gcleaner | bac663f2a8d3a67131c6098f1864cbdd03eacee21b66a20591980f01456cab30

General

Target

325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe
Size

249KB
MD5

325ad9cb87d12330e7fc94507282f799
SHA1

7e34a218700dcfc430a631cf64c72e9f0d2d39f7
SHA256

bac663f2a8d3a67131c6098f1864cbdd03eacee21b66a20591980f01456cab30
SHA512

47e75f47147dc919e808f70182decee3c3ee25391ad4a9672dc4fac88dbc80e684e53beba9afdb7946b019a6a623ab1f6012cba9265a178da52724cfa333a5e4
SSDEEP

3072:T/rqmkcOfBKfyJHlfDrCz4lZv3tXzBJTUJhpxyDXcF04yp0X57+x:jdKwfyrDi4FzBJQtc0y2d+

Score

10^/10

gcleaner onlylogger loader

Malware Config

Extracted

Family

gcleaner

C2

gc-partners.in

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger payload 4 IoCs

resource	yara_rule
behavioral2/memory/1928-2-0x0000000000FA0000-0x0000000000FE6000-memory.dmp	family_onlylogger
behavioral2/memory/1928-3-0x0000000000400000-0x0000000000449000-memory.dmp	family_onlylogger
behavioral2/memory/1928-5-0x0000000000400000-0x0000000000449000-memory.dmp	family_onlylogger
behavioral2/memory/1928-4-0x0000000000400000-0x0000000000F9C000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
436	1928	WerFault.exe	81
1716	1928	WerFault.exe	81
2192	1928	WerFault.exe	81
4048	1928	WerFault.exe	81
2984	1928	WerFault.exe	81
3764	1928	WerFault.exe	81
2668	1928	WerFault.exe	81
2768	1928	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
4332	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4332	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 1268	1928	325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe	103
PID 1928 wrote to memory of 1268	1928	325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe	103
PID 1928 wrote to memory of 1268	1928	325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe	103
PID 1268 wrote to memory of 4332	1268	cmd.exe	107
PID 1268 wrote to memory of 4332	1268	cmd.exe	107
PID 1268 wrote to memory of 4332	1268	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 612
  2⤵
  - Program crash
  PID:436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 648
  2⤵
  - Program crash
  PID:1716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 744
  2⤵
  - Program crash
  PID:2192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 784
  2⤵
  - Program crash
  PID:4048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 776
  2⤵
  - Program crash
  PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 1076
  2⤵
  - Program crash
  PID:3764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 1216
  2⤵
  - Program crash
  PID:2668
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1268
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "325ad9cb87d12330e7fc94507282f799_JaffaCakes118.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 1260
  2⤵
  - Program crash
  PID:2768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1928 -ip 1928
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1928 -ip 1928
1⤵
PID:320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1928 -ip 1928
1⤵
PID:2924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1928 -ip 1928
1⤵
PID:1592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1928 -ip 1928
1⤵
PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1928 -ip 1928
1⤵
PID:2652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1928 -ip 1928
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1928 -ip 1928
1⤵
PID:4604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

memory/1928-1-0x00000000011D0000-0x00000000012D0000-memory.dmp

Filesize
1024KB

Download
memory/1928-2-0x0000000000FA0000-0x0000000000FE6000-memory.dmp

Filesize
280KB

Download
memory/1928-3-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1928-5-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1928-4-0x0000000000400000-0x0000000000F9C000-memory.dmp

Filesize
11.6MB

Download

Analysis

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