gcleaner | 6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671

General

Target
6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe
Size 382KB
Sample240528-wb8ecsfa22
SHA256 6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671
MD5 b2dabc8461031934a6524df2e7bce27f
SHA1 b6fcedbd1f884d23fe1f0367e653821df56fd55a
SHA512 b910cb887744594e722f835d48671d0ca549b450a47713764a7b2bc699c38b1d6a114f49bba7f467312a611e0561c991a0b45a26aa76a470e8a473ef840415c8
SSDEEP 6144:uoTbNLzTArkioOifFRpCn4zFkG+bL5/GyhAZTb+els:uoTbNjAr5oOiD44zFHKRaZx
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
4256	1544	WerFault.exe	79
4512	1544	WerFault.exe	79
3584	1544	WerFault.exe	79
4752	1544	WerFault.exe	79
1512	1544	WerFault.exe	79
3028	1544	WerFault.exe	79
2184	1544	WerFault.exe	79
2004	1544	WerFault.exe	79
1788	1544	WerFault.exe	79
4084	1544	WerFault.exe	79
4112	1544	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
2392	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 464	1544	6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe	101
PID 1544 wrote to memory of 464	1544	6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe	101
PID 1544 wrote to memory of 464	1544	6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe	101
PID 464 wrote to memory of 2392	464	cmd.exe	105
PID 464 wrote to memory of 2392	464	cmd.exe	105
PID 464 wrote to memory of 2392	464	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe
"C:\Users\Admin\AppData\Local\Temp\6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 476
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 500
  2⤵
  - Program crash
  PID:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 780
  2⤵
  - Program crash
  PID:3584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 800
  2⤵
  - Program crash
  PID:4752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 800
  2⤵
  - Program crash
  PID:1512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 876
  2⤵
  - Program crash
  PID:3028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 984
  2⤵
  - Program crash
  PID:2184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1068
  2⤵
  - Program crash
  PID:2004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1400
  2⤵
  - Program crash
  PID:1788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1712
  2⤵
  - Program crash
  PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:464
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6a94ccad971931a56537e61f3b7fb6c0f65069b729861e2575b90e5ceea87671.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1544 -s 1664
  2⤵
  - Program crash
  PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1544 -ip 1544
1⤵
PID:4856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1544 -ip 1544
1⤵
PID:1864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1544 -ip 1544
1⤵
PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1544 -ip 1544
1⤵
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1544 -ip 1544
1⤵
PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1544 -ip 1544
1⤵
PID:3500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1544 -ip 1544
1⤵
PID:3312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1544 -ip 1544
1⤵
PID:1504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1544 -ip 1544
1⤵
PID:1240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1544 -ip 1544
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1544 -ip 1544
1⤵
PID:4324

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\C76012RU\advdlc[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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memory/1544-2-0x00000000049E0000-0x0000000004A1C000-memory.dmp

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memory/1544-1-0x0000000002F40000-0x0000000003040000-memory.dmp

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memory/1544-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1544-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/1544-15-0x0000000000400000-0x0000000002CBE000-memory.dmp

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memory/1544-18-0x0000000002F40000-0x0000000003040000-memory.dmp

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memory/1544-22-0x00000000049E0000-0x0000000004A1C000-memory.dmp

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memory/1544-24-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1544-35-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/1544-34-0x0000000000400000-0x0000000002CBE000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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