gcleaner | 780ed40282d7d392080687d1e32bc017f63ffab0c0fb020d1dcf3bf7c4c186da

Analysis

max time kernel
30s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
01-04-2023 05:33

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General

Target

5e71070130f4fc38b4e3f357d0bed6f8.exe
Size

287KB
MD5

5e71070130f4fc38b4e3f357d0bed6f8
SHA1

5615de8da01bd898004c78474efa569731876976
SHA256

780ed40282d7d392080687d1e32bc017f63ffab0c0fb020d1dcf3bf7c4c186da
SHA512

8997fd756c5c466b6cc4eeaa327dce7f22d872d0e033fd0196199c5198081ad9db2b1a1ccd53bb99770339222183ff6c9c3b3908286a2104476ccf2e9644b02c
SSDEEP

6144:9dU+m6BDMpH1ybmak9rJyds1kau0Z2DIM:o+m6B21amYahuM2D

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

1192 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

564 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 564 taskkill.exe

pid	process
1192	cmd.exe

pid	process
564	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	564	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

5e71070130f4fc38b4e3f357d0bed6f8.execmd.exe

description	pid	process	target process
PID 1704 wrote to memory of 1192	1704	5e71070130f4fc38b4e3f357d0bed6f8.exe	cmd.exe
PID 1704 wrote to memory of 1192	1704	5e71070130f4fc38b4e3f357d0bed6f8.exe	cmd.exe
PID 1704 wrote to memory of 1192	1704	5e71070130f4fc38b4e3f357d0bed6f8.exe	cmd.exe
PID 1704 wrote to memory of 1192	1704	5e71070130f4fc38b4e3f357d0bed6f8.exe	cmd.exe
PID 1192 wrote to memory of 564	1192	cmd.exe	taskkill.exe
PID 1192 wrote to memory of 564	1192	cmd.exe	taskkill.exe
PID 1192 wrote to memory of 564	1192	cmd.exe	taskkill.exe
PID 1192 wrote to memory of 564	1192	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\5e71070130f4fc38b4e3f357d0bed6f8.exe
"C:\Users\Admin\AppData\Local\Temp\5e71070130f4fc38b4e3f357d0bed6f8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "5e71070130f4fc38b4e3f357d0bed6f8.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5e71070130f4fc38b4e3f357d0bed6f8.exe" & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1192

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "5e71070130f4fc38b4e3f357d0bed6f8.exe" /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:564

Network

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/1704-55-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download
memory/1704-56-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1704-58-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download