gcleaner | 1ea473c1d73b6772f66dd62e82257db13335ff45f94f1bedc024f6e99778abea

General

Target

77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe
Size

338KB
MD5

77f4bbe1f7bd124fcb15c3416d1e8fcf
SHA1

ef9a68db31683da6c4ea0dadebcb48d7817da578
SHA256

1ea473c1d73b6772f66dd62e82257db13335ff45f94f1bedc024f6e99778abea
SHA512

4a87c1cd1423c1e7454d07d9ed13212beb165bcfd9107fc79783fe1e6ae33058b8bc4dbbfe20cbd4dff822dcd395b6b85d57c86b9e2cd286118c1b825f0bfb65
SSDEEP

6144:FdUL9iYuNEpiCOEig7wD+ZJyAucxI6D4Q1c4KDV3N/9n6QipcoGg7dg:FKpbuezqg7YMHucxI6ONDVJ2m47

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-page.biz

194.145.227.161

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/3988-2-0x0000000000D20000-0x0000000000D68000-memory.dmp	family_onlylogger
behavioral2/memory/3988-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/3988-6-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/3988-5-0x0000000000D20000-0x0000000000D68000-memory.dmp	family_onlylogger
behavioral2/memory/3988-4-0x0000000000400000-0x0000000000884000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.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
2496	3988	WerFault.exe	83
2136	3988	WerFault.exe	83
3980	3988	WerFault.exe	83
4084	3988	WerFault.exe	83
3648	3988	WerFault.exe	83
4028	3988	WerFault.exe	83
3128	3988	WerFault.exe	83

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	77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.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
4412	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4412	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 2972	3988	77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe	108
PID 3988 wrote to memory of 2972	3988	77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe	108
PID 3988 wrote to memory of 2972	3988	77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe	108
PID 2972 wrote to memory of 4412	2972	cmd.exe	112
PID 2972 wrote to memory of 4412	2972	cmd.exe	112
PID 2972 wrote to memory of 4412	2972	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 692
  2⤵
  - Program crash
  PID:2496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 792
  2⤵
  - Program crash
  PID:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 920
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 944
  2⤵
  - Program crash
  PID:4084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 944
  2⤵
  - Program crash
  PID:3648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 984
  2⤵
  - Program crash
  PID:4028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "77f4bbe1f7bd124fcb15c3416d1e8fcf_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 1068
  2⤵
  - Program crash
  PID:3128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3988 -ip 3988
1⤵
PID:2436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3988 -ip 3988
1⤵
PID:1092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3988 -ip 3988
1⤵
PID:1544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3988 -ip 3988
1⤵
PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3988 -ip 3988
1⤵
PID:1072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3988 -ip 3988
1⤵
PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3988 -ip 3988
1⤵
PID:3584

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/3988-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/3988-2-0x0000000000D20000-0x0000000000D68000-memory.dmp

Filesize
288KB

Download
memory/3988-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3988-6-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3988-5-0x0000000000D20000-0x0000000000D68000-memory.dmp

Filesize
288KB

Download
memory/3988-4-0x0000000000400000-0x0000000000884000-memory.dmp

Filesize
4.5MB

Download

Analysis

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