gcleaner | 89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d

General

Target

89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe
Size

388KB
MD5

9548719d7d1b65914203c6e6646b963f
SHA1

efd5a68c55cb7f35150934a684446eefca3b32e4
SHA256

89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d
SHA512

7756a2c28670a796eac5fb8bb84bda5e7a75c87afd8740b9f82390d4d086dd2147ce59bac161dfe3a573b0bfd1cd5dfb83b2fdcc482b0299eab4b650448662a0
SSDEEP

6144:oe3O2plnitPBRTSOim1C++G539t8FphnakM9Bf:ouFzitPHTSOd1C+l6ha

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3200	3188	WerFault.exe	82
4892	3188	WerFault.exe	82
1000	3188	WerFault.exe	82
4788	3188	WerFault.exe	82
756	3188	WerFault.exe	82
1300	3188	WerFault.exe	82
4752	3188	WerFault.exe	82
3484	3188	WerFault.exe	82
264	3188	WerFault.exe	82
224	3188	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	89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.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
1832	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 4128	3188	89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe	115
PID 3188 wrote to memory of 4128	3188	89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe	115
PID 3188 wrote to memory of 4128	3188	89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe	115
PID 4128 wrote to memory of 1832	4128	cmd.exe	118
PID 4128 wrote to memory of 1832	4128	cmd.exe	118
PID 4128 wrote to memory of 1832	4128	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe
"C:\Users\Admin\AppData\Local\Temp\89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 440
  2⤵
  - Program crash
  PID:3200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 756
  2⤵
  - Program crash
  PID:4892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 784
  2⤵
  - Program crash
  PID:1000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 784
  2⤵
  - Program crash
  PID:4788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 836
  2⤵
  - Program crash
  PID:756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 928
  2⤵
  - Program crash
  PID:1300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 932
  2⤵
  - Program crash
  PID:4752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 1072
  2⤵
  - Program crash
  PID:3484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 1568
  2⤵
  - Program crash
  PID:264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "89d8c202b193c0876b5972ec562f5d99aa451ed8e1fd7d63eda75b6ccc23f28d.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 516
  2⤵
  - Program crash
  PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3188 -ip 3188
1⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3188 -ip 3188
1⤵
PID:1320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3188 -ip 3188
1⤵
PID:4048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3188 -ip 3188
1⤵
PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3188 -ip 3188
1⤵
PID:5064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3188 -ip 3188
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3188 -ip 3188
1⤵
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3188 -ip 3188
1⤵
PID:4188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3188 -ip 3188
1⤵
PID:1096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3188 -ip 3188
1⤵
PID:4472

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\BOIFDBOU\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3188-1-0x00000000025E0000-0x00000000026E0000-memory.dmp

Filesize
1024KB

Download
memory/3188-2-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/3188-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3188-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3188-13-0x00000000025E0000-0x00000000026E0000-memory.dmp

Filesize
1024KB

Download
memory/3188-16-0x00000000041D0000-0x000000000420B000-memory.dmp

Filesize
236KB

Download
memory/3188-15-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download
memory/3188-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3188-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3188-35-0x0000000000400000-0x000000000247A000-memory.dmp

Filesize
32.5MB

Download

Analysis

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