gcleaner | 442d7774797f498ef0afefda6a6f4482fc61dab1950cad7158e79569f5a3d063

General

Target

e9f3259c65410aeaf495ff2955029ed6.exe
Size

3.8MB
MD5

e9f3259c65410aeaf495ff2955029ed6
SHA1

e19cb0381709b796dcd6ca64ee3e5ef38fd0216d
SHA256

442d7774797f498ef0afefda6a6f4482fc61dab1950cad7158e79569f5a3d063
SHA512

dae85ddeaa83bc100117f1b6cea1a06094d613544ad0f2bd39ebd50f4850190262f3708596eafd1ddc429f58ce37a70269b737504c587823966226feae3e50ee
SSDEEP

98304:/euWR/qF4xZTMRW2OkGNFygVrZ9OWNKR:GuWB4WFbZ9OWNK

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__	e9f3259c65410aeaf495ff2955029ed6.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
27	4392	BitLockerToGo.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	e9f3259c65410aeaf495ff2955029ed6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e9f3259c65410aeaf495ff2955029ed6.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-1-5-21-1170604239-850860757-3112005715-1000\Software\Wine	e9f3259c65410aeaf495ff2955029ed6.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4736	e9f3259c65410aeaf495ff2955029ed6.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4736 set thread context of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92

System Location Discovery: System Language Discovery 1 TTPs 2 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	e9f3259c65410aeaf495ff2955029ed6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4736	e9f3259c65410aeaf495ff2955029ed6.exe
4736	e9f3259c65410aeaf495ff2955029ed6.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92
PID 4736 wrote to memory of 4392	4736	e9f3259c65410aeaf495ff2955029ed6.exe	92

C:\Users\Admin\AppData\Local\Temp\e9f3259c65410aeaf495ff2955029ed6.exe
"C:\Users\Admin\AppData\Local\Temp\e9f3259c65410aeaf495ff2955029ed6.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
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Downloads MZ/PE file
  - System Location Discovery: System Language Discovery
  PID:4392

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

1

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\07I069W9\service[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4392-7-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/4392-22-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4392-17-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/4392-9-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/4392-12-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/4736-3-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-6-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-5-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-4-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-0-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-18-0x0000000000780000-0x00000000011AA000-memory.dmp

Filesize
10.2MB

Download
memory/4736-2-0x0000000000781000-0x0000000000980000-memory.dmp

Filesize
2.0MB

Download
memory/4736-1-0x0000000077914000-0x0000000077916000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads