gcleaner | a8e677e8d7daeb7a36f47f034b38af0667fc72c8674290fad047ae89b760d32d

Analysis

max time kernel
30s
max time network
35s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
21-03-2023 14:36

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General

Target

42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe
Size

312KB
MD5

ae3afa452244676d55392d13204a9f67
SHA1

cbfb355b8cb2aad2ddeded588358491083bb2306
SHA256

42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282
SHA512

c6b2b5f5587fa78dba3f500e31e353f2fb28056ce4e031f377f4c4af7d6a9e8a1b548025954ed0c1b181f326003090e459b8c298416c136a3b8ebf3ec1cbc97d
SSDEEP

6144:q6xqXIQqjW59PnLC4NjserDQjwHgb8D7mpjY0GU:1oXIQqjsNnLC4NjXUqm8

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

1324 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

1220 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1220 taskkill.exe

pid	process
1324	cmd.exe

pid	process
1220	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1220	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.execmd.exe

description	pid	process	target process
PID 848 wrote to memory of 1324	848	42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe	cmd.exe
PID 848 wrote to memory of 1324	848	42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe	cmd.exe
PID 848 wrote to memory of 1324	848	42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe	cmd.exe
PID 848 wrote to memory of 1324	848	42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe	cmd.exe
PID 1324 wrote to memory of 1220	1324	cmd.exe	taskkill.exe
PID 1324 wrote to memory of 1220	1324	cmd.exe	taskkill.exe
PID 1324 wrote to memory of 1220	1324	cmd.exe	taskkill.exe
PID 1324 wrote to memory of 1220	1324	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe
"C:\Users\Admin\AppData\Local\Temp\42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1324

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1220

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/848-55-0x00000000002D0000-0x0000000000310000-memory.dmp

Filesize
256KB

Download
memory/848-56-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download