gcleaner | 28a518d58bc9de87f171107b5c69fcafc13568cf01badf750312f44369e99eb1

Analysis

max time kernel
28s
max time network
30s
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

9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe
Size

286KB
MD5

67215a65f0750a47be8239b1f0e52ccf
SHA1

c3e13bd46d93894d74fddfda1586dfdcffd836a0
SHA256

9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4
SHA512

c11861b1c5fdc480ea154c1e5c4e22a590c99f6714541997e536dfa485ed82532a5d6387bd40383aae3a8d3f86f060f96af47f6db3b4d929dba097db53b66d42
SSDEEP

6144:9af5UIKNEUtGWCZxD+WQ6WAc+BziMBXn/tz/JExFFtj:9afCvNntGWU1+sWAJ1RJEFtj

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

1424 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

1112 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1112 taskkill.exe

pid	process
1424	cmd.exe

pid	process
1112	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1112	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.execmd.exe

description	pid	process	target process
PID 1760 wrote to memory of 1424	1760	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	cmd.exe
PID 1760 wrote to memory of 1424	1760	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	cmd.exe
PID 1760 wrote to memory of 1424	1760	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	cmd.exe
PID 1760 wrote to memory of 1424	1760	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	cmd.exe
PID 1424 wrote to memory of 1112	1424	cmd.exe	taskkill.exe
PID 1424 wrote to memory of 1112	1424	cmd.exe	taskkill.exe
PID 1424 wrote to memory of 1112	1424	cmd.exe	taskkill.exe
PID 1424 wrote to memory of 1112	1424	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe
"C:\Users\Admin\AppData\Local\Temp\9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1112

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/1760-55-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

Download
memory/1760-56-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download