gcleaner | 9cfdc5f11ab2c97fd116b930b1e20d51ecb607efdbbb106811bdfb3288a0b82a

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23/01/2023, 18:44

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General

Target
37a99217fd1c1d002506c4bb8cc8bc8e.exe
Size 398KB
Sample230123-xdg6maef99
SHA256 9cfdc5f11ab2c97fd116b930b1e20d51ecb607efdbbb106811bdfb3288a0b82a
MD5 37a99217fd1c1d002506c4bb8cc8bc8e
SHA1 89e2405df89889129a279efa86894e711ea37f57
SHA512 c549ca55474945ebb442dc65c1701bacb0639a8dc6ef4bc15e2e7ad47de1f5f22a4ee12a5afeec0dfab8b5b7e0a0acd374de44c91fcd6aa5385a53008468be76
SSDEEP 6144:zmLeVjjs7ExFE1qcrYJclWdT9z59dDLOtQK/fu1d0amTbV:zmiVXUExmYJXdDytQKXu1J
MD5 SHA1 SHA512 SSDEEP

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
944	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
1064	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 944	1704	37a99217fd1c1d002506c4bb8cc8bc8e.exe	30
PID 1704 wrote to memory of 944	1704	37a99217fd1c1d002506c4bb8cc8bc8e.exe	30
PID 1704 wrote to memory of 944	1704	37a99217fd1c1d002506c4bb8cc8bc8e.exe	30
PID 1704 wrote to memory of 944	1704	37a99217fd1c1d002506c4bb8cc8bc8e.exe	30
PID 944 wrote to memory of 1064	944	cmd.exe	32
PID 944 wrote to memory of 1064	944	cmd.exe	32
PID 944 wrote to memory of 1064	944	cmd.exe	32
PID 944 wrote to memory of 1064	944	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe
"C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "37a99217fd1c1d002506c4bb8cc8bc8e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:944
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "37a99217fd1c1d002506c4bb8cc8bc8e.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1064

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

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Downloads

memory/1704-54-0x0000000075831000-0x0000000075833000-memory.dmp

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memory/1704-55-0x000000000059C000-0x00000000005C2000-memory.dmp

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memory/1704-56-0x0000000000240000-0x0000000000280000-memory.dmp

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memory/1704-57-0x0000000000400000-0x000000000046B000-memory.dmp

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memory/1704-59-0x000000000059C000-0x00000000005C2000-memory.dmp

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memory/1704-60-0x0000000000400000-0x000000000046B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads