gcleaner | 4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62

General

Target

4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe
Size

332KB
MD5

b43e6bb71d463a7eed07ee2f411eecb0
SHA1

e8d487e0ae107877142a1dfa2219d1e2c59e976f
SHA256

4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62
SHA512

34f5f3f32940cab47c731f783e5fafb367c6058ac720dd20b1e909178f3af9338c4cfe5efd5d28976be7b9d9e86081e2e7d297d5ea869088d477d45d6008f72f
SSDEEP

6144:TBSTuWUckSbLG37/NG2ZO7nK/kgUaYJIpOok7+K:TBSTuWUye37/HUnK/kp+u+

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

ggg-cl.biz

45.9.20.13

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger
Onlylogger family
onlylogger

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/3636-2-0x0000000000B40000-0x0000000000B88000-memory.dmp	family_onlylogger
behavioral2/memory/3636-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3636-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3636-6-0x0000000000B40000-0x0000000000B88000-memory.dmp	family_onlylogger
behavioral2/memory/3636-5-0x0000000000400000-0x0000000000883000-memory.dmp	family_onlylogger

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.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
1748	3636	WerFault.exe	83
3952	3636	WerFault.exe	83
1544	3636	WerFault.exe	83
3532	3636	WerFault.exe	83
4812	3636	WerFault.exe	83
1324	3636	WerFault.exe	83
4748	3636	WerFault.exe	83

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	4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.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
1580	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1580	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3636 wrote to memory of 852	3636	4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe	108
PID 3636 wrote to memory of 852	3636	4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe	108
PID 3636 wrote to memory of 852	3636	4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe	108
PID 852 wrote to memory of 1580	852	cmd.exe	112
PID 852 wrote to memory of 1580	852	cmd.exe	112
PID 852 wrote to memory of 1580	852	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe
"C:\Users\Admin\AppData\Local\Temp\4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 688
  2⤵
  - Program crash
  PID:1748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 784
  2⤵
  - Program crash
  PID:3952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 788
  2⤵
  - Program crash
  PID:1544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 916
  2⤵
  - Program crash
  PID:3532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 916
  2⤵
  - Program crash
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 968
  2⤵
  - Program crash
  PID:1324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:852
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4722b8ae2d4b0cd9b5eae918fa346ef32cd56eb4fd23a74993c3c5337a786e62N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 748
  2⤵
  - Program crash
  PID:4748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3636 -ip 3636
1⤵
PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3636 -ip 3636
1⤵
PID:2632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3636 -ip 3636
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3636 -ip 3636
1⤵
PID:3364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3636 -ip 3636
1⤵
PID:4764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3636 -ip 3636
1⤵
PID:3220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3636 -ip 3636
1⤵
PID:3508

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/3636-2-0x0000000000B40000-0x0000000000B88000-memory.dmp

Filesize
288KB

Download
memory/3636-1-0x0000000000C20000-0x0000000000D20000-memory.dmp

Filesize
1024KB

Download
memory/3636-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3636-4-0x0000000000C20000-0x0000000000D20000-memory.dmp

Filesize
1024KB

Download
memory/3636-7-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3636-6-0x0000000000B40000-0x0000000000B88000-memory.dmp

Filesize
288KB

Download
memory/3636-5-0x0000000000400000-0x0000000000883000-memory.dmp

Filesize
4.5MB

Download

Analysis

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