gcleaner | 08dc5b0fb0c2646f546f0af389c3c9934995f1cf6819a05c171db3eca242554d

General

Target

file.exe
Size

334KB
MD5

bdf38f58675cd77401c679df69c4a3e8
SHA1

298dac0330058235adec1bd5dd80c59f99c688af
SHA256

08dc5b0fb0c2646f546f0af389c3c9934995f1cf6819a05c171db3eca242554d
SHA512

fa056f5784c76252db3edff2f0ba060b2ac42fbb2c73fedaa076ba735b2f19c14b7feff69f6794f0108c98fe91764e4d45110459e87df68a072a78f212a363c1
SSDEEP

6144:aLBLLLswh/uDmd4hjDjjeFUm7wsiRBQIFYc5gujYW:aLB/LUDI4DX9m7w/1YW

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	file.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
2360	3692	WerFault.exe	81
4132	3692	WerFault.exe	81
932	3692	WerFault.exe	81
2388	3692	WerFault.exe	81
3524	3692	WerFault.exe	81
228	3692	WerFault.exe	81
8	3692	WerFault.exe	81
2576	3692	WerFault.exe	81
2100	3692	WerFault.exe	81
3432	3692	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	file.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
4416	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4416	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 4216	3692	file.exe	110
PID 3692 wrote to memory of 4216	3692	file.exe	110
PID 3692 wrote to memory of 4216	3692	file.exe	110
PID 4216 wrote to memory of 4416	4216	cmd.exe	114
PID 4216 wrote to memory of 4416	4216	cmd.exe	114
PID 4216 wrote to memory of 4416	4216	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 444
  2⤵
  - Program crash
  PID:2360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 764
  2⤵
  - Program crash
  PID:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 784
  2⤵
  - Program crash
  PID:932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 816
  2⤵
  - Program crash
  PID:2388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 856
  2⤵
  - Program crash
  PID:3524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 928
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 1004
  2⤵
  - Program crash
  PID:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 1140
  2⤵
  - Program crash
  PID:2576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 1712
  2⤵
  - Program crash
  PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4216
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 1800
  2⤵
  - Program crash
  PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3692 -ip 3692
1⤵
PID:540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3692 -ip 3692
1⤵
PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3692 -ip 3692
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3692 -ip 3692
1⤵
PID:748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3692 -ip 3692
1⤵
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3692 -ip 3692
1⤵
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3692 -ip 3692
1⤵
PID:2024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3692 -ip 3692
1⤵
PID:3140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3692 -ip 3692
1⤵
PID:4992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 3692 -ip 3692
1⤵
PID:5092

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\KDOTUZKP\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3692-14-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/3692-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3692-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3692-12-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3692-15-0x0000000002290000-0x00000000022CB000-memory.dmp

Filesize
236KB

Download
memory/3692-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3692-16-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3692-2-0x0000000002290000-0x00000000022CB000-memory.dmp

Filesize
236KB

Download
memory/3692-28-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/3692-32-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/3692-41-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3692-40-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download

Analysis

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