gcleaner | 2ea8cea35b0ea91fabe87a7969b57c824e972b4734b167af69843c284248b4ad

General

Target

298b615f97b36d6b46a664b2df69c730N.exe
Size

494KB
MD5

298b615f97b36d6b46a664b2df69c730
SHA1

5588d15c5d6b4b4b34d6a2fdd3010c9401559b53
SHA256

2ea8cea35b0ea91fabe87a7969b57c824e972b4734b167af69843c284248b4ad
SHA512

e42222f9898c40c12e8c14cff688a7cf111abcf9528cc3ef86dfa100a574bcdd7b98c13e8076f88216f66bc0663287e26c95970cb4e895105abbbf113073a4e4
SSDEEP

12288:PXyzmAnZNMql8BxUPJBAmGnd52ZWDj/wEP4vA3/AJZ:AnZNzl8qFGd5WW/pf/Y

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

g-clean.in

Signatures

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

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/3856-2-0x00000000008F0000-0x000000000093E000-memory.dmp	family_onlylogger
behavioral2/memory/3856-3-0x0000000000400000-0x0000000000452000-memory.dmp	family_onlylogger
behavioral2/memory/3856-5-0x00000000008F0000-0x000000000093E000-memory.dmp	family_onlylogger
behavioral2/memory/3856-6-0x0000000000400000-0x0000000000452000-memory.dmp	family_onlylogger
behavioral2/memory/3856-4-0x0000000000400000-0x0000000000873000-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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	298b615f97b36d6b46a664b2df69c730N.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
5060	3856	WerFault.exe	83
4256	3856	WerFault.exe	83
208	3856	WerFault.exe	83
1616	3856	WerFault.exe	83
1900	3856	WerFault.exe	83
4792	3856	WerFault.exe	83
3752	3856	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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	298b615f97b36d6b46a664b2df69c730N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2404	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 1304	3856	298b615f97b36d6b46a664b2df69c730N.exe	105
PID 3856 wrote to memory of 1304	3856	298b615f97b36d6b46a664b2df69c730N.exe	105
PID 3856 wrote to memory of 1304	3856	298b615f97b36d6b46a664b2df69c730N.exe	105
PID 1304 wrote to memory of 2404	1304	cmd.exe	109
PID 1304 wrote to memory of 2404	1304	cmd.exe	109
PID 1304 wrote to memory of 2404	1304	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\298b615f97b36d6b46a664b2df69c730N.exe
"C:\Users\Admin\AppData\Local\Temp\298b615f97b36d6b46a664b2df69c730N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 708
  2⤵
  - Program crash
  PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 784
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 920
  2⤵
  - Program crash
  PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 724
  2⤵
  - Program crash
  PID:1616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 936
  2⤵
  - Program crash
  PID:1900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 932
  2⤵
  - Program crash
  PID:4792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "298b615f97b36d6b46a664b2df69c730N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\298b615f97b36d6b46a664b2df69c730N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1304
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "298b615f97b36d6b46a664b2df69c730N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3856 -s 980
  2⤵
  - Program crash
  PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3856 -ip 3856
1⤵
PID:4892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3856 -ip 3856
1⤵
PID:3648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3856 -ip 3856
1⤵
PID:1892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3856 -ip 3856
1⤵
PID:2788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3856 -ip 3856
1⤵
PID:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3856 -ip 3856
1⤵
PID:4456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3856 -ip 3856
1⤵
PID:944

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/3856-1-0x0000000000B00000-0x0000000000C00000-memory.dmp

Filesize
1024KB

Download
memory/3856-2-0x00000000008F0000-0x000000000093E000-memory.dmp

Filesize
312KB

Download
memory/3856-3-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3856-5-0x00000000008F0000-0x000000000093E000-memory.dmp

Filesize
312KB

Download
memory/3856-6-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3856-4-0x0000000000400000-0x0000000000873000-memory.dmp

Filesize
4.4MB

Download

Analysis

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