gcleaner | e3bb7d5e0e74dfac43c272516d78431426f9869912cb426f6db70a156c8512fd

General

Target
a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe
Size 321KB
Sample240819-epcfeaxapn
SHA256 e3bb7d5e0e74dfac43c272516d78431426f9869912cb426f6db70a156c8512fd
MD5 a985347669f5a331f844379febdc1e9a
SHA1 f74947124606530474bff0b16d858609f7c8505c
SHA512 c6e1b62fb6067e3beb1f87cec5964c0ddd1e536cbf9b948348921179f9ab4ec35a1c646d6fe048afd08e933da02bb6c563efbae10ebe0ca04cc72d3dc5d909b1
SSDEEP 6144:fZeNLJ49BUMG2TRzEYq0Ql3xf0YnOznSZeQRpxyf+t:kW9B3rl5Ql3xULSFft
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

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 5 IoCs

resource	yara_rule
behavioral2/memory/3332-2-0x0000000002150000-0x0000000002196000-memory.dmp	family_onlylogger
behavioral2/memory/3332-3-0x0000000000400000-0x0000000000449000-memory.dmp	family_onlylogger
behavioral2/memory/3332-5-0x0000000000400000-0x00000000004F4000-memory.dmp	family_onlylogger
behavioral2/memory/3332-7-0x0000000000400000-0x0000000000449000-memory.dmp	family_onlylogger
behavioral2/memory/3332-6-0x0000000002150000-0x0000000002196000-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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	a985347669f5a331f844379febdc1e9a_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
2420	3332	WerFault.exe	83
2524	3332	WerFault.exe	83
1360	3332	WerFault.exe	83
1576	3332	WerFault.exe	83
1036	3332	WerFault.exe	83
2116	3332	WerFault.exe	83
2204	3332	WerFault.exe	83
3204	3332	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	a985347669f5a331f844379febdc1e9a_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
2364	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3332 wrote to memory of 1448	3332	a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe	108
PID 3332 wrote to memory of 1448	3332	a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe	108
PID 3332 wrote to memory of 1448	3332	a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe	108
PID 1448 wrote to memory of 2364	1448	cmd.exe	112
PID 1448 wrote to memory of 2364	1448	cmd.exe	112
PID 1448 wrote to memory of 2364	1448	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 612
  2⤵
  - Program crash
  PID:2420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 648
  2⤵
  - Program crash
  PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 628
  2⤵
  - Program crash
  PID:1360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 624
  2⤵
  - Program crash
  PID:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 812
  2⤵
  - Program crash
  PID:1036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 1216
  2⤵
  - Program crash
  PID:2116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 1032
  2⤵
  - Program crash
  PID:2204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "a985347669f5a331f844379febdc1e9a_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 1104
  2⤵
  - Program crash
  PID:3204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3332 -ip 3332
1⤵
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3332 -ip 3332
1⤵
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3332 -ip 3332
1⤵
PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3332 -ip 3332
1⤵
PID:1456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 3332 -ip 3332
1⤵
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3332 -ip 3332
1⤵
PID:680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3332 -ip 3332
1⤵
PID:4312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3332 -ip 3332
1⤵
PID:4424

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

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Downloads

memory/3332-1-0x0000000000750000-0x0000000000850000-memory.dmp

Download

memory/3332-2-0x0000000002150000-0x0000000002196000-memory.dmp

Download

memory/3332-3-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/3332-4-0x0000000000750000-0x0000000000850000-memory.dmp

Download

memory/3332-5-0x0000000000400000-0x00000000004F4000-memory.dmp

Download

memory/3332-7-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/3332-6-0x0000000002150000-0x0000000002196000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads