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
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
1612	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
3936	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
1356	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
420	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
2508	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
776	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
4900	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
2416	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
4220	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
4404	988	WerFault.exe	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4660 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4660 taskkill.exe

pid	process
4660	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	4660	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.execmd.exe

description	pid	process	target process
PID 988 wrote to memory of 3748	988	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 988 wrote to memory of 3748	988	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 988 wrote to memory of 3748	988	1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe	cmd.exe
PID 3748 wrote to memory of 4660	3748	cmd.exe	taskkill.exe
PID 3748 wrote to memory of 4660	3748	cmd.exe	taskkill.exe
PID 3748 wrote to memory of 4660	3748	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe
"C:\Users\Admin\AppData\Local\Temp\1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 484
2⤵
- Program crash
PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 500
2⤵
- Program crash
PID:3936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 780
2⤵
- Program crash
PID:1356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 820
2⤵
- Program crash
PID:420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 836
2⤵
- Program crash
PID:2508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 800
2⤵
- Program crash
PID:776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 984
2⤵
- Program crash
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 1044
2⤵
- Program crash
PID:2416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 1452
2⤵
- Program crash
PID:4220

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:3748

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "1b4f4c3780297e1db49b325004870501280478272777b93757678644ba22fa1c.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 1364
2⤵
- Program crash
PID:4404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 988 -ip 988
1⤵
PID:488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 988 -ip 988
1⤵
PID:1548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 988 -ip 988
1⤵
PID:1812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 988 -ip 988
1⤵
PID:3864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 988 -ip 988
1⤵
PID:2196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 988 -ip 988
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 988 -ip 988
1⤵
PID:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 988 -ip 988
1⤵
PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 988 -ip 988
1⤵
PID:240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 988 -ip 988
1⤵
PID:4348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/988-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/988-2-0x00000000021A0000-0x00000000021DC000-memory.dmp

Filesize
240KB

Download
memory/988-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/988-7-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/988-6-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

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