gcleaner | 485cadde1de44b50c205f7019b7f63222af1e779b9a14b9363bd811d6933f80c

Analysis

max time kernel
135s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2023 17:38

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General

Target

354895bd5079cc205b265799b71ec05c.exe
Size

276KB
MD5

354895bd5079cc205b265799b71ec05c
SHA1

1016ac93fad8d1706255e96f7807c1950bd3d78c
SHA256

485cadde1de44b50c205f7019b7f63222af1e779b9a14b9363bd811d6933f80c
SHA512

792fd2aa10633cb5b59ae51b2e124d9e2765f1d830b9f785666ef09683380e765b299fb528d319662dedcc0503914a95e5a30a128c021f20bb3498c047395b8f
SSDEEP

3072:qmEFfQzn7IRveaMP7osVhZTTqadpBtrWAbTJhzoxM7viqOUAX6xJ9n+T6:UFYznoeaMZXbSAp8pz+

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

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

Processes:

354895bd5079cc205b265799b71ec05c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	354895bd5079cc205b265799b71ec05c.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 6 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
2188	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe
376	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe
4780	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe
460	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe
4352	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe
4172	2972	WerFault.exe	354895bd5079cc205b265799b71ec05c.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1692 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1692 taskkill.exe

pid	process
1692	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1692	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

354895bd5079cc205b265799b71ec05c.execmd.exe

description	pid	process	target process
PID 2972 wrote to memory of 536	2972	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 2972 wrote to memory of 536	2972	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 2972 wrote to memory of 536	2972	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 536 wrote to memory of 1692	536	cmd.exe	taskkill.exe
PID 536 wrote to memory of 1692	536	cmd.exe	taskkill.exe
PID 536 wrote to memory of 1692	536	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe
"C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 700
  2⤵
  - Program crash
  PID:2188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 712
  2⤵
  - Program crash
  PID:376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 928
  2⤵
  - Program crash
  PID:4780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 960
  2⤵
  - Program crash
  PID:460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 968
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 972
  2⤵
  - Program crash
  PID:4172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "354895bd5079cc205b265799b71ec05c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:536
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "354895bd5079cc205b265799b71ec05c.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2972 -ip 2972
1⤵
PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 2972 -ip 2972
1⤵
PID:796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2972 -ip 2972
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2972 -ip 2972
1⤵
PID:312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2972 -ip 2972
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2972 -ip 2972
1⤵
PID:1868

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2972-134-0x00000000005A0000-0x00000000005E0000-memory.dmp

Filesize
256KB

Download
memory/2972-135-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download