gcleaner | 62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f

General

Target

62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.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
1192	1684	WerFault.exe	82
2728	1684	WerFault.exe	82
3388	1684	WerFault.exe	82
2012	1684	WerFault.exe	82
5008	1684	WerFault.exe	82
4812	1684	WerFault.exe	82
3348	1684	WerFault.exe	82
3036	1684	WerFault.exe	82
1864	1684	WerFault.exe	82
1872	1684	WerFault.exe	82
1804	1684	WerFault.exe	82

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	62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.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
3744	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 3896	1684	62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe	119
PID 1684 wrote to memory of 3896	1684	62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe	119
PID 1684 wrote to memory of 3896	1684	62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe	119
PID 3896 wrote to memory of 3744	3896	cmd.exe	123
PID 3896 wrote to memory of 3744	3896	cmd.exe	123
PID 3896 wrote to memory of 3744	3896	cmd.exe	123

C:\Users\Admin\AppData\Local\Temp\62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe
"C:\Users\Admin\AppData\Local\Temp\62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 452
  2⤵
  - Program crash
  PID:1192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 488
  2⤵
  - Program crash
  PID:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 748
  2⤵
  - Program crash
  PID:3388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 788
  2⤵
  - Program crash
  PID:2012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 780
  2⤵
  - Program crash
  PID:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 828
  2⤵
  - Program crash
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 912
  2⤵
  - Program crash
  PID:3348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 988
  2⤵
  - Program crash
  PID:3036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 1032
  2⤵
  - Program crash
  PID:1864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 1260
  2⤵
  - Program crash
  PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3896
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "62f8340b6223688006a84ae5d188b067cd9af43efd4e9179bef422939c56e38f.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 1556
  2⤵
  - Program crash
  PID:1804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1684 -ip 1684
1⤵
PID:2132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1684 -ip 1684
1⤵
PID:768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1684 -ip 1684
1⤵
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1684 -ip 1684
1⤵
PID:4968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1684 -ip 1684
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1684 -ip 1684
1⤵
PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1684 -ip 1684
1⤵
PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1684 -ip 1684
1⤵
PID:1288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1684 -ip 1684
1⤵
PID:1212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1684 -ip 1684
1⤵
PID:3116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1684 -ip 1684
1⤵
PID:1284

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\8M42AOWL\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1684-2-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/1684-1-0x0000000002490000-0x0000000002590000-memory.dmp

Filesize
1024KB

Download
memory/1684-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1684-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1684-13-0x0000000002490000-0x0000000002590000-memory.dmp

Filesize
1024KB

Download
memory/1684-16-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/1684-15-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/1684-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1684-29-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/1684-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1684-35-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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