gcleaner | 1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2

General

Target

1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe
Size

285KB
MD5

10acd65ec9c330729fece0c2599c00d0
SHA1

4105ddce737ad9cccb4e4efa4a19c293ffbe1273
SHA256

1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2
SHA512

b0b1ba0afe2a2f70daecc2d278843f9259d60af9e7dae5f39ae90f6a97af4e77ff9a691fefc695edd4e3ed754ee46beb8f2500955e95de5febaa8fddb685e3b1
SSDEEP

6144:4L/Cq04Ol9gzQFZzhyEELZdTXc3ITFbmG8uQTdJpHXd:Y/h04Ol9g6hXEL7c4TFbmvhdJRd

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe

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
4740	1208	WerFault.exe	84
2868	1208	WerFault.exe	84
428	1208	WerFault.exe	84
2780	1208	WerFault.exe	84
4720	1208	WerFault.exe	84
2356	1208	WerFault.exe	84
4736	1208	WerFault.exe	84
4144	1208	WerFault.exe	84

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	1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.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
4776	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 4500	1208	1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe	111
PID 1208 wrote to memory of 4500	1208	1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe	111
PID 1208 wrote to memory of 4500	1208	1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe	111
PID 4500 wrote to memory of 4776	4500	cmd.exe	114
PID 4500 wrote to memory of 4776	4500	cmd.exe	114
PID 4500 wrote to memory of 4776	4500	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe
"C:\Users\Admin\AppData\Local\Temp\1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 748
  2⤵
  - Program crash
  PID:4740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 740
  2⤵
  - Program crash
  PID:2868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 740
  2⤵
  - Program crash
  PID:428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 812
  2⤵
  - Program crash
  PID:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 904
  2⤵
  - Program crash
  PID:4720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 980
  2⤵
  - Program crash
  PID:2356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 1420
  2⤵
  - Program crash
  PID:4736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4500
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "1625cfb597a6956694a20594cd25e382bb9c66a121978f9b48b8ad7d3e976cc2.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 1480
  2⤵
  - Program crash
  PID:4144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1208 -ip 1208
1⤵
PID:4584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1208 -ip 1208
1⤵
PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1208 -ip 1208
1⤵
PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1208 -ip 1208
1⤵
PID:1392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1208 -ip 1208
1⤵
PID:1084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1208 -ip 1208
1⤵
PID:1616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1208 -ip 1208
1⤵
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1208 -ip 1208
1⤵
PID:3164

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\B9AWTLKS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1208-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

Filesize
1024KB

Download
memory/1208-2-0x0000000002CD0000-0x0000000002CFD000-memory.dmp

Filesize
180KB

Download
memory/1208-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1208-8-0x0000000002D40000-0x0000000002E40000-memory.dmp

Filesize
1024KB

Download
memory/1208-9-0x0000000000400000-0x0000000002B67000-memory.dmp

Filesize
39.4MB

Download
memory/1208-11-0x0000000002CD0000-0x0000000002CFD000-memory.dmp

Filesize
180KB

Download
memory/1208-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1208-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1208-21-0x0000000000400000-0x0000000002B67000-memory.dmp

Filesize
39.4MB

Download

Analysis

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