gcleaner | 83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae

General

Target

83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe
Size

1.9MB
MD5

cab7af24073c5c1c62a2957dd5983c98
SHA1

a41a42e84999503cf76b04edefe3c37f87023285
SHA256

83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae
SHA512

ab369b7290203e5fbbaa67a84fcac6325d1460e5696a8d6c54595cf85a1e63b5fb513e5bc8bc5fdf17dce02431c2368a5faefeee131c879085a340844734c6e8
SSDEEP

49152:/4bMkF3zAefWvY4WxDwLPDCH/ixLCDTni2zfkwNMb:wQkF3zAeuvYhDy2H/iLCDTni2zu

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__	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.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	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.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-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1760	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.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
5004	1760	WerFault.exe	81

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	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1760	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe
1760	83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe

C:\Users\Admin\AppData\Local\Temp\83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.exe
"C:\Users\Admin\AppData\Local\Temp\83709123b921be43ef4f8bcab88738b7e3f6b810fb443da8f447a287fa5d86ae.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:1760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 632
  2⤵
  - Program crash
  PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1760 -ip 1760
1⤵
PID:2184

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P2UT3MS5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1760-4-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-6-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/1760-0-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-18-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-7-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1760-20-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-3-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/1760-15-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-1-0x0000000077E54000-0x0000000077E56000-memory.dmp

Filesize
8KB

Download
memory/1760-22-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-27-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-33-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-39-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/1760-40-0x0000000000401000-0x0000000000426000-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