gcleaner | 99c174299dbb2e0fc5a2fa4bab7bfbc95b7ce2c510fc043a5a4a952a61d28ffe

General

Target
77c7fe4a6525a6e403308d4c0cb34fed.exe
Size 248KB
Sample230214-t4tessef73
SHA256 99c174299dbb2e0fc5a2fa4bab7bfbc95b7ce2c510fc043a5a4a952a61d28ffe
MD5 77c7fe4a6525a6e403308d4c0cb34fed
SHA1 ff323b1849877b5b567e12ddaedd02ca2dc82a5b
SHA512 5916dd103f32bf8ae4b03213bfa5b1e23809dae525379dfd72005b87c4472e4bc54a62e9419decc703f88839ea22c3ff92532f373fe3d91825d68524da247587
SSDEEP 3072:6lZOL4sT5oF2anGSNuiUbiUl0fyfbZOjWCJAfr249TEVVjlI0gqpR+x4wROgEBZ:ZL4sKHGoFUq6AJufr19TEO0gyRC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56
45.12.253.72
45.12.253.98
45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	77c7fe4a6525a6e403308d4c0cb34fed.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 10 IoCs

pid	pid_target	Process	procid_target
4348	368	WerFault.exe	81
3220	368	WerFault.exe	81
2656	368	WerFault.exe	81
4524	368	WerFault.exe	81
4456	368	WerFault.exe	81
4116	368	WerFault.exe	81
5040	368	WerFault.exe	81
4648	368	WerFault.exe	81
3372	368	WerFault.exe	81
3040	368	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
3180	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3180	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 368 wrote to memory of 2892	368	77c7fe4a6525a6e403308d4c0cb34fed.exe	100
PID 368 wrote to memory of 2892	368	77c7fe4a6525a6e403308d4c0cb34fed.exe	100
PID 368 wrote to memory of 2892	368	77c7fe4a6525a6e403308d4c0cb34fed.exe	100
PID 2892 wrote to memory of 3180	2892	cmd.exe	104
PID 2892 wrote to memory of 3180	2892	cmd.exe	104
PID 2892 wrote to memory of 3180	2892	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\77c7fe4a6525a6e403308d4c0cb34fed.exe
"C:\Users\Admin\AppData\Local\Temp\77c7fe4a6525a6e403308d4c0cb34fed.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 460
  2⤵
  - Program crash
  PID:4348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 764
  2⤵
  - Program crash
  PID:3220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 784
  2⤵
  - Program crash
  PID:2656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 784
  2⤵
  - Program crash
  PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 808
  2⤵
  - Program crash
  PID:4456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 928
  2⤵
  - Program crash
  PID:4116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 1004
  2⤵
  - Program crash
  PID:5040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 928
  2⤵
  - Program crash
  PID:4648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 1364
  2⤵
  - Program crash
  PID:3372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "77c7fe4a6525a6e403308d4c0cb34fed.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\77c7fe4a6525a6e403308d4c0cb34fed.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "77c7fe4a6525a6e403308d4c0cb34fed.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 368 -s 520
  2⤵
  - Program crash
  PID:3040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 368 -ip 368
1⤵
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 368 -ip 368
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 368 -ip 368
1⤵
PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 368 -ip 368
1⤵
PID:2560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 368 -ip 368
1⤵
PID:2252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 368 -ip 368
1⤵
PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 368 -ip 368
1⤵
PID:1536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 368 -ip 368
1⤵
PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 368 -ip 368
1⤵
PID:2944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 368 -ip 368
1⤵
PID:4948

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

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Downloads

memory/368-132-0x00000000009FE000-0x0000000000A24000-memory.dmp

Download

memory/368-133-0x00000000024C0000-0x0000000002500000-memory.dmp

Download

memory/368-134-0x0000000000400000-0x000000000075B000-memory.dmp

Download

memory/368-137-0x00000000009FE000-0x0000000000A24000-memory.dmp

Download

memory/368-138-0x0000000000400000-0x000000000075B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads