gcleaner | 7b04c75b0055274afb925e2b507c26d4bd3b465d40ddc5007a98137372186dc9

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
08/03/2023, 12:48

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General

Target

4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
Size

385KB
MD5

34f8808d1a51641fac355ba5c92f7114
SHA1

eb6774b48254e0b37f357dffb5ea620bc8cca5f3
SHA256

4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f
SHA512

dfff6523cf9393c3a9e41925c6a8905ea4be3155a46334193ed839b783288ed7ccb9fe946411d2c1e896eb839d8cb3e76ed1cadb1987f616fdede1940d2146a5
SSDEEP

3072:t5uIKIRGXJuLGNafEnyKWus/1T6J2d+kVojCI40+/xJP92VBY3TQGcuD4EBWrFVU:YI6uLGcE70dpd+kVx1x/2VWxcu8sWR

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

pid	Process
1560	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

pid	Process
920	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	920	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1560	1408	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	28
PID 1408 wrote to memory of 1560	1408	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	28
PID 1408 wrote to memory of 1560	1408	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	28
PID 1408 wrote to memory of 1560	1408	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	28
PID 1560 wrote to memory of 920	1560	cmd.exe	30
PID 1560 wrote to memory of 920	1560	cmd.exe	30
PID 1560 wrote to memory of 920	1560	cmd.exe	30
PID 1560 wrote to memory of 920	1560	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
"C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1560
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:920

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/1408-55-0x0000000000400000-0x0000000002BCE000-memory.dmp

Filesize
39.8MB

Download
memory/1408-56-0x00000000003B0000-0x00000000003F0000-memory.dmp

Filesize
256KB

Download