gcleaner | 4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50

General

Target

4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe
Size

403KB
MD5

2bec28292653e2f9bec82bf0ecb18f23
SHA1

44a3cde4749d52fdee48879d88594446ae08f693
SHA256

4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50
SHA512

10b91a142408b9dafe1b897e896f3ef1cb58b6c90b41e8fbdf7e93884045afbebd42d230966a67cb55522ac203e5c07a0b2486aec4d7ce09a66b0b70dd8b8e08
SSDEEP

3072:zMLoO5tBeuUJsIHRil98r43BJ87CM2h/OQIhn4kJmotUU6W/c1rpQKwFnmAdvvjG:wjLBmLHRil988Botr5Jztf610rvjwq

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 9 IoCs

pid	pid_target	Process	procid_target
2172	4384	WerFault.exe	80
4452	4384	WerFault.exe	80
396	4384	WerFault.exe	80
1496	4384	WerFault.exe	80
2524	4384	WerFault.exe	80
3288	4384	WerFault.exe	80
4388	4384	WerFault.exe	80
2100	4384	WerFault.exe	80
4412	4384	WerFault.exe	80

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	4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.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
1264	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1264	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 1184	4384	4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe	99
PID 4384 wrote to memory of 1184	4384	4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe	99
PID 4384 wrote to memory of 1184	4384	4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe	99
PID 1184 wrote to memory of 1264	1184	cmd.exe	103
PID 1184 wrote to memory of 1264	1184	cmd.exe	103
PID 1184 wrote to memory of 1264	1184	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe
"C:\Users\Admin\AppData\Local\Temp\4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 780
  2⤵
  - Program crash
  PID:2172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 792
  2⤵
  - Program crash
  PID:4452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 792
  2⤵
  - Program crash
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 780
  2⤵
  - Program crash
  PID:1496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 936
  2⤵
  - Program crash
  PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1064
  2⤵
  - Program crash
  PID:3288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 956
  2⤵
  - Program crash
  PID:4388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1448
  2⤵
  - Program crash
  PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1184
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4e75f8712ee2f529c1e4d034662a86ad352a76e851996f5cf67e58abd949cc50.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1544
  2⤵
  - Program crash
  PID:4412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4384 -ip 4384
1⤵
PID:1320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4384 -ip 4384
1⤵
PID:3196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4384 -ip 4384
1⤵
PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4384 -ip 4384
1⤵
PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4384 -ip 4384
1⤵
PID:4172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4384 -ip 4384
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4384 -ip 4384
1⤵
PID:3312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4384 -ip 4384
1⤵
PID:2196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4384 -ip 4384
1⤵
PID:1876

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\M3DUQV5R\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4384-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/4384-2-0x0000000002450000-0x000000000247D000-memory.dmp

Filesize
180KB

Download
memory/4384-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4384-7-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/4384-10-0x0000000002450000-0x000000000247D000-memory.dmp

Filesize
180KB

Download
memory/4384-9-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4384-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4384-21-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/4384-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing