gcleaner | f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3

General

Target

f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe
Size

310KB
MD5

6c75f4f6f5e088a7fa62a7b840c1e319
SHA1

630f35575568b0b5fe8c1122872f4cce8548d001
SHA256

f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3
SHA512

b7dbb97ef65e5bdf069e7af468681fd08f98f19cd65c40630818e95c5d1782c3eb1c2aa7fd5450dba268bd9480742353644e5cc97e933702d6ac1d827cce073d
SSDEEP

6144:mIopxV3C1cvA7vTw6a5kYi6zlqYCRProo5:mICVy1c2vsROYi4MYCRPro

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
396	1180	WerFault.exe	78
4820	1180	WerFault.exe	78
4644	1180	WerFault.exe	78
4856	1180	WerFault.exe	78
428	1180	WerFault.exe	78
3328	1180	WerFault.exe	78
3120	1180	WerFault.exe	78
1708	1180	WerFault.exe	78
2960	1180	WerFault.exe	78
1012	1180	WerFault.exe	78

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3088	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 2780	1180	f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe	98
PID 1180 wrote to memory of 2780	1180	f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe	98
PID 1180 wrote to memory of 2780	1180	f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe	98
PID 2780 wrote to memory of 3088	2780	cmd.exe	102
PID 2780 wrote to memory of 3088	2780	cmd.exe	102
PID 2780 wrote to memory of 3088	2780	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe
"C:\Users\Admin\AppData\Local\Temp\f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 476
  2⤵
  - Program crash
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 796
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 816
  2⤵
  - Program crash
  PID:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 796
  2⤵
  - Program crash
  PID:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 836
  2⤵
  - Program crash
  PID:428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 976
  2⤵
  - Program crash
  PID:3328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 984
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1392
  2⤵
  - Program crash
  PID:1708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1668
  2⤵
  - Program crash
  PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f882cbd5034165bd0b67394a0d3fa0126f06a4fa2b5c0aaaf41fda6cf645f2c3.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 488
  2⤵
  - Program crash
  PID:1012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 1180 -ip 1180
1⤵
PID:920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1180 -ip 1180
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1180 -ip 1180
1⤵
PID:1684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1180 -ip 1180
1⤵
PID:2364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1180 -ip 1180
1⤵
PID:1136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1180 -ip 1180
1⤵
PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1180 -ip 1180
1⤵
PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1180 -ip 1180
1⤵
PID:4672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1180 -ip 1180
1⤵
PID:1716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1180 -ip 1180
1⤵
PID:768

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/1180-1-0x00000000029E0000-0x0000000002AE0000-memory.dmp

Filesize
1024KB

Download
memory/1180-2-0x0000000004600000-0x000000000463B000-memory.dmp

Filesize
236KB

Download
memory/1180-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1180-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1180-13-0x00000000029E0000-0x0000000002AE0000-memory.dmp

Filesize
1024KB

Download
memory/1180-15-0x0000000004600000-0x000000000463B000-memory.dmp

Filesize
236KB

Download
memory/1180-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1180-16-0x0000000000400000-0x000000000279E000-memory.dmp

Filesize
35.6MB

Download
memory/1180-35-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1180-34-0x0000000000400000-0x000000000279E000-memory.dmp

Filesize
35.6MB

Download

Analysis

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