gcleaner | 5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e

General

Target

5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe
Size

1.9MB
MD5

73fe57d837bc7dd4e49723dd3ddfe530
SHA1

da3c131f15d30f9a842accdba796a27f9181d1c2
SHA256

5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e
SHA512

587c2d24f9d7318731800a4820baefceb27eaedf00bb82c794bd6b126f7c0848b07764895bb3a0260c7c0c63c32a3e0662ed3c3f08087ad86e93407566506876
SSDEEP

24576:dWPJaAZH5R6Da+ySk+PNTV1jvkM1fUWVy7CqgO5NQrKmTZXs5/EjV0wS1QG5qx:0PoAZeDapYnhsM107CqlQ5dXs5MR3y

Score

10^/10

gcleaner discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe

Downloads MZ/PE file

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	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2672	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.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
4600	2672	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	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2672	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe
2672	5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe

C:\Users\Admin\AppData\Local\Temp\5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe
"C:\Users\Admin\AppData\Local\Temp\5961668b3cc74e6b08fbd36f3d73f920124a12306ca8673a221f9c50980eeb8e.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 1592
  2⤵
  - Program crash
  PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2672 -ip 2672
1⤵
PID:3680

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2672-15-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-6-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2672-4-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-18-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-7-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2672-20-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-3-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2672-0-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-21-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-1-0x0000000077864000-0x0000000077866000-memory.dmp

Filesize
8KB

Download
memory/2672-27-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-33-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download
memory/2672-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2672-40-0x0000000000400000-0x0000000000C8E000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads