gcleaner | 81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4

General

Target

81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
Size

317KB
MD5

300ac88cb620c7f146cd5f8304512f8e
SHA1

443e0dc509a77c933fa066fc3d490800416c035c
SHA256

81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4
SHA512

8dd90d5a7161cdae6414b8eda964228711d65d3fd45abbf3226ffeed8bfcfaa74b63d0281f8970606d0770e7c5dac66a90f0f838185a6cdcef262b1148ce9911
SSDEEP

6144:dxTINo/Suhyu3XRAgLhXVfR5ODBFKB11IOet7LWT:nIOSuhyuaehX6F81ya

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

System Information Discovery
T1082

Program crash 11 IoCs

Processes:

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

pid	pid_target	process	target process
3040	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
4060	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
3144	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
1688	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
4920	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
4848	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
2016	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
4064	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
892	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
1656	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
2208	1580	WerFault.exe	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

904 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 904 taskkill.exe

pid	process
904	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	904	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.execmd.exe

description	pid	process	target process
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	cmd.exe
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	cmd.exe
PID 1580 wrote to memory of 5024	1580	81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe	cmd.exe
PID 5024 wrote to memory of 904	5024	cmd.exe	taskkill.exe
PID 5024 wrote to memory of 904	5024	cmd.exe	taskkill.exe
PID 5024 wrote to memory of 904	5024	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe
"C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 480
2⤵
- Program crash
PID:3040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 484
2⤵
- Program crash
PID:4060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 780
2⤵
- Program crash
PID:3144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 800
2⤵
- Program crash
PID:1688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 836
2⤵
- Program crash
PID:4920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 864
2⤵
- Program crash
PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 984
2⤵
- Program crash
PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 992
2⤵
- Program crash
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1428
2⤵
- Program crash
PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1672
2⤵
- Program crash
PID:1656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:5024

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "81e3dea24b09a6ac3a24620402dc6bbcbf23d01faa45e05443ce4c47a05e60c4.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1584
2⤵
- Program crash
PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1580 -ip 1580
1⤵
PID:4164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1580 -ip 1580
1⤵
PID:4304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1580 -ip 1580
1⤵
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1580 -ip 1580
1⤵
PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1580 -ip 1580
1⤵
PID:976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1580 -ip 1580
1⤵
PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1580 -ip 1580
1⤵
PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1580 -ip 1580
1⤵
PID:2376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1580 -ip 1580
1⤵
PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1580 -ip 1580
1⤵
PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1580 -ip 1580
1⤵
PID:784

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VZQAW3IB\advdlc[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1580-1-0x0000000002FF0000-0x00000000030F0000-memory.dmp

Filesize
1024KB

Download
memory/1580-2-0x00000000049D0000-0x0000000004A0C000-memory.dmp

Filesize
240KB

Download
memory/1580-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1580-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1580-15-0x0000000000400000-0x0000000002CAD000-memory.dmp

Filesize
40.7MB

Download
memory/1580-22-0x0000000002FF0000-0x00000000030F0000-memory.dmp

Filesize
1024KB

Download
memory/1580-23-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1580-33-0x0000000000400000-0x0000000002CAD000-memory.dmp

Filesize
40.7MB

Download
memory/1580-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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