gcleaner | ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b

General

Target

ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe
Size

380KB
MD5

20b97b34517fd95e0ed76b3851d0a6aa
SHA1

9f42219d7a04fb36db0b9ea9918a049cd9181e5d
SHA256

ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b
SHA512

acac82ee4a0ccacd66cc2e9f1e14b70c59225a0891f3c215297ca8adde88f54918b00fc2d7ed5127f60941695acd651d94483655c4bc3b1c5bf5c9fbb2d9c8c3
SSDEEP

6144:qB9W3n+Y9OpuBStPaDKzolF/eQteFY0njtsiPHeY+rfZHif:q23+Y9OBtUmw/eXq0njtsiP+YE

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 10 IoCs

pid	pid_target	Process	procid_target
4724	1680	WerFault.exe	77
1384	1680	WerFault.exe	77
448	1680	WerFault.exe	77
624	1680	WerFault.exe	77
1660	1680	WerFault.exe	77
4076	1680	WerFault.exe	77
3556	1680	WerFault.exe	77
2316	1680	WerFault.exe	77
2088	1680	WerFault.exe	77
4008	1680	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	ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.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
1192	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 1476	1680	ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe	97
PID 1680 wrote to memory of 1476	1680	ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe	97
PID 1680 wrote to memory of 1476	1680	ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe	97
PID 1476 wrote to memory of 1192	1476	cmd.exe	100
PID 1476 wrote to memory of 1192	1476	cmd.exe	100
PID 1476 wrote to memory of 1192	1476	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe
"C:\Users\Admin\AppData\Local\Temp\ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 480
  2⤵
  - Program crash
  PID:4724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 796
  2⤵
  - Program crash
  PID:1384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 816
  2⤵
  - Program crash
  PID:448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 796
  2⤵
  - Program crash
  PID:624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 888
  2⤵
  - Program crash
  PID:1660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 976
  2⤵
  - Program crash
  PID:4076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 1104
  2⤵
  - Program crash
  PID:3556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 1388
  2⤵
  - Program crash
  PID:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 1648
  2⤵
  - Program crash
  PID:2088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "ec1611a910c602aa38efc72cce168726b3d88348ee83f9b885cbd141442b989b.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 516
  2⤵
  - Program crash
  PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1680 -ip 1680
1⤵
PID:1224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1680 -ip 1680
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1680 -ip 1680
1⤵
PID:1868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1680 -ip 1680
1⤵
PID:404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1680 -ip 1680
1⤵
PID:3508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1680 -ip 1680
1⤵
PID:4208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1680 -ip 1680
1⤵
PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1680 -ip 1680
1⤵
PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 1680 -ip 1680
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 1680 -ip 1680
1⤵
PID:4792

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\P6H4A3UA\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1680-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1680-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1680-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1680-12-0x0000000002650000-0x0000000002750000-memory.dmp

Filesize
1024KB

Download
memory/1680-14-0x00000000042C0000-0x00000000042FB000-memory.dmp

Filesize
236KB

Download
memory/1680-1-0x0000000002650000-0x0000000002750000-memory.dmp

Filesize
1024KB

Download
memory/1680-16-0x0000000000400000-0x0000000002477000-memory.dmp

Filesize
32.5MB

Download
memory/1680-2-0x00000000042C0000-0x00000000042FB000-memory.dmp

Filesize
236KB

Download
memory/1680-28-0x0000000000400000-0x0000000002477000-memory.dmp

Filesize
32.5MB

Download
memory/1680-31-0x0000000000400000-0x0000000002477000-memory.dmp

Filesize
32.5MB

Download
memory/1680-38-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1680-37-0x0000000000400000-0x0000000002477000-memory.dmp

Filesize
32.5MB

Download

Analysis

Sharing