gcleaner | f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea

General

Target

f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
Size

422KB
MD5

d8f063d207f214e0ebbefcdadf6d9ba0
SHA1

11a85940ebc9713c6f458d8cd2d47711d45a93af
SHA256

f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea
SHA512

f92cc4c02411bfa26986c049ace12ffbb0f88b896ab98fecc84ed943ea21c558db78abfeab8928e5d6b115e76cebaca2c8624bd2724964393509e90e564f5efd
SSDEEP

6144:DjXMODAMsTy9X2WKyyr1BE5EMvOa7XHf7fKbDJfq6U+t:DLMODAxTqKyyrYXFbHf7eDJJ

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

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
5004	2136	WerFault.exe	80
3424	2136	WerFault.exe	80
2620	2136	WerFault.exe	80
2944	2136	WerFault.exe	80
3128	2136	WerFault.exe	80
3548	2136	WerFault.exe	80
2680	2136	WerFault.exe	80
4800	2136	WerFault.exe	80
912	2136	WerFault.exe	80
3428	2136	WerFault.exe	80
1768	2136	WerFault.exe	80
680	2136	WerFault.exe	80

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	f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1020	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1020	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2260	2136	f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe	100
PID 2136 wrote to memory of 2260	2136	f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe	100
PID 2136 wrote to memory of 2260	2136	f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe	100
PID 2260 wrote to memory of 1020	2260	cmd.exe	102
PID 2260 wrote to memory of 1020	2260	cmd.exe	102
PID 2260 wrote to memory of 1020	2260	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe
"C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 480
  2⤵
  - Program crash
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 796
  2⤵
  - Program crash
  PID:3424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 836
  2⤵
  - Program crash
  PID:2620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 796
  2⤵
  - Program crash
  PID:2944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 816
  2⤵
  - Program crash
  PID:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 976
  2⤵
  - Program crash
  PID:3548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1088
  2⤵
  - Program crash
  PID:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1388
  2⤵
  - Program crash
  PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1648
  2⤵
  - Program crash
  PID:912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f2d86b122f7f55d1745af8c55de2907aa2e4b602a78d28ccdcd0b9cc9be6ccea.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 488
  2⤵
  - Program crash
  PID:3428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1696
  2⤵
  - Program crash
  PID:1768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 1616
  2⤵
  - Program crash
  PID:680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2136 -ip 2136
1⤵
PID:2384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2136 -ip 2136
1⤵
PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2136 -ip 2136
1⤵
PID:3912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2136 -ip 2136
1⤵
PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2136 -ip 2136
1⤵
PID:2700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2136 -ip 2136
1⤵
PID:1144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2136 -ip 2136
1⤵
PID:720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2136 -ip 2136
1⤵
PID:2228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2136 -ip 2136
1⤵
PID:784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2136 -ip 2136
1⤵
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2136 -ip 2136
1⤵
PID:4476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2136 -ip 2136
1⤵
PID:3448

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\JL3S1NU9\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2136-1-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download
memory/2136-2-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/2136-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2136-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2136-13-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download
memory/2136-15-0x0000000002440000-0x000000000247C000-memory.dmp

Filesize
240KB

Download
memory/2136-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2136-16-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2136-29-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2136-35-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2136-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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