gcleaner | 56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a

General

Target

56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe
Size

324KB
MD5

2bdcc33db4b78a0643c223ded3abb774
SHA1

f6eb3c842dbd88c27f743abf588b98f72b78781a
SHA256

56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a
SHA512

1e48eb233018024f98a0b58780fbb946f3034c84bba1b90be05cfb0767dfcc4d0b98be3df8bb4b61501e0378fd65a3ad4c867266261477d36e6929c7d4576d2f
SSDEEP

6144:YEDssGnMOOpnpemORqTxQCCTn1qZAyhygsZgJyr7ePRB5w/Me0Vdh1aQ:Y0sHMOOB8mIQxo4lxJi7GXrVdz

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

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
5832	3860	WerFault.exe	77
960	3860	WerFault.exe	77
2216	3860	WerFault.exe	77
4708	3860	WerFault.exe	77
4500	3860	WerFault.exe	77
2852	3860	WerFault.exe	77
932	3860	WerFault.exe	77
5804	3860	WerFault.exe	77
3188	3860	WerFault.exe	77
1540	3860	WerFault.exe	77
4384	3860	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	56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.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
3104	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3104	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 5016	3860	56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe	99
PID 3860 wrote to memory of 5016	3860	56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe	99
PID 3860 wrote to memory of 5016	3860	56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe	99
PID 5016 wrote to memory of 3104	5016	cmd.exe	102
PID 5016 wrote to memory of 3104	5016	cmd.exe	102
PID 5016 wrote to memory of 3104	5016	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe
"C:\Users\Admin\AppData\Local\Temp\56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 476
  2⤵
  - Program crash
  PID:5832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 500
  2⤵
  - Program crash
  PID:960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 780
  2⤵
  - Program crash
  PID:2216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 800
  2⤵
  - Program crash
  PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 828
  2⤵
  - Program crash
  PID:4500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 816
  2⤵
  - Program crash
  PID:2852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 960
  2⤵
  - Program crash
  PID:932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 1068
  2⤵
  - Program crash
  PID:5804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 1340
  2⤵
  - Program crash
  PID:3188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 1632
  2⤵
  - Program crash
  PID:1540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5016
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "56806e54f09b821f5ff46ddb07f375d6808c50d7d460ea7e5cbdb70e8da3738a.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 1584
  2⤵
  - Program crash
  PID:4384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3860 -ip 3860
1⤵
PID:3408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3860 -ip 3860
1⤵
PID:4856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3860 -ip 3860
1⤵
PID:888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3860 -ip 3860
1⤵
PID:1788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3860 -ip 3860
1⤵
PID:2780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3860 -ip 3860
1⤵
PID:1876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3860 -ip 3860
1⤵
PID:5800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3860 -ip 3860
1⤵
PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3860 -ip 3860
1⤵
PID:1520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 380 -p 3860 -ip 3860
1⤵
PID:4472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3860 -ip 3860
1⤵
PID:5436

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\01ME7Y5O\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3860-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/3860-2-0x00000000022F0000-0x000000000232B000-memory.dmp

Filesize
236KB

Download
memory/3860-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3860-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3860-13-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/3860-15-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3860-16-0x00000000022F0000-0x000000000232B000-memory.dmp

Filesize
236KB

Download
memory/3860-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3860-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3860-35-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing