gcleaner | f5aa91ba06cff3fa8c6c98e3c64135a8ba43d0cc389bfb4cee09768267358713

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 15:48

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General

Target

6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe
Size

378KB
MD5

991b4e2195f816f478726186e82dd1ea
SHA1

9ed50806a3e0a9c5f0d76457ccc7369d1fc4e09c
SHA256

6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14
SHA512

97e449a9a443ae686b7e977a4674fb95194a9f525bfa911e6b2a0d52740441f36284f1b952289a37908079a31f26505f0f16335e44f6ec26e578756f72b40452
SSDEEP

6144:C3vILLyDwfzf6aokbVFXH8caFnWi7iDEq/F0sJX9l:/eDwbf6aRj38ei76EqLJ

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

1636 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

1532 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1532 taskkill.exe

pid	process
1636	cmd.exe

pid	process
1532	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1532	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.execmd.exe

description	pid	process	target process
PID 1720 wrote to memory of 1636	1720	6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe	cmd.exe
PID 1720 wrote to memory of 1636	1720	6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe	cmd.exe
PID 1720 wrote to memory of 1636	1720	6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe	cmd.exe
PID 1720 wrote to memory of 1636	1720	6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe	cmd.exe
PID 1636 wrote to memory of 1532	1636	cmd.exe	taskkill.exe
PID 1636 wrote to memory of 1532	1636	cmd.exe	taskkill.exe
PID 1636 wrote to memory of 1532	1636	cmd.exe	taskkill.exe
PID 1636 wrote to memory of 1532	1636	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe
"C:\Users\Admin\AppData\Local\Temp\6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1636
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6f09a1d30715544623eab7c311813fab28fe4b31068960263ccd7ff5812edb14.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1532

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

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Downloads

memory/1720-55-0x0000000000400000-0x0000000002BCC000-memory.dmp

Filesize
39.8MB

Download
memory/1720-56-0x0000000000300000-0x0000000000340000-memory.dmp

Filesize
256KB

Download