gcleaner | dac1de6b2503baa1e80b0c90555aa87b663cd6a8e57651c97aae775defbe8f29

Analysis

max time kernel
29s
max time network
32s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
08-03-2023 15:01

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General

Target

0b58b97488ac17f7aa80c4581966782d.exe
Size

270KB
MD5

0b58b97488ac17f7aa80c4581966782d
SHA1

d8fc50d1115b21fb3c02311c08ef651cd2808a2a
SHA256

dac1de6b2503baa1e80b0c90555aa87b663cd6a8e57651c97aae775defbe8f29
SHA512

a842310d98a7d9a54a98fd593febcbbad2f963e2a3599218ac5fdbb8c526b2f7ee6113cae3443386384533f81e02ba46883a2663b0fe0a38f5dde544231bc82c
SSDEEP

6144:ZSpkt9lfdyRqKoFrWvzpjhLY/qM8Q50/OP3Xp6Z/ofA:ZWkbpdyRqKvvzhhLkqM8lO5Io

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

1608 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

1036 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1036 taskkill.exe

pid	process
1608	cmd.exe

pid	process
1036	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1036	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

0b58b97488ac17f7aa80c4581966782d.execmd.exe

description	pid	process	target process
PID 2000 wrote to memory of 1608	2000	0b58b97488ac17f7aa80c4581966782d.exe	cmd.exe
PID 2000 wrote to memory of 1608	2000	0b58b97488ac17f7aa80c4581966782d.exe	cmd.exe
PID 2000 wrote to memory of 1608	2000	0b58b97488ac17f7aa80c4581966782d.exe	cmd.exe
PID 2000 wrote to memory of 1608	2000	0b58b97488ac17f7aa80c4581966782d.exe	cmd.exe
PID 1608 wrote to memory of 1036	1608	cmd.exe	taskkill.exe
PID 1608 wrote to memory of 1036	1608	cmd.exe	taskkill.exe
PID 1608 wrote to memory of 1036	1608	cmd.exe	taskkill.exe
PID 1608 wrote to memory of 1036	1608	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\0b58b97488ac17f7aa80c4581966782d.exe
"C:\Users\Admin\AppData\Local\Temp\0b58b97488ac17f7aa80c4581966782d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "0b58b97488ac17f7aa80c4581966782d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\0b58b97488ac17f7aa80c4581966782d.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "0b58b97488ac17f7aa80c4581966782d.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1036

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/2000-55-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download
memory/2000-56-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/2000-58-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download