gcleaner | 3e72cb8101b26e3e4cfdaab5795d98162b4110dfc183796a24c61bdafdd4edb6

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

C2

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

Processes:

4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.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

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
1028	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
1268	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
3488	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
3080	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
4336	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
4728	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
4028	736	WerFault.exe	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4696 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4696 taskkill.exe

pid	process
4696	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	4696	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.execmd.exe

description	pid	process	target process
PID 736 wrote to memory of 2948	736	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	cmd.exe
PID 736 wrote to memory of 2948	736	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	cmd.exe
PID 736 wrote to memory of 2948	736	4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe	cmd.exe
PID 2948 wrote to memory of 4696	2948	cmd.exe	taskkill.exe
PID 2948 wrote to memory of 4696	2948	cmd.exe	taskkill.exe
PID 2948 wrote to memory of 4696	2948	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
"C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 736
  2⤵
  - Program crash
  PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 808
  2⤵
  - Program crash
  PID:1268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 816
  2⤵
  - Program crash
  PID:3488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 820
  2⤵
  - Program crash
  PID:3080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 928
  2⤵
  - Program crash
  PID:4336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 964
  2⤵
  - Program crash
  PID:4728
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 1128
  2⤵
  - Program crash
  PID:4028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 736 -ip 736
1⤵
PID:3340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 736 -ip 736
1⤵
PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 736 -ip 736
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 736 -ip 736
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 736 -ip 736
1⤵
PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 736 -ip 736
1⤵
PID:4184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 736 -ip 736
1⤵
PID:2540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/736-134-0x0000000002D40000-0x0000000002D80000-memory.dmp

Filesize
256KB

Download
memory/736-135-0x0000000000400000-0x0000000002BCE000-memory.dmp

Filesize
39.8MB

Download
memory/736-136-0x0000000002D40000-0x0000000002D80000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads