gcleaner | 11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57

General

Target

11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe
Size

397KB
MD5

f2ed62112a34067d971739425ae2a5ce
SHA1

cb105188bac8cd7dc49914678e35f843a2bb8862
SHA256

11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57
SHA512

2fffaf08cef53d5f9c53dc22b8c2a1edec5896c2abb4acc9a6410a449ef015323330c73a9fafeec6c13376b3cdb210f75013113203da947f0c55f81f31e91e58
SSDEEP

6144:U2I0tjaH3IifLQSITFrCvARkpQSlloN5cf3gFshGnXpt/:Ur0teYijQBCT2SUOesYn5

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
776	1436	WerFault.exe	83
4924	1436	WerFault.exe	83
2944	1436	WerFault.exe	83
4148	1436	WerFault.exe	83
1572	1436	WerFault.exe	83
5032	1436	WerFault.exe	83
4416	1436	WerFault.exe	83
4800	1436	WerFault.exe	83
4376	1436	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4384	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4384	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1436 wrote to memory of 4896	1436	11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe	112
PID 1436 wrote to memory of 4896	1436	11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe	112
PID 1436 wrote to memory of 4896	1436	11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe	112
PID 4896 wrote to memory of 4384	4896	cmd.exe	115
PID 4896 wrote to memory of 4384	4896	cmd.exe	115
PID 4896 wrote to memory of 4384	4896	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe
"C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 732
  2⤵
  - Program crash
  PID:776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 748
  2⤵
  - Program crash
  PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 792
  2⤵
  - Program crash
  PID:2944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 800
  2⤵
  - Program crash
  PID:4148
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 904
  2⤵
  - Program crash
  PID:1572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 980
  2⤵
  - Program crash
  PID:5032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 1064
  2⤵
  - Program crash
  PID:4416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 1344
  2⤵
  - Program crash
  PID:4800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "11fab15d61c9c949956a7da4e1aebfd8258cf5454f42b289dcf009527ba35e57.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 1308
  2⤵
  - Program crash
  PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1436 -ip 1436
1⤵
PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1436 -ip 1436
1⤵
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1436 -ip 1436
1⤵
PID:2172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1436 -ip 1436
1⤵
PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1436 -ip 1436
1⤵
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1436 -ip 1436
1⤵
PID:3296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1436 -ip 1436
1⤵
PID:2840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1436 -ip 1436
1⤵
PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1436 -ip 1436
1⤵
PID:1904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\951G8FD5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1436-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/1436-2-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/1436-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1436-7-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/1436-10-0x0000000002340000-0x000000000236D000-memory.dmp

Filesize
180KB

Download
memory/1436-9-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/1436-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1436-21-0x0000000000400000-0x00000000005F6000-memory.dmp

Filesize
2.0MB

Download
memory/1436-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing