gcleaner | 3cf4b258142373b805745bdc652582e00b0d95da8c9729be02833977923e62fc

General

Target

fd9a3c71d5a32e7225629951d31dc852.exe
Size

302KB
MD5

fd9a3c71d5a32e7225629951d31dc852
SHA1

a3de7d79c42fa9b7509e64c74805527ef067d008
SHA256

3cf4b258142373b805745bdc652582e00b0d95da8c9729be02833977923e62fc
SHA512

b047e87a77e3f1de57b4f001c879a478ff9eeebfbb26251907484c37c20eb8b179fdd0913be32ef376d063f77a9562acbc295b9472b3b913e4f8cf51a1f52675
SSDEEP

6144:JGLgjInTdk8y0FQ7VkmPun5mrQVXQ/UpSFYc5Qi:8UsTdkAQJkmPA5yQVXbri

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader 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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	fd9a3c71d5a32e7225629951d31dc852.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
1536	1172	WerFault.exe	81
3652	1172	WerFault.exe	81
2096	1172	WerFault.exe	81
3540	1172	WerFault.exe	81
2192	1172	WerFault.exe	81
3304	1172	WerFault.exe	81
4964	1172	WerFault.exe	81
3512	1172	WerFault.exe	81
2780	1172	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	fd9a3c71d5a32e7225629951d31dc852.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
2300	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 2352	1172	fd9a3c71d5a32e7225629951d31dc852.exe	106
PID 1172 wrote to memory of 2352	1172	fd9a3c71d5a32e7225629951d31dc852.exe	106
PID 1172 wrote to memory of 2352	1172	fd9a3c71d5a32e7225629951d31dc852.exe	106
PID 2352 wrote to memory of 2300	2352	cmd.exe	108
PID 2352 wrote to memory of 2300	2352	cmd.exe	108
PID 2352 wrote to memory of 2300	2352	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\fd9a3c71d5a32e7225629951d31dc852.exe
"C:\Users\Admin\AppData\Local\Temp\fd9a3c71d5a32e7225629951d31dc852.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 740
  2⤵
  - Program crash
  PID:1536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 760
  2⤵
  - Program crash
  PID:3652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 740
  2⤵
  - Program crash
  PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 812
  2⤵
  - Program crash
  PID:3540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 904
  2⤵
  - Program crash
  PID:2192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 980
  2⤵
  - Program crash
  PID:3304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 1132
  2⤵
  - Program crash
  PID:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 1448
  2⤵
  - Program crash
  PID:3512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "fd9a3c71d5a32e7225629951d31dc852.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\fd9a3c71d5a32e7225629951d31dc852.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2352
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "fd9a3c71d5a32e7225629951d31dc852.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 1412
  2⤵
  - Program crash
  PID:2780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 1172 -ip 1172
1⤵
PID:2616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1172 -ip 1172
1⤵
PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1172 -ip 1172
1⤵
PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1172 -ip 1172
1⤵
PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1172 -ip 1172
1⤵
PID:3740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1172 -ip 1172
1⤵
PID:2100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1172 -ip 1172
1⤵
PID:984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1172 -ip 1172
1⤵
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1172 -ip 1172
1⤵
PID:4596

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\3HDB1LPD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1172-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1172-2-0x00000000006E0000-0x000000000070D000-memory.dmp

Filesize
180KB

Download
memory/1172-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1172-8-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1172-11-0x00000000006E0000-0x000000000070D000-memory.dmp

Filesize
180KB

Download
memory/1172-10-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/1172-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1172-21-0x0000000000400000-0x0000000000547000-memory.dmp

Filesize
1.3MB

Download
memory/1172-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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