gcleaner | 81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4

General

Target
81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
Size 317KB
Sample240526-2c1c2aec8x
SHA256 81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4
MD5 300ac88cb620c7f146cd5f8304512f8e
SHA1 443e0dc509a77c933fa066fc3d490800416c035c
SHA512 8dd90d5a7161cdae6414b8eda964228711d65d3fd45abbf3226ffeed8bfcfaa74b63d0281f8970606d0770e7c5dac66a90f0f838185a6cdcef262b1148ce9911
SSDEEP 6144:dxTINo/Suhyu3XRAgLhXVfR5ODBFKB11IOet7LWT:nIOSuhyuaehX6F81ya
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
3040	1580	WerFault.exe	78
4060	1580	WerFault.exe	78
3144	1580	WerFault.exe	78
1688	1580	WerFault.exe	78
4920	1580	WerFault.exe	78
4848	1580	WerFault.exe	78
2016	1580	WerFault.exe	78
4064	1580	WerFault.exe	78
892	1580	WerFault.exe	78
1656	1580	WerFault.exe	78
2208	1580	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
904	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	100
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	100
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	100
PID 5024 wrote to memory of 904	5024	cmd.exe	104
PID 5024 wrote to memory of 904	5024	cmd.exe	104
PID 5024 wrote to memory of 904	5024	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
"C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 480
  2⤵
  - Program crash
  PID:3040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 484
  2⤵
  - Program crash
  PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 780
  2⤵
  - Program crash
  PID:3144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 800
  2⤵
  - Program crash
  PID:1688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 836
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 864
  2⤵
  - Program crash
  PID:4848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 984
  2⤵
  - Program crash
  PID:2016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 992
  2⤵
  - Program crash
  PID:4064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1428
  2⤵
  - Program crash
  PID:892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1672
  2⤵
  - Program crash
  PID:1656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1584
  2⤵
  - Program crash
  PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1580 -ip 1580
1⤵
PID:4164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1580 -ip 1580
1⤵
PID:4304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1580 -ip 1580
1⤵
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1580 -ip 1580
1⤵
PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1580 -ip 1580
1⤵
PID:976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1580 -ip 1580
1⤵
PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1580 -ip 1580
1⤵
PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1580 -ip 1580
1⤵
PID:2376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1580 -ip 1580
1⤵
PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1580 -ip 1580
1⤵
PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1580 -ip 1580
1⤵
PID:784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\VZQAW3IB\advdlc[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

memory/1580-1-0x0000000002FF0000-0x00000000030F0000-memory.dmp

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memory/1580-2-0x00000000049D0000-0x0000000004A0C000-memory.dmp

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memory/1580-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1580-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/1580-15-0x0000000000400000-0x0000000002CAD000-memory.dmp

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memory/1580-22-0x0000000002FF0000-0x00000000030F0000-memory.dmp

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memory/1580-23-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1580-33-0x0000000000400000-0x0000000002CAD000-memory.dmp

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memory/1580-35-0x0000000000400000-0x0000000000440000-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