gcleaner | 995217d74a396e998546e4a9c5127900d423b4c9c349b5f9f8dba898b7fa139f

Analysis

max time kernel
31s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
11-03-2023 15:46

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General

Target

94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe
Size

280KB
MD5

b5d2845d8527d553115463d631b1702d
SHA1

b63b39d1b3d2f477f965b460ebc05e765450723c
SHA256

94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76
SHA512

08fc0ba5967ecc8ff3b4442d59666913b0b704d8e172d34545ac6afcb9b041f93e30f807dd240d6baa76fc2ba56c2a825e6d27bbb755c0cffb841878d2174b08
SSDEEP

6144:ZOLRv3eI/62feWK3az1MbbhOXXASgyA591:k9vf62fS3MSbgndS

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1988 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2016 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2016 taskkill.exe

pid	process
1988	cmd.exe

pid	process
2016	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2016	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.execmd.exe

description	pid	process	target process
PID 1808 wrote to memory of 1988	1808	94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe	cmd.exe
PID 1808 wrote to memory of 1988	1808	94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe	cmd.exe
PID 1808 wrote to memory of 1988	1808	94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe	cmd.exe
PID 1808 wrote to memory of 1988	1808	94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe	cmd.exe
PID 1988 wrote to memory of 2016	1988	cmd.exe	taskkill.exe
PID 1988 wrote to memory of 2016	1988	cmd.exe	taskkill.exe
PID 1988 wrote to memory of 2016	1988	cmd.exe	taskkill.exe
PID 1988 wrote to memory of 2016	1988	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe
"C:\Users\Admin\AppData\Local\Temp\94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "94551b68fcb65d49a5d1d29a0dba5ec3f2e98252fef337a4fba2416ecb8cea76.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1808-55-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1808-56-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download