gcleaner | 114aa6cb595ed49423707788c3a06a79e250d23d0615108cbb3fb5bdd20af5c8

General

Target

b6e4dc4fd0cc50fbb1236fe1108b886d.exe
Size

342KB
MD5

b6e4dc4fd0cc50fbb1236fe1108b886d
SHA1

ca17fc4111dbc08551aabe0e890c337448a19eda
SHA256

114aa6cb595ed49423707788c3a06a79e250d23d0615108cbb3fb5bdd20af5c8
SHA512

eaebb7b46714e2e15fd604383f5c7bb092c7f2669edf1c462544aeb3a11a38b8feacdfae7b78fe6cc0b96c6764909dad7e249c0d31320a26c5df1fa1c911dfbb
SSDEEP

3072:FGSlqrvGown4AMsIqQk+ooNKeDe0T+ZvcXwR+YKZfwmuF5GZ4WDm/5O5XP0hd5A/:FanwpoNfe0Tb0aBwmuWaWa/5ORMAQOo

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90

5.42.65.64

Attributes

url_path
/advdlc.php

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b6e4dc4fd0cc50fbb1236fe1108b886d.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
2200	2548	WerFault.exe	88
2556	2548	WerFault.exe	88
1808	2548	WerFault.exe	88
224	2548	WerFault.exe	88
4632	2548	WerFault.exe	88
1520	2548	WerFault.exe	88
180	2548	WerFault.exe	88
4156	2548	WerFault.exe	88

Kills process with taskkill 1 IoCs

evasion

pid	Process
892	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 3060	2548	b6e4dc4fd0cc50fbb1236fe1108b886d.exe	115
PID 2548 wrote to memory of 3060	2548	b6e4dc4fd0cc50fbb1236fe1108b886d.exe	115
PID 2548 wrote to memory of 3060	2548	b6e4dc4fd0cc50fbb1236fe1108b886d.exe	115
PID 3060 wrote to memory of 892	3060	cmd.exe	117
PID 3060 wrote to memory of 892	3060	cmd.exe	117
PID 3060 wrote to memory of 892	3060	cmd.exe	117

C:\Users\Admin\AppData\Local\Temp\b6e4dc4fd0cc50fbb1236fe1108b886d.exe
"C:\Users\Admin\AppData\Local\Temp\b6e4dc4fd0cc50fbb1236fe1108b886d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 744
  2⤵
  - Program crash
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 764
  2⤵
  - Program crash
  PID:2556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 744
  2⤵
  - Program crash
  PID:1808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 816
  2⤵
  - Program crash
  PID:224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 904
  2⤵
  - Program crash
  PID:4632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 980
  2⤵
  - Program crash
  PID:1520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 1032
  2⤵
  - Program crash
  PID:180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 1364
  2⤵
  - Program crash
  PID:4156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b6e4dc4fd0cc50fbb1236fe1108b886d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b6e4dc4fd0cc50fbb1236fe1108b886d.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b6e4dc4fd0cc50fbb1236fe1108b886d.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2548 -ip 2548
1⤵
PID:4456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 2548 -ip 2548
1⤵
PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 2548 -ip 2548
1⤵
PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 2548 -ip 2548
1⤵
PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 2548 -ip 2548
1⤵
PID:2716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 2548 -ip 2548
1⤵
PID:2456

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4132 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2548 -ip 2548
1⤵
PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2548 -ip 2548
1⤵
PID:2192

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2548-1-0x0000000001C50000-0x0000000001D50000-memory.dmp

Filesize
1024KB

Download
memory/2548-2-0x0000000003760000-0x000000000378D000-memory.dmp

Filesize
180KB

Download
memory/2548-3-0x0000000000400000-0x0000000001A20000-memory.dmp

Filesize
22.1MB

Download
memory/2548-6-0x0000000001C50000-0x0000000001D50000-memory.dmp

Filesize
1024KB

Download
memory/2548-7-0x0000000003760000-0x000000000378D000-memory.dmp

Filesize
180KB

Download
memory/2548-11-0x0000000000400000-0x0000000001A20000-memory.dmp

Filesize
22.1MB

Download

Analysis

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