gcleaner | dac1de6b2503baa1e80b0c90555aa87b663cd6a8e57651c97aae775defbe8f29

Analysis

max time kernel
105s
max time network
128s
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, 15:01

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General

Target
0b58b97488ac17f7aa80c4581966782d.exe
Size 270KB
Sample230308-sdwlssaa68
SHA256 dac1de6b2503baa1e80b0c90555aa87b663cd6a8e57651c97aae775defbe8f29
MD5 0b58b97488ac17f7aa80c4581966782d
SHA1 d8fc50d1115b21fb3c02311c08ef651cd2808a2a
SHA512 a842310d98a7d9a54a98fd593febcbbad2f963e2a3599218ac5fdbb8c526b2f7ee6113cae3443386384533f81e02ba46883a2663b0fe0a38f5dde544231bc82c
SSDEEP 6144:ZSpkt9lfdyRqKoFrWvzpjhLY/qM8Q50/OP3Xp6Z/ofA:ZWkbpdyRqKvvzhhLkqM8lO5Io
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

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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	0b58b97488ac17f7aa80c4581966782d.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 9 IoCs

pid	pid_target	Process	procid_target
4704	1916	WerFault.exe	88
4228	1916	WerFault.exe	88
4708	1916	WerFault.exe	88
2384	1916	WerFault.exe	88
5080	1916	WerFault.exe	88
1060	1916	WerFault.exe	88
3348	1916	WerFault.exe	88
4128	1916	WerFault.exe	88
1560	1916	WerFault.exe	88

Kills process with taskkill 1 IoCs

evasion

pid	Process
3448	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1916	0b58b97488ac17f7aa80c4581966782d.exe
1916	0b58b97488ac17f7aa80c4581966782d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3448	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 3432	1916	0b58b97488ac17f7aa80c4581966782d.exe	112
PID 1916 wrote to memory of 3432	1916	0b58b97488ac17f7aa80c4581966782d.exe	112
PID 1916 wrote to memory of 3432	1916	0b58b97488ac17f7aa80c4581966782d.exe	112
PID 3432 wrote to memory of 3448	3432	cmd.exe	116
PID 3432 wrote to memory of 3448	3432	cmd.exe	116
PID 3432 wrote to memory of 3448	3432	cmd.exe	116

C:\Users\Admin\AppData\Local\Temp\0b58b97488ac17f7aa80c4581966782d.exe
"C:\Users\Admin\AppData\Local\Temp\0b58b97488ac17f7aa80c4581966782d.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 452
  2⤵
  - Program crash
  PID:4704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 764
  2⤵
  - Program crash
  PID:4228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 772
  2⤵
  - Program crash
  PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 796
  2⤵
  - Program crash
  PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 840
  2⤵
  - Program crash
  PID:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 808
  2⤵
  - Program crash
  PID:1060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 1004
  2⤵
  - Program crash
  PID:3348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 1372
  2⤵
  - Program crash
  PID:4128
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "0b58b97488ac17f7aa80c4581966782d.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1916 -s 492
  2⤵
  - Program crash
  PID:1560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1916 -ip 1916
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1916 -ip 1916
1⤵
PID:4260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1916 -ip 1916
1⤵
PID:1856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1916 -ip 1916
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1916 -ip 1916
1⤵
PID:1744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1916 -ip 1916
1⤵
PID:1472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1916 -ip 1916
1⤵
PID:3244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1916 -ip 1916
1⤵
PID:2156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1916 -ip 1916
1⤵
PID:4704

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/1916-134-0x0000000002050000-0x0000000002090000-memory.dmp

Download

memory/1916-136-0x0000000000400000-0x0000000000460000-memory.dmp

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