gcleaner | 83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa

General

Target

83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
Size

378KB
MD5

3b8e5ba71550f06a25c6b91b3cdcc486
SHA1

5d1a70926fc23d8b8422059999b2bc5ed019aea7
SHA256

83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa
SHA512

cf2792d32ebe77fcc843f57a0a839631091f588238e724c110bd400e1d8d7e306bd4e40313d9d70dc9874a4fcc369cb299e6a4cf3816c8d3ec30e022765794ee
SSDEEP

6144:Gh1MYsTPdUKVaqqypDVDhBzk9LuJXaHFWmrZIOubTi:NYsT1UTqqS1KLBFXrZ/8

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
1428	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
3444	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
128	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
1704	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
2804	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
3568	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
1016	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
2388	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
5060	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
1608	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
3656	1404	WerFault.exe	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

5016 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 5016 taskkill.exe

pid	process
5016	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	5016	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.execmd.exe

description	pid	process	target process
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	cmd.exe
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	cmd.exe
PID 1404 wrote to memory of 3684	1404	83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe	cmd.exe
PID 3684 wrote to memory of 5016	3684	cmd.exe	taskkill.exe
PID 3684 wrote to memory of 5016	3684	cmd.exe	taskkill.exe
PID 3684 wrote to memory of 5016	3684	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe
"C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 476
2⤵
- Program crash
PID:1428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 480
2⤵
- Program crash
PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 780
2⤵
- Program crash
PID:128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 800
2⤵
- Program crash
PID:1704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 832
2⤵
- Program crash
PID:2804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 812
2⤵
- Program crash
PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 984
2⤵
- Program crash
PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1044
2⤵
- Program crash
PID:2388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1332
2⤵
- Program crash
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1820
2⤵
- Program crash
PID:1608

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:3684

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "83f9187bcfa11b0ce2b0522341b6537d94d66e259f95d91f8d209968b8f75daa.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1772
2⤵
- Program crash
PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1404 -ip 1404
1⤵
PID:2100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1404 -ip 1404
1⤵
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1404 -ip 1404
1⤵
PID:3636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1404 -ip 1404
1⤵
PID:1340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1404 -ip 1404
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1404 -ip 1404
1⤵
PID:2168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1404 -ip 1404
1⤵
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1404 -ip 1404
1⤵
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:3284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1404 -ip 1404
1⤵
PID:4188

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\8S54EFAG\advdlc[1].htm
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1404-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/1404-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1404-2-0x00000000006F0000-0x000000000072C000-memory.dmp

Filesize
240KB

Download
memory/1404-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1404-13-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1404-20-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/1404-23-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1404-35-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1404-34-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

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