  2⤵
  - Program crash
  PID:4472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 1228
  2⤵
  - Program crash
  PID:3288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "05c33a3e8abc524778d307356dc4a540bdf864b307a0f2ecd4a60c72016b9cb6.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 1404
  2⤵
  - Program crash
  PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3496 -ip 3496
1⤵
PID:4200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3496 -ip 3496
1⤵
PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3496 -ip 3496
1⤵
PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3496 -ip 3496
1⤵
PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3496 -ip 3496
1⤵
PID:1880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3496 -ip 3496
1⤵
PID:208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3496 -ip 3496
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3496 -ip 3496
1⤵
PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 3496 -ip 3496
1⤵
PID:844

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/3496-130-0x0000000005188000-0x00000000051B0000-memory.dmp

Download

memory/3496-131-0x0000000004F10000-0x0000000004F56000-memory.dmp

Download

memory/3496-132-0x0000000000400000-0x0000000004DCD000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads