gcleaner | 55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae

General

Target
55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe
Size 350KB
Sample240529-p16hqsff65
SHA256 55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae
MD5 914e64cc166a58194817c112a6919c52
SHA1 ee00902c2e22797c3d08c237a6fe350c5a142031
SHA512 2b896d95baa3d4ae9ab52ab03ec81b602b54debdae9789e8ed3e0d91d3f336a49d293df5637438c6ea7094af83aef45765b970a29de7464605d62decab0218a4
SSDEEP 6144:E8i8e6PhdPBQ5WtErlFdlivZpQjrBIviyWK28numh:PHeYe5WelDoC1a
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 10 IoCs

pid	pid_target	Process	procid_target
3124	1000	WerFault.exe	76
1256	1000	WerFault.exe	76
3056	1000	WerFault.exe	76
3436	1000	WerFault.exe	76
3668	1000	WerFault.exe	76
1128	1000	WerFault.exe	76
1308	1000	WerFault.exe	76
3264	1000	WerFault.exe	76
1152	1000	WerFault.exe	76
4420	1000	WerFault.exe	76

Kills process with taskkill 1 IoCs

evasion

pid	Process
3552	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3552	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 1052	1000	55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe	96
PID 1000 wrote to memory of 1052	1000	55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe	96
PID 1000 wrote to memory of 1052	1000	55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe	96
PID 1052 wrote to memory of 3552	1052	cmd.exe	101
PID 1052 wrote to memory of 3552	1052	cmd.exe	101
PID 1052 wrote to memory of 3552	1052	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe
"C:\Users\Admin\AppData\Local\Temp\55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 476
  2⤵
  - Program crash
  PID:3124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 796
  2⤵
  - Program crash
  PID:1256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 816
  2⤵
  - Program crash
  PID:3056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 848
  2⤵
  - Program crash
  PID:3436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 868
  2⤵
  - Program crash
  PID:3668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 1004
  2⤵
  - Program crash
  PID:1128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 1008
  2⤵
  - Program crash
  PID:1308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 1012
  2⤵
  - Program crash
  PID:3264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 1624
  2⤵
  - Program crash
  PID:1152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "55bfc4f6664eeab47ac132a9bebc81232c64ce420e44e1192cff4fdcacc91cae.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 528
  2⤵
  - Program crash
  PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1000 -ip 1000
1⤵
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1000 -ip 1000
1⤵
PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1000 -ip 1000
1⤵
PID:4644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1000 -ip 1000
1⤵
PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1000 -ip 1000
1⤵
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1000 -ip 1000
1⤵
PID:4672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1000 -ip 1000
1⤵
PID:2416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1000 -ip 1000
1⤵
PID:2776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1000 -ip 1000
1⤵
PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1000 -ip 1000
1⤵
PID:1480

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

Submit Download

memory/1000-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1000-2-0x0000000003CE0000-0x0000000003D1C000-memory.dmp

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memory/1000-1-0x0000000002240000-0x0000000002340000-memory.dmp

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memory/1000-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/1000-14-0x0000000000400000-0x0000000001FA4000-memory.dmp

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memory/1000-19-0x0000000002240000-0x0000000002340000-memory.dmp

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memory/1000-23-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1000-33-0x0000000000400000-0x0000000001FA4000-memory.dmp

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memory/1000-35-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1000-34-0x0000000000400000-0x0000000001FA4000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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