gcleaner | 993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf

General

Target

993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe
Size

284KB
MD5

da36342aa76df48b676a5a3787c53c15
SHA1

3595579569d10f9c1896ec8b0bb695087c137599
SHA256

993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf
SHA512

a0a47c16a37dde64a33e1eb9945401aca61dbac7cb5e2c29edcfbc685e4b1bdf696b7e06460b037ad74e6b11d66fecd5f6dadb222b2cf6b1f3e7dc66452061e2
SSDEEP

6144:5Lx6g2oXwn78/bfkWO/OpvtknVZoVlfGmuQTdJfJZ:Vx32oM78gWOslknroP+mhdJRZ

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
3480	1976	WerFault.exe	79
1852	1976	WerFault.exe	79
1952	1976	WerFault.exe	79
432	1976	WerFault.exe	79
4376	1976	WerFault.exe	79
412	1976	WerFault.exe	79
4036	1976	WerFault.exe	79
4948	1976	WerFault.exe	79

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	993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.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
660	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	660	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1200	1976	993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe	96
PID 1976 wrote to memory of 1200	1976	993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe	96
PID 1976 wrote to memory of 1200	1976	993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe	96
PID 1200 wrote to memory of 660	1200	cmd.exe	100
PID 1200 wrote to memory of 660	1200	cmd.exe	100
PID 1200 wrote to memory of 660	1200	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe
"C:\Users\Admin\AppData\Local\Temp\993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 772
  2⤵
  - Program crash
  PID:3480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 812
  2⤵
  - Program crash
  PID:1852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 772
  2⤵
  - Program crash
  PID:1952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 844
  2⤵
  - Program crash
  PID:432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 952
  2⤵
  - Program crash
  PID:4376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 1080
  2⤵
  - Program crash
  PID:412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 1428
  2⤵
  - Program crash
  PID:4036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "993f3fb15e0541e69324fb91c57c7a56faef6aed850a351aa06ea158a8d16bcf.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 1496
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 1976 -ip 1976
1⤵
PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 1976 -ip 1976
1⤵
PID:1040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1976 -ip 1976
1⤵
PID:1556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1976 -ip 1976
1⤵
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 1976 -ip 1976
1⤵
PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1976 -ip 1976
1⤵
PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1976 -ip 1976
1⤵
PID:4540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1976 -ip 1976
1⤵
PID:3572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\3EO0KN0W\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1976-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/1976-2-0x0000000002D50000-0x0000000002D7D000-memory.dmp

Filesize
180KB

Download
memory/1976-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1976-8-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/1976-9-0x0000000000400000-0x0000000002B67000-memory.dmp

Filesize
39.4MB

Download
memory/1976-11-0x0000000002D50000-0x0000000002D7D000-memory.dmp

Filesize
180KB

Download
memory/1976-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1976-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1976-21-0x0000000000400000-0x0000000002B67000-memory.dmp

Filesize
39.4MB

Download

Analysis

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