gcleaner | b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa

General

Target

b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe
Size

270KB
MD5

07288e5e03cd70d0ac2cc306bc45083c
SHA1

610dd36a7ac135f6a7b130bbe5a8a0f65dfb3475
SHA256

b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa
SHA512

a15bf038508474fd987390feae4afe4eacb5cb71086535f3ba0ae9c196d6fc53ef848c53ff7da817754adcffa3218ef62a178c8ea36991138a9eb28552407340
SSDEEP

3072:J2CMdPt9W8LTxXLJBOf8wm2xxDOmRkgx8NYg+5DkD+IqgUJX07GAC0G4rVwx6C+F:0dl99LTxXTe8wtxkSkYgFvqryPfV+4

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
3660	1608	WerFault.exe	81
1352	1608	WerFault.exe	81
4716	1608	WerFault.exe	81
916	1608	WerFault.exe	81
2400	1608	WerFault.exe	81
3872	1608	WerFault.exe	81
3776	1608	WerFault.exe	81

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	b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.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
1788	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 2168	1608	b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe	95
PID 1608 wrote to memory of 2168	1608	b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe	95
PID 1608 wrote to memory of 2168	1608	b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe	95
PID 2168 wrote to memory of 1788	2168	cmd.exe	99
PID 2168 wrote to memory of 1788	2168	cmd.exe	99
PID 2168 wrote to memory of 1788	2168	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe
"C:\Users\Admin\AppData\Local\Temp\b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 732
  2⤵
  - Program crash
  PID:3660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 780
  2⤵
  - Program crash
  PID:1352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 916
  2⤵
  - Program crash
  PID:4716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 772
  2⤵
  - Program crash
  PID:916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 932
  2⤵
  - Program crash
  PID:2400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 944
  2⤵
  - Program crash
  PID:3872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b58e7960e34921d61b87169ed3465b816145d06f04ab42723688bf12e3201faa.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 1060
  2⤵
  - Program crash
  PID:3776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1608 -ip 1608
1⤵
PID:1080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1608 -ip 1608
1⤵
PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1608 -ip 1608
1⤵
PID:3820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1608 -ip 1608
1⤵
PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1608 -ip 1608
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1608 -ip 1608
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 1608 -ip 1608
1⤵
PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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

memory/1608-2-0x0000000002190000-0x00000000021D0000-memory.dmp

Filesize
256KB

Download
memory/1608-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/1608-3-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1608-4-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1608-5-0x0000000002190000-0x00000000021D0000-memory.dmp

Filesize
256KB

Download
memory/1608-6-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

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