gcleaner | 3c195593808549d5441dbc38f0df010629889f375c3f5901dff0be8b8bf171f6

General

Target
4b639fa4b53ebb236e0e07395e1e2393.exe
Size 387KB
Sample240531-e9y5xafc7w
SHA256 3c195593808549d5441dbc38f0df010629889f375c3f5901dff0be8b8bf171f6
MD5 4b639fa4b53ebb236e0e07395e1e2393
SHA1 56d0c42784fdf494481a34bdb75cf0eace75859d
SHA512 58af321cd365aa14e32dfe02e753dca6bff14ecdf0ecbc84e9eafc81f33bd9215dc68802ea091c537fd559a3de72cb089d97f3f147bed0af55bd0699e5dcf82d
SSDEEP 6144:hr99V5fXfIOsdExxqzAjY5SxTZXndeTn:V99V5/fdsOxC5SxFnU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90
5.42.64.56
185.172.128.69

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	4b639fa4b53ebb236e0e07395e1e2393.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3876	512	WerFault.exe	80
4524	512	WerFault.exe	80
1444	512	WerFault.exe	80
4432	512	WerFault.exe	80
3936	512	WerFault.exe	80
3652	512	WerFault.exe	80
2080	512	WerFault.exe	80
5012	512	WerFault.exe	80
4192	512	WerFault.exe	80
1152	512	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
1544	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1544	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 512 wrote to memory of 4616	512	4b639fa4b53ebb236e0e07395e1e2393.exe	112
PID 512 wrote to memory of 4616	512	4b639fa4b53ebb236e0e07395e1e2393.exe	112
PID 512 wrote to memory of 4616	512	4b639fa4b53ebb236e0e07395e1e2393.exe	112
PID 4616 wrote to memory of 1544	4616	cmd.exe	116
PID 4616 wrote to memory of 1544	4616	cmd.exe	116
PID 4616 wrote to memory of 1544	4616	cmd.exe	116

C:\Users\Admin\AppData\Local\Temp\4b639fa4b53ebb236e0e07395e1e2393.exe
"C:\Users\Admin\AppData\Local\Temp\4b639fa4b53ebb236e0e07395e1e2393.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 464
  2⤵
  - Program crash
  PID:3876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 768
  2⤵
  - Program crash
  PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 788
  2⤵
  - Program crash
  PID:1444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 808
  2⤵
  - Program crash
  PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 840
  2⤵
  - Program crash
  PID:3936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 928
  2⤵
  - Program crash
  PID:3652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 928
  2⤵
  - Program crash
  PID:2080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 1416
  2⤵
  - Program crash
  PID:5012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 1324
  2⤵
  - Program crash
  PID:4192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4b639fa4b53ebb236e0e07395e1e2393.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4b639fa4b53ebb236e0e07395e1e2393.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4b639fa4b53ebb236e0e07395e1e2393.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 512 -s 1668
  2⤵
  - Program crash
  PID:1152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 512 -ip 512
1⤵
PID:376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 512 -ip 512
1⤵
PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 512 -ip 512
1⤵
PID:2328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 512 -ip 512
1⤵
PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 512 -ip 512
1⤵
PID:5064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 512 -ip 512
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 512 -ip 512
1⤵
PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 512 -ip 512
1⤵
PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 512 -ip 512
1⤵
PID:1228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 512 -ip 512
1⤵
PID:4592

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

advdlc[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\K7TNQP8W\advdlc[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

memory/512-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

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memory/512-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/512-2-0x00000000023F0000-0x000000000242C000-memory.dmp

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memory/512-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/512-15-0x0000000000400000-0x000000000069A000-memory.dmp

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memory/512-19-0x00000000023F0000-0x000000000242C000-memory.dmp

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memory/512-22-0x00000000006D0000-0x00000000007D0000-memory.dmp

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memory/512-24-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/512-34-0x0000000000400000-0x000000000069A000-memory.dmp

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memory/512-36-0x0000000000400000-0x0000000000440000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads