gcleaner | bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2

General

Target

bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
Size

330KB
MD5

760cbf94025c1c7848255de5ab21c63d
SHA1

0aeb8077897e1b58ce3c1f77c1ddf0514ec2e90a
SHA256

bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2
SHA512

1fa23d3dcd1f14f9f2f3ea5e71fc1cb4d47f36a0029f8d9c2f1fe0232c2a588a8bfb317630c6ca97a9413063aa4a97a539c0fb195179aaf95bc018a582e88014
SSDEEP

6144:r0AuHAfVNhpcqpvVKVINYDKYYvuwwFLM/:47KqYVKpDKCww

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 10 IoCs

Processes:

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

pid	pid_target	process	target process
4720	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
4964	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
4820	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
2748	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
1620	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
4436	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
1972	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
2880	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
3704	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
2456	5076	WerFault.exe	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1588 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1588 taskkill.exe

pid	process
1588	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1588	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.execmd.exe

description	pid	process	target process
PID 5076 wrote to memory of 3932	5076	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe	cmd.exe
PID 5076 wrote to memory of 3932	5076	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe	cmd.exe
PID 5076 wrote to memory of 3932	5076	bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe	cmd.exe
PID 3932 wrote to memory of 1588	3932	cmd.exe	taskkill.exe
PID 3932 wrote to memory of 1588	3932	cmd.exe	taskkill.exe
PID 3932 wrote to memory of 1588	3932	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe
"C:\Users\Admin\AppData\Local\Temp\bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 476
2⤵
- Program crash
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 796
2⤵
- Program crash
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 796
2⤵
- Program crash
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 848
2⤵
- Program crash
PID:2748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 888
2⤵
- Program crash
PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1000
2⤵
- Program crash
PID:4436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1104
2⤵
- Program crash
PID:1972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1380
2⤵
- Program crash
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1672
2⤵
- Program crash
PID:3704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:3932

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "bfb37883e483db441614dc6c32c467eec631829df71b5422557dd4b18e38e4a2.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1776
2⤵
- Program crash
PID:2456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5076 -ip 5076
1⤵
PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5076 -ip 5076
1⤵
PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5076 -ip 5076
1⤵
PID:4624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5076 -ip 5076
1⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 340 -p 5076 -ip 5076
1⤵
PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5076 -ip 5076
1⤵
PID:2428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5076 -ip 5076
1⤵
PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5076 -ip 5076
1⤵
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5076 -ip 5076
1⤵
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 5076 -ip 5076
1⤵
PID:3912

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

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

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/5076-2-0x0000000003CF0000-0x0000000003D2C000-memory.dmp

Filesize
240KB

Download
memory/5076-1-0x0000000002180000-0x0000000002280000-memory.dmp

Filesize
1024KB

Download
memory/5076-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/5076-9-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/5076-15-0x0000000000400000-0x0000000001F9E000-memory.dmp

Filesize
27.6MB

Download
memory/5076-19-0x0000000002180000-0x0000000002280000-memory.dmp

Filesize
1024KB

Download
memory/5076-23-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/5076-34-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/5076-33-0x0000000000400000-0x0000000001F9E000-memory.dmp

Filesize
27.6MB

Download

Analysis

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