gcleaner | 485cadde1de44b50c205f7019b7f63222af1e779b9a14b9363bd811d6933f80c

Analysis

max time kernel
30s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
12-03-2023 17:38

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General

Target

354895bd5079cc205b265799b71ec05c.exe
Size

276KB
MD5

354895bd5079cc205b265799b71ec05c
SHA1

1016ac93fad8d1706255e96f7807c1950bd3d78c
SHA256

485cadde1de44b50c205f7019b7f63222af1e779b9a14b9363bd811d6933f80c
SHA512

792fd2aa10633cb5b59ae51b2e124d9e2765f1d830b9f785666ef09683380e765b299fb528d319662dedcc0503914a95e5a30a128c021f20bb3498c047395b8f
SSDEEP

3072:qmEFfQzn7IRveaMP7osVhZTTqadpBtrWAbTJhzoxM7viqOUAX6xJ9n+T6:UFYznoeaMZXbSAp8pz+

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

1400 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

1732 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1732 taskkill.exe

pid	process
1400	cmd.exe

pid	process
1732	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1732	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

354895bd5079cc205b265799b71ec05c.execmd.exe

description	pid	process	target process
PID 1348 wrote to memory of 1400	1348	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 1348 wrote to memory of 1400	1348	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 1348 wrote to memory of 1400	1348	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 1348 wrote to memory of 1400	1348	354895bd5079cc205b265799b71ec05c.exe	cmd.exe
PID 1400 wrote to memory of 1732	1400	cmd.exe	taskkill.exe
PID 1400 wrote to memory of 1732	1400	cmd.exe	taskkill.exe
PID 1400 wrote to memory of 1732	1400	cmd.exe	taskkill.exe
PID 1400 wrote to memory of 1732	1400	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe
"C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "354895bd5079cc205b265799b71ec05c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\354895bd5079cc205b265799b71ec05c.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1400
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "354895bd5079cc205b265799b71ec05c.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1732

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/1348-55-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1348-56-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download