gcleaner | 7b5d5d1ce731da4dad7785b72aa7f24a62b2a9cb202c824ca6d3aeb8492d7aab

General

Target

JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
Size

444KB
MD5

561a8be32d127d240913bf8f7bf45aba
SHA1

6e8a5656a52176b39a1e0370514cfdfeddbc6910
SHA256

7b5d5d1ce731da4dad7785b72aa7f24a62b2a9cb202c824ca6d3aeb8492d7aab
SHA512

bcbc8d87ba9360ef24be67ba18156a3ae209fd01d1315c6d43473720601bed544200850d886e76b0f53d4270dabc7149c5d5ba21d8b9ed7024998b20dbfffbf3
SSDEEP

12288:blvgaJnWq36kMw03CPctkuGhAjeZMYJgiIUa:bnJWq36kMTffjUMYmn

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-gb.biz

45.9.20.13

Signatures

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

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/4924-2-0x0000000000A00000-0x0000000000A49000-memory.dmp	family_onlylogger
behavioral2/memory/4924-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4924-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4924-5-0x0000000000A00000-0x0000000000A49000-memory.dmp	family_onlylogger
behavioral2/memory/4924-4-0x0000000000400000-0x000000000089E000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
4004	4924	WerFault.exe	82
4960	4924	WerFault.exe	82
5004	4924	WerFault.exe	82
2804	4924	WerFault.exe	82
4256	4924	WerFault.exe	82
2368	4924	WerFault.exe	82
4468	4924	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
5076	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 3108	4924	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	96
PID 4924 wrote to memory of 3108	4924	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	96
PID 4924 wrote to memory of 3108	4924	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	96
PID 3108 wrote to memory of 5076	3108	cmd.exe	99
PID 3108 wrote to memory of 5076	3108	cmd.exe	99
PID 3108 wrote to memory of 5076	3108	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 708
  2⤵
  - Program crash
  PID:4004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 784
  2⤵
  - Program crash
  PID:4960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 792
  2⤵
  - Program crash
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 916
  2⤵
  - Program crash
  PID:2804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 916
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 728
  2⤵
  - Program crash
  PID:2368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3108
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 732
  2⤵
  - Program crash
  PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4924 -ip 4924
1⤵
PID:2276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4924 -ip 4924
1⤵
PID:1952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4924 -ip 4924
1⤵
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4924 -ip 4924
1⤵
PID:2992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4924 -ip 4924
1⤵
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4924 -ip 4924
1⤵
PID:3200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4924 -ip 4924
1⤵
PID:3468

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4924-2-0x0000000000A00000-0x0000000000A49000-memory.dmp

Filesize
292KB

Download
memory/4924-1-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/4924-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4924-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4924-5-0x0000000000A00000-0x0000000000A49000-memory.dmp

Filesize
292KB

Download
memory/4924-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download

Analysis

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