gcleaner | 818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73

General

Target

818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
Size

375KB
MD5

18e6601dfa681939678501528d022eb0
SHA1

afb53ae7cfe4010a2d19dc5c4a29979a7115d605
SHA256

818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73
SHA512

3677c879e05ee2f297d977b37e790859d12ce47136396fb590baff745bae66a0a5f0a6998b854ada2249e81f6b352803ce05506c2a7268db9db6fc61633688dd
SSDEEP

6144:u2X9w3nkJpk9L9bhXLxFEay2RfJUL/FWlZV8A6nOCx6D4:u2N2ZbhXpyW0glX6nOb

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

Processes:

818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

Processes:

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

pid	pid_target	process	target process
4920	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
3416	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
2360	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
4808	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
880	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
2560	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
1788	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
2052	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
4460	1512	WerFault.exe	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe

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

Processes:

818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.execmd.exetaskkill.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.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

Processes:

taskkill.exe

pid process

844 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 844 taskkill.exe

pid	process
844	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	844	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.execmd.exe

description	pid	process	target process
PID 1512 wrote to memory of 3296	1512	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe	cmd.exe
PID 1512 wrote to memory of 3296	1512	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe	cmd.exe
PID 1512 wrote to memory of 3296	1512	818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe	cmd.exe
PID 3296 wrote to memory of 844	3296	cmd.exe	taskkill.exe
PID 3296 wrote to memory of 844	3296	cmd.exe	taskkill.exe
PID 3296 wrote to memory of 844	3296	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe
"C:\Users\Admin\AppData\Local\Temp\818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 744
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 752
  2⤵
  - Program crash
  PID:3416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 796
  2⤵
  - Program crash
  PID:2360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 836
  2⤵
  - Program crash
  PID:4808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 904
  2⤵
  - Program crash
  PID:880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 1008
  2⤵
  - Program crash
  PID:2560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 1404
  2⤵
  - Program crash
  PID:1788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3296
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "818903c23636af86c4d2d317108b0aff21fd264641442f7efd2c78c872ff8f73N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 1380
  2⤵
  - Program crash
  PID:2052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 1388
  2⤵
  - Program crash
  PID:4460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1512 -ip 1512
1⤵
PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1512 -ip 1512
1⤵
PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1512 -ip 1512
1⤵
PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1512 -ip 1512
1⤵
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1512 -ip 1512
1⤵
PID:972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1512 -ip 1512
1⤵
PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1512 -ip 1512
1⤵
PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1512 -ip 1512
1⤵
PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1512 -ip 1512
1⤵
PID:716

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\B9AWTLKS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1512-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/1512-2-0x0000000000740000-0x000000000076D000-memory.dmp

Filesize
180KB

Download
memory/1512-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1512-8-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/1512-10-0x0000000000400000-0x0000000000492000-memory.dmp

Filesize
584KB

Download
memory/1512-11-0x0000000000740000-0x000000000076D000-memory.dmp

Filesize
180KB

Download
memory/1512-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1512-21-0x0000000000400000-0x0000000000492000-memory.dmp

Filesize
584KB

Download
memory/1512-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads