gcleaner | 62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f

General

Target

Trojan.Win32.GCleaner.WRA.exe
Size

422KB
MD5

5c5a20e1a60cf7ac12eec60628816cd0
SHA1

bdbcdbc93adb5aef38a45b387efcb01fda84a6f0
SHA256

62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f
SHA512

272bc3ff46f2eba1d54b5fd29f3998b86e9499fcf8e4eef752274d7caa7ce756ace1476564f9c939df00a7fea996273080d9442bf456b63972a282bf04ac3b92
SSDEEP

6144:pEg94Xwz671m1H2PwYjsfc2skZg1Y7DgVCo6ub0jM47bsHP6B:f9o71mMRf2NZg1YSNZ0jVnsHi

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	Trojan.Win32.GCleaner.WRA.exe

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

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
5064	1456	WerFault.exe	81
4512	1456	WerFault.exe	81
1988	1456	WerFault.exe	81
4360	1456	WerFault.exe	81
964	1456	WerFault.exe	81
1872	1456	WerFault.exe	81
1944	1456	WerFault.exe	81
2952	1456	WerFault.exe	81
4816	1456	WerFault.exe	81
3064	1456	WerFault.exe	81
3480	1456	WerFault.exe	81

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	Trojan.Win32.GCleaner.WRA.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
1588	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 892	1456	Trojan.Win32.GCleaner.WRA.exe	111
PID 1456 wrote to memory of 892	1456	Trojan.Win32.GCleaner.WRA.exe	111
PID 1456 wrote to memory of 892	1456	Trojan.Win32.GCleaner.WRA.exe	111
PID 892 wrote to memory of 1588	892	cmd.exe	115
PID 892 wrote to memory of 1588	892	cmd.exe	115
PID 892 wrote to memory of 1588	892	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.GCleaner.WRA.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.GCleaner.WRA.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 444
  2⤵
  - Program crash
  PID:5064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 480
  2⤵
  - Program crash
  PID:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 756
  2⤵
  - Program crash
  PID:1988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 772
  2⤵
  - Program crash
  PID:4360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 792
  2⤵
  - Program crash
  PID:964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 820
  2⤵
  - Program crash
  PID:1872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 912
  2⤵
  - Program crash
  PID:1944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 1016
  2⤵
  - Program crash
  PID:2952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 1032
  2⤵
  - Program crash
  PID:4816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 1564
  2⤵
  - Program crash
  PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "Trojan.Win32.GCleaner.WRA.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\Trojan.Win32.GCleaner.WRA.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:892
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "Trojan.Win32.GCleaner.WRA.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 1292
  2⤵
  - Program crash
  PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1456 -ip 1456
1⤵
PID:4020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1456 -ip 1456
1⤵
PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 1456 -ip 1456
1⤵
PID:3604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1456 -ip 1456
1⤵
PID:2164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1456 -ip 1456
1⤵
PID:872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1456 -ip 1456
1⤵
PID:2564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1456 -ip 1456
1⤵
PID:1248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1456 -ip 1456
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1456 -ip 1456
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1456 -ip 1456
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 1456 -ip 1456
1⤵
PID:532

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VNN58CU3\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1456-2-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/1456-1-0x00000000026F0000-0x00000000027F0000-memory.dmp

Filesize
1024KB

Download
memory/1456-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1456-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1456-13-0x00000000026F0000-0x00000000027F0000-memory.dmp

Filesize
1024KB

Download
memory/1456-15-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/1456-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1456-16-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/1456-29-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/1456-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1456-35-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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