gcleaner | eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad

General

Target

eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe
Size

431KB
MD5

bb228b1ce76ee8fc38f2085e37f28236
SHA1

d3b5540cbdb18215178b4bf1042d5f5d41af1ee1
SHA256

eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad
SHA512

d444b4f95f54ad549aa739f11b7a4e8eca8663db573a6e5304c60f223fe70bad2b61cc6964351a53e7373548c1ff5b4ed10dec1d705fef3a4d8f70a152ebeb20
SSDEEP

6144:XNXYiQbRBVW4qzPUgwwkKPvetP+ZsRBFufhPklb80PfAOK+l8O:RY1bZqzRwwkKOhUpKb8Ktb

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

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
1004	4728	WerFault.exe	77
5096	4728	WerFault.exe	77
3772	4728	WerFault.exe	77
2996	4728	WerFault.exe	77
1776	4728	WerFault.exe	77
4200	4728	WerFault.exe	77
4732	4728	WerFault.exe	77
228	4728	WerFault.exe	77
1388	4728	WerFault.exe	77
1556	4728	WerFault.exe	77
3164	4728	WerFault.exe	77

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	eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.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
1316	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1316	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 1068	4728	eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe	99
PID 4728 wrote to memory of 1068	4728	eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe	99
PID 4728 wrote to memory of 1068	4728	eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe	99
PID 1068 wrote to memory of 1316	1068	cmd.exe	102
PID 1068 wrote to memory of 1316	1068	cmd.exe	102
PID 1068 wrote to memory of 1316	1068	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe
"C:\Users\Admin\AppData\Local\Temp\eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 476
  2⤵
  - Program crash
  PID:1004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 500
  2⤵
  - Program crash
  PID:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 788
  2⤵
  - Program crash
  PID:3772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 800
  2⤵
  - Program crash
  PID:2996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 788
  2⤵
  - Program crash
  PID:1776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 872
  2⤵
  - Program crash
  PID:4200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 960
  2⤵
  - Program crash
  PID:4732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 964
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 1312
  2⤵
  - Program crash
  PID:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 1648
  2⤵
  - Program crash
  PID:1556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "eb973f49b1db6de54471ee34d668e4f1fb079b856a311284abe41d115e2c85ad.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 1720
  2⤵
  - Program crash
  PID:3164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4728 -ip 4728
1⤵
PID:2376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4728 -ip 4728
1⤵
PID:2840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4728 -ip 4728
1⤵
PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4728 -ip 4728
1⤵
PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4728 -ip 4728
1⤵
PID:1884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4728 -ip 4728
1⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4728 -ip 4728
1⤵
PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4728 -ip 4728
1⤵
PID:3912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4728 -ip 4728
1⤵
PID:3616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 4728 -ip 4728
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4728 -ip 4728
1⤵
PID:4548

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\LQOABF8X\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4728-1-0x0000000002640000-0x0000000002740000-memory.dmp

Filesize
1024KB

Download
memory/4728-2-0x00000000042D0000-0x000000000430B000-memory.dmp

Filesize
236KB

Download
memory/4728-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4728-9-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4728-13-0x0000000002640000-0x0000000002740000-memory.dmp

Filesize
1024KB

Download
memory/4728-15-0x00000000042D0000-0x000000000430B000-memory.dmp

Filesize
236KB

Download
memory/4728-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4728-16-0x0000000000400000-0x0000000002485000-memory.dmp

Filesize
32.5MB

Download
memory/4728-29-0x0000000000400000-0x0000000002485000-memory.dmp

Filesize
32.5MB

Download
memory/4728-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4728-35-0x0000000000400000-0x0000000002485000-memory.dmp

Filesize
32.5MB

Download

Analysis

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