gcleaner | 5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885

General

Target

5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe
Size

272KB
MD5

83d90b01c734221c05c3f2440bf15660
SHA1

dd183a34dbe2956487e0ade131e5ababf010b797
SHA256

5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885
SHA512

717fe4096a22f3ef19af160f6e2ff53b78e072bdab1314c862fc072532ed98f1e895ee4139ef941939498593e48c44a9383b4415837196473fa4cee7e5c67bf0
SSDEEP

6144:ATfD5BQnup57iPy3Wm1bbjMbs/Wfxk6m+Xyx/U/HDfPgqE:ArQnu+yd1/nW26dyxMfDC

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
4460	1164	WerFault.exe	72
3568	1164	WerFault.exe	72
1520	1164	WerFault.exe	72
3988	1164	WerFault.exe	72
2312	1164	WerFault.exe	72
4212	1164	WerFault.exe	72
4576	1164	WerFault.exe	72
3164	1164	WerFault.exe	72

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1724	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 2848	1164	5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe	82
PID 1164 wrote to memory of 2848	1164	5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe	82
PID 1164 wrote to memory of 2848	1164	5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe	82
PID 2848 wrote to memory of 1724	2848	cmd.exe	84
PID 2848 wrote to memory of 1724	2848	cmd.exe	84
PID 2848 wrote to memory of 1724	2848	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe
"C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 760
  2⤵
  - Program crash
  PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 772
  2⤵
  - Program crash
  PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 844
  2⤵
  - Program crash
  PID:1520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 944
  2⤵
  - Program crash
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 988
  2⤵
  - Program crash
  PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 1112
  2⤵
  - Program crash
  PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 1124
  2⤵
  - Program crash
  PID:4576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1164 -s 1428
  2⤵
  - Program crash
  PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5fb39f0a1b82a980e5c546a61656afee30fe0930cac1525b119521786fcbd885.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1724

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\V28C7N3J\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1164-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/1164-2-0x00000000004B0000-0x00000000004DD000-memory.dmp

Filesize
180KB

Download
memory/1164-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1164-8-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/1164-10-0x00000000004B0000-0x00000000004DD000-memory.dmp

Filesize
180KB

Download
memory/1164-12-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/1164-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1164-21-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/1164-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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