gcleaner | e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb

General

Target

e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe
Size

270KB
MD5

9230ef97a9a569e3a52b3701db960bec
SHA1

5281258f8a82ebe0399f03b9b099e28335523508
SHA256

e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb
SHA512

2a5da291f77c279823b6da9c13989d485fe3a2e4ad48ee98811d1393c8c8283e3d47aa1b425f98bed1926253187b2f3542c004bec884da4d37b0f27958b24530
SSDEEP

3072:wILRxWrfH3gMKR1MnwqaeGgkTinTDKblVj5EzLXaZbIcZXlf4lpbQ:wAxafH3gMKR1x3edkTiTDKbl8Xq5ZY

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
1072	4908	WerFault.exe	79
1136	4908	WerFault.exe	79
4764	4908	WerFault.exe	79
3984	4908	WerFault.exe	79
3720	4908	WerFault.exe	79
1944	4908	WerFault.exe	79
4936	4908	WerFault.exe	79
3156	4908	WerFault.exe	79

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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3568	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 4588	4908	e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe	96
PID 4908 wrote to memory of 4588	4908	e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe	96
PID 4908 wrote to memory of 4588	4908	e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe	96
PID 4588 wrote to memory of 3568	4588	cmd.exe	100
PID 4588 wrote to memory of 3568	4588	cmd.exe	100
PID 4588 wrote to memory of 3568	4588	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe
"C:\Users\Admin\AppData\Local\Temp\e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 780
  2⤵
  - Program crash
  PID:1072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 792
  2⤵
  - Program crash
  PID:1136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 780
  2⤵
  - Program crash
  PID:4764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 872
  2⤵
  - Program crash
  PID:3984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 936
  2⤵
  - Program crash
  PID:3720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1048
  2⤵
  - Program crash
  PID:1944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1480
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "e6361c1ef0bf8bcf2214c38398271d7f712ec8bd695f537d5f8778ef792f95cb.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 1440
  2⤵
  - Program crash
  PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4908 -ip 4908
1⤵
PID:3268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4908 -ip 4908
1⤵
PID:1816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4908 -ip 4908
1⤵
PID:1108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4908 -ip 4908
1⤵
PID:4100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4908 -ip 4908
1⤵
PID:3396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4908 -ip 4908
1⤵
PID:2792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4908 -ip 4908
1⤵
PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4908 -ip 4908
1⤵
PID:2720

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\FF387UFK\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4908-1-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download
memory/4908-2-0x00000000022B0000-0x00000000022DD000-memory.dmp

Filesize
180KB

Download
memory/4908-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4908-8-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download
memory/4908-10-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4908-11-0x00000000022B0000-0x00000000022DD000-memory.dmp

Filesize
180KB

Download
memory/4908-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4908-21-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4908-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing