gcleaner | 83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa

General

Target
83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
Size 378KB
Sample240617-fxjecswcmf
SHA256 83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa
MD5 3b8e5ba71550f06a25c6b91b3cdcc486
SHA1 5d1a70926fc23d8b8422059999b2bc5ed019aea7
SHA512 cf2792d32ebe77fcc843f57a0a839631091f588238e724c110bd400e1d8d7e306bd4e40313d9d70dc9874a4fcc369cb299e6a4cf3816c8d3ec30e022765794ee
SSDEEP 6144:Gh1MYsTPdUKVaqqypDVDhBzk9LuJXaHFWmrZIOubTi:NYsT1UTqqS1KLBFXrZ/8
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
1428	1404	WerFault.exe	77
3444	1404	WerFault.exe	77
128	1404	WerFault.exe	77
1704	1404	WerFault.exe	77
2804	1404	WerFault.exe	77
3568	1404	WerFault.exe	77
1016	1404	WerFault.exe	77
2388	1404	WerFault.exe	77
5060	1404	WerFault.exe	77
1608	1404	WerFault.exe	77
3656	1404	WerFault.exe	77

Kills process with taskkill 1 IoCs

evasion

pid	Process
5016	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5016	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	101
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	101
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	101
PID 3684 wrote to memory of 5016	3684	cmd.exe	105
PID 3684 wrote to memory of 5016	3684	cmd.exe	105
PID 3684 wrote to memory of 5016	3684	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
"C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 476
  2⤵
  - Program crash
  PID:1428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 480
  2⤵
  - Program crash
  PID:3444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 780
  2⤵
  - Program crash
  PID:128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 800
  2⤵
  - Program crash
  PID:1704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 832
  2⤵
  - Program crash
  PID:2804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 812
  2⤵
  - Program crash
  PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 984
  2⤵
  - Program crash
  PID:1016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1044
  2⤵
  - Program crash
  PID:2388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1332
  2⤵
  - Program crash
  PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1820
  2⤵
  - Program crash
  PID:1608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3684
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1772
  2⤵
  - Program crash
  PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1404 -ip 1404
1⤵
PID:2100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1404 -ip 1404
1⤵
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1404 -ip 1404
1⤵
PID:3636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1404 -ip 1404
1⤵
PID:1340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1404 -ip 1404
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1404 -ip 1404
1⤵
PID:2168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1404 -ip 1404
1⤵
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1404 -ip 1404
1⤵
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:3284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:4188

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\8S54EFAG\advdlc[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

memory/1404-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

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memory/1404-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1404-2-0x00000000006F0000-0x000000000072C000-memory.dmp

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memory/1404-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/1404-13-0x0000000000400000-0x000000000046F000-memory.dmp

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memory/1404-20-0x00000000007D0000-0x00000000008D0000-memory.dmp

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memory/1404-23-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1404-35-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1404-34-0x0000000000400000-0x000000000046F000-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