gcleaner | 3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cec

General

Target

3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe
Size

289KB
MD5

3bfaa7ea61d78e24b664efca615806d0
SHA1

a2a388d2123366c81bcf672d2954a970fbeb8661
SHA256

3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cec
SHA512

7b5add3751ac8d8510cd4b7aca2bb97e6d37a5c79f75e3fc44e92d18fb0a8dcb98ae27124fafe001026bf4d853c6474744a04302b62e0d852ab10180e5ce7810
SSDEEP

3072:4aXmGh/PLQfAwzlucGYXuA8bOmVjWE1wilOJdfqFkNyl5pXoblWkwrq+AZ/XR:bXdh/DnwhlNEbOmVjGQMFlWkwWH

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

Processes:

3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4712 3244 WerFault.exe 3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe

pid	pid_target	process	target process
4712	3244	WerFault.exe	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe

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

Processes:

taskkill.exe3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

5088 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 5088 taskkill.exe

pid	process
5088	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	5088	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.execmd.exe

description	pid	process	target process
PID 3244 wrote to memory of 4884	3244	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe	cmd.exe
PID 3244 wrote to memory of 4884	3244	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe	cmd.exe
PID 3244 wrote to memory of 4884	3244	3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe	cmd.exe
PID 4884 wrote to memory of 5088	4884	cmd.exe	taskkill.exe
PID 4884 wrote to memory of 5088	4884	cmd.exe	taskkill.exe
PID 4884 wrote to memory of 5088	4884	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe
"C:\Users\Admin\AppData\Local\Temp\3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3244

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe" & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "3f73c454fbd23127c33404de97db689f443fd3a959a66ebd62138e8d2ebc5cecN.exe" /f
3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:5088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 1256
2⤵
- Program crash
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3244 -ip 3244
1⤵
PID:4668

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\V4KZV1MD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3244-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/3244-2-0x00000000005D0000-0x00000000005FD000-memory.dmp

Filesize
180KB

Download
memory/3244-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3244-9-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/3244-12-0x00000000005D0000-0x00000000005FD000-memory.dmp

Filesize
180KB

Download
memory/3244-11-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3244-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3244-21-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3244-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads