gcleaner | 5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d

General

Target

5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe
Size

1.8MB
MD5

250a4e353a4c454a4e49259bdb4e924f
SHA1

f4f3255121c89b3d0c60d96ceb762a7a8aa0454a
SHA256

5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d
SHA512

0a7ab0edc9a72b38bcab13cd32101b6dd5aaa4f820d7edfd781baeb24ec385ca41ae864a97cf12db56b3da11d9f8201842aa099e6b4bcbaecc808fca2af50698
SSDEEP

49152:aL+znd3mxyKYlolYmMrf2HCYtWkdI1JsdIvfEY2:aSlWlYdf2H3dIj9vsY

Score

10^/10

gcleaner defense_evasion discovery loader

Malware Config

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
13	1264	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1264	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2540	1264	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 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	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1264	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe
1264	5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe

C:\Users\Admin\AppData\Local\Temp\5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe
"C:\Users\Admin\AppData\Local\Temp\5f5fe23e9e3d259a20bf5fc63a722c2b40784cdcf0d61b03c8937cb45d98f69d.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Downloads MZ/PE file
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1264 -s 1392
  2⤵
  - Program crash
  PID:2540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1264 -ip 1264
1⤵
PID:3516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DQ67RYHS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1264-3-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-18-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-4-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-0-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-6-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-7-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1264-15-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/1264-20-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/1264-1-0x00000000774E4000-0x00000000774E6000-memory.dmp

Filesize
8KB

Download
memory/1264-22-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-26-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-31-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-39-0x0000000000400000-0x0000000000C57000-memory.dmp

Filesize
8.3MB

Download
memory/1264-40-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads