gcleaner | dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5

General

Target

dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe
Size

399KB
MD5

3b48a1c694ac54a13dddd809ccc0c3f5
SHA1

55d7ea8f37ac8206f70fd8e2cc47395633abe495
SHA256

dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5
SHA512

d63406e20ae77bdad9c9b06d426db00386c7bc1e1af3b28fd12066e22090cafde130dc7fc78e17ada0ec2945ca224614710ce5af64bf9429684f7cbafb5afdc9
SSDEEP

12288:r5S6HYfKTG0981SYJZ3vjWOOGBaGhFCZ:rgtfYxMtJlvjWOOeI

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 7 IoCs

pid	pid_target	Process	procid_target
3344	3420	WerFault.exe	77
4616	3420	WerFault.exe	77
2876	3420	WerFault.exe	77
4472	3420	WerFault.exe	77
1408	3420	WerFault.exe	77
428	3420	WerFault.exe	77
3580	3420	WerFault.exe	77

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2288	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 2508	3420	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	93
PID 3420 wrote to memory of 2508	3420	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	93
PID 3420 wrote to memory of 2508	3420	dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe	93
PID 2508 wrote to memory of 2288	2508	cmd.exe	95
PID 2508 wrote to memory of 2288	2508	cmd.exe	95
PID 2508 wrote to memory of 2288	2508	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe
"C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 780
  2⤵
  - Program crash
  PID:3344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 812
  2⤵
  - Program crash
  PID:4616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 832
  2⤵
  - Program crash
  PID:2876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 872
  2⤵
  - Program crash
  PID:4472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 952
  2⤵
  - Program crash
  PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 960
  2⤵
  - Program crash
  PID:428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1384
  2⤵
  - Program crash
  PID:3580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "dc4fa85e31628b0d198397cf9c3b0c4d81a4a0a228d99ccfc00f2014c519f9b5.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3420 -ip 3420
1⤵
PID:2272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3420 -ip 3420
1⤵
PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3420 -ip 3420
1⤵
PID:960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3420 -ip 3420
1⤵
PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3420 -ip 3420
1⤵
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3420 -ip 3420
1⤵
PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3420 -ip 3420
1⤵
PID:1164

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\MF0NALEG\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3420-1-0x0000000000830000-0x0000000000930000-memory.dmp

Filesize
1024KB

Download
memory/3420-2-0x0000000002310000-0x000000000233D000-memory.dmp

Filesize
180KB

Download
memory/3420-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-8-0x0000000000830000-0x0000000000930000-memory.dmp

Filesize
1024KB

Download
memory/3420-10-0x0000000002310000-0x000000000233D000-memory.dmp

Filesize
180KB

Download
memory/3420-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-11-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/3420-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-21-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download

Analysis

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