gcleaner | 85620e4c5e9b3435dcca23a3a4b31b938544ef3f0f83db62cc2202db7642dadb

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
08-03-2023 11:27

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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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
1304	3896	WerFault.exe	85
4236	3896	WerFault.exe	85
3616	3896	WerFault.exe	85
4808	3896	WerFault.exe	85
3448	3896	WerFault.exe	85
1648	3896	WerFault.exe	85
3708	3896	WerFault.exe	85

Kills process with taskkill 1 IoCs

evasion

pid	Process
4692	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 2060	3896	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	98
PID 3896 wrote to memory of 2060	3896	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	98
PID 3896 wrote to memory of 2060	3896	9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe	98
PID 2060 wrote to memory of 4692	2060	cmd.exe	102
PID 2060 wrote to memory of 4692	2060	cmd.exe	102
PID 2060 wrote to memory of 4692	2060	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe
"C:\Users\Admin\AppData\Local\Temp\9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 744
  2⤵
  - Program crash
  PID:1304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 784
  2⤵
  - Program crash
  PID:4236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 916
  2⤵
  - Program crash
  PID:3616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 772
  2⤵
  - Program crash
  PID:4808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 772
  2⤵
  - Program crash
  PID:3448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 916
  2⤵
  - Program crash
  PID:1648
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9654564e437afa4a9cfb133343e379c8c3c69f53f5b81f4cf2425c9cb9a487f4.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 976
  2⤵
  - Program crash
  PID:3708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3896 -ip 3896
1⤵
PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3896 -ip 3896
1⤵
PID:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3896 -ip 3896
1⤵
PID:3312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3896 -ip 3896
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3896 -ip 3896
1⤵
PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3896 -ip 3896
1⤵
PID:3784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3896 -ip 3896
1⤵
PID:1808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3896-134-0x0000000002190000-0x00000000021D0000-memory.dmp

Filesize
256KB

Download
memory/3896-135-0x0000000000400000-0x000000000058B000-memory.dmp

Filesize
1.5MB

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