gcleaner | 25a2a5069c502b7aafebbdf26a2d80225774f39f537f2d1b03e3099300d6b3f9

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
01-04-2023 06:21

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General

Target

411e9fea926f54e6c213adeedc05d03e.exe
Size

311KB
MD5

411e9fea926f54e6c213adeedc05d03e
SHA1

c284cc7f373e9e512b8e8a0b5e127e5959b09eec
SHA256

25a2a5069c502b7aafebbdf26a2d80225774f39f537f2d1b03e3099300d6b3f9
SHA512

91fa1f6128b5aafb84f5dd8dbf13f84a2e35fc04212a6f1a358fa505cf9f1fb0f34973e002e91ac9dc41c19c7bdab0cdf9eddb08883271dde57b2baecca278e9
SSDEEP

3072:3vbbKTou4/uz4jtXl9aYWRF6s8cEv5AWXIwtzIzEP1jq/9RovU46QDTY/+lHViv:kN4G0jt88DuWYwd1jqzovp8/6EzzHpK

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

1280 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

668 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 668 taskkill.exe

pid	process
1280	cmd.exe

pid	process
668	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	668	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

411e9fea926f54e6c213adeedc05d03e.execmd.exe

description	pid	process	target process
PID 1064 wrote to memory of 1280	1064	411e9fea926f54e6c213adeedc05d03e.exe	cmd.exe
PID 1064 wrote to memory of 1280	1064	411e9fea926f54e6c213adeedc05d03e.exe	cmd.exe
PID 1064 wrote to memory of 1280	1064	411e9fea926f54e6c213adeedc05d03e.exe	cmd.exe
PID 1064 wrote to memory of 1280	1064	411e9fea926f54e6c213adeedc05d03e.exe	cmd.exe
PID 1280 wrote to memory of 668	1280	cmd.exe	taskkill.exe
PID 1280 wrote to memory of 668	1280	cmd.exe	taskkill.exe
PID 1280 wrote to memory of 668	1280	cmd.exe	taskkill.exe
PID 1280 wrote to memory of 668	1280	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\411e9fea926f54e6c213adeedc05d03e.exe
"C:\Users\Admin\AppData\Local\Temp\411e9fea926f54e6c213adeedc05d03e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "411e9fea926f54e6c213adeedc05d03e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\411e9fea926f54e6c213adeedc05d03e.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "411e9fea926f54e6c213adeedc05d03e.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:668

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/1064-55-0x00000000001B0000-0x00000000001F0000-memory.dmp

Filesize
256KB

Download
memory/1064-56-0x0000000000400000-0x0000000002B7C000-memory.dmp

Filesize
39.5MB

Download
memory/1064-58-0x0000000000400000-0x0000000002B7C000-memory.dmp

Filesize
39.5MB

Download