gcleaner | f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca

General

Target

f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe
Size

1.9MB
MD5

5a3f6aa1107d91bdc0430e2a0c1f4f26
SHA1

316139dd3edcd5af3a8afbd89e44ac10bb8e87e7
SHA256

f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca
SHA512

712f40770c3d645e54aac46ecb6cf51065ae30253e39e5fda861191d23aa2be2bb1d1e69043610f9ad22f2c86c532c759c2a4e06277b85c056e1c9f097c9143a
SSDEEP

24576:rP+AXJnenhDBV6oXTQ0pCPx2WOe7XKFdJ14xvKuvOy+EJvXWSNuMERtWYX4bmn2p:rP9JotV6ojQnYOyPDFEpXD4MEX3Cmni

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__	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.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	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.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-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4804	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.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
640	4804	WerFault.exe	84

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	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4804	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe
4804	f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe

C:\Users\Admin\AppData\Local\Temp\f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.exe
"C:\Users\Admin\AppData\Local\Temp\f43ded143a77002b6aa1b860aecca5b94e00a601d1db104d04423e3b5e0261ca.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:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4804 -s 636
  2⤵
  - Program crash
  PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4804 -ip 4804
1⤵
PID:3872

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\8R55UT9S\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4804-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4804-6-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-16-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-2-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4804-18-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4804-7-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-8-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-19-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-4-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-3-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-0-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-21-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-1-0x0000000077A14000-0x0000000077A16000-memory.dmp

Filesize
8KB

Download
memory/4804-23-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-28-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-34-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download
memory/4804-40-0x0000000000400000-0x0000000000C7B000-memory.dmp

Filesize
8.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads