gcleaner | 90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337

General

Target

90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe
Size

421KB
MD5

737d441486470c721bb84fdb6d174863
SHA1

02fcf8e828233330e31b5d697e1b470ae7c47e1b
SHA256

90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337
SHA512

bafadabda297f975121823b33cc9a1132e21c609d1c133a69492934d8b75b60f52b5f4edc005de1525b39b0f0a95f2a65b0b56e8b6235f1afd483d85c5a2e640
SSDEEP

6144:nkJgyXzgklgBJ1fvCkBViR0na98RWYsnc1/Iff0hW8VyHP6B:IgqlM1fvLViR0aWm4QRHi

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
3796	492	WerFault.exe	79
224	492	WerFault.exe	79
2424	492	WerFault.exe	79
4660	492	WerFault.exe	79
3252	492	WerFault.exe	79
4052	492	WerFault.exe	79
3848	492	WerFault.exe	79
4040	492	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	90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.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
3304	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 492 wrote to memory of 4584	492	90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe	97
PID 492 wrote to memory of 4584	492	90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe	97
PID 492 wrote to memory of 4584	492	90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe	97
PID 4584 wrote to memory of 3304	4584	cmd.exe	100
PID 4584 wrote to memory of 3304	4584	cmd.exe	100
PID 4584 wrote to memory of 3304	4584	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe
"C:\Users\Admin\AppData\Local\Temp\90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 764
  2⤵
  - Program crash
  PID:3796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 792
  2⤵
  - Program crash
  PID:224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 792
  2⤵
  - Program crash
  PID:2424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 864
  2⤵
  - Program crash
  PID:4660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 960
  2⤵
  - Program crash
  PID:3252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1084
  2⤵
  - Program crash
  PID:4052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1428
  2⤵
  - Program crash
  PID:3848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4584
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "90b72f3d8cca27b7667668bba38ffb01edcc46536e44625c38d3e7b62ce5b337.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1340
  2⤵
  - Program crash
  PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 492 -ip 492
1⤵
PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 492 -ip 492
1⤵
PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 492 -ip 492
1⤵
PID:1820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 492 -ip 492
1⤵
PID:704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 492 -ip 492
1⤵
PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 492 -ip 492
1⤵
PID:1416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 492 -ip 492
1⤵
PID:576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 492 -ip 492
1⤵
PID:3236

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\R7CDL9JE\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/492-1-0x0000000002620000-0x0000000002720000-memory.dmp

Filesize
1024KB

Download
memory/492-2-0x00000000042D0000-0x00000000042FD000-memory.dmp

Filesize
180KB

Download
memory/492-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/492-8-0x0000000002620000-0x0000000002720000-memory.dmp

Filesize
1024KB

Download
memory/492-10-0x00000000042D0000-0x00000000042FD000-memory.dmp

Filesize
180KB

Download
memory/492-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/492-11-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/492-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/492-21-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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