gcleaner | 1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c

General

Target

1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
Size

287KB
MD5

b9a0fb2e5de338677000af13853a7259
SHA1

90d6e6f9e0d2c025ded6552ff6674cf2224adf7e
SHA256

1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c
SHA512

d1a8a3a8d0aac46e908e2121c1f8e9dbe6799d058d07ebd05bdd3a02fa35089e8e8032a902c08cfb3625dc434f71b558c55fc2d73ee3c999a0dba28955c69471
SSDEEP

6144:r5mY2g1UhO8vSD96v7Y6KF5fEG7KHgtaZ40:VmY24W17FiGq0

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90

5.42.64.56

185.172.128.69

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

Processes:

1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
4156	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
3232	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
1864	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
3852	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
1792	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
2976	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
812	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
4344	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
4432	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
3504	2900	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4752 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4752 taskkill.exe

pid	process
4752	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	4752	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.execmd.exe

description	pid	process	target process
PID 2900 wrote to memory of 4700	2900	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 2900 wrote to memory of 4700	2900	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 2900 wrote to memory of 4700	2900	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 4700 wrote to memory of 4752	4700	cmd.exe	taskkill.exe
PID 4700 wrote to memory of 4752	4700	cmd.exe	taskkill.exe
PID 4700 wrote to memory of 4752	4700	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
"C:\Users\Admin\AppData\Local\Temp\1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 460
2⤵
- Program crash
PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 480
2⤵
- Program crash
PID:3232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 756
2⤵
- Program crash
PID:1864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 756
2⤵
- Program crash
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 796
2⤵
- Program crash
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 844
2⤵
- Program crash
PID:2976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 912
2⤵
- Program crash
PID:812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 916
2⤵
- Program crash
PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 1364
2⤵
- Program crash
PID:4432

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2900 -s 1292
2⤵
- Program crash
PID:3504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2900 -ip 2900
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2900 -ip 2900
1⤵
PID:3808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2900 -ip 2900
1⤵
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2900 -ip 2900
1⤵
PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2900 -ip 2900
1⤵
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2900 -ip 2900
1⤵
PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2900 -ip 2900
1⤵
PID:4580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2900 -ip 2900
1⤵
PID:3816

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 --field-trial-handle=3452,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4432 /prefetch:8
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2900 -ip 2900
1⤵
PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2900 -ip 2900
1⤵
PID:4588

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

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Downloads

memory/2900-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/2900-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2900-2-0x00000000020A0000-0x00000000020DC000-memory.dmp

Filesize
240KB

Download
memory/2900-7-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2900-6-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads