gcleaner | c06eb19a32aee36330a68d6e3f18c7b96d1b650707aba0eedd317d6578b2d69a

General

Target

random.exe
Size

4.5MB
MD5

5b4e8d97fd7c28dda3d3570fcf5bcdf3
SHA1

c36cd2c8035030a8e3450ba7927fd223b731aae4
SHA256

c06eb19a32aee36330a68d6e3f18c7b96d1b650707aba0eedd317d6578b2d69a
SHA512

b8b49d5d68e830d87b033b3e91b9fee646958bbfa3455219f18b27eba1794c68fb6ab11390cf1c11ccd386da28bb03c32c8d5211eb57bebf5e1900c4b9582704
SSDEEP

98304:G5yDRdS7Fe95lENja89Y+1KVmcrzZFgCG1b5:G5yFEilENjA+1c3rQ

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__	random.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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.exe

Executes dropped EXE 1 IoCs

pid	Process
1648	svchost015.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-1-5-21-3920955164-3782810283-1225622749-1000\Software\Wine	random.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
5760	random.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5760 set thread context of 1648	5760	random.exe	91

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	svchost015.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	random.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5760	random.exe
5760	random.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91
PID 5760 wrote to memory of 1648	5760	random.exe	91

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\random.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:5760
- C:\Users\Admin\AppData\Local\Temp\svchost015.exe
  "C:\Users\Admin\AppData\Local\Temp\random.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1648

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\Temp\svchost015.exe

Filesize
2.9MB

MD5
b826dd92d78ea2526e465a34324ebeea

SHA1
bf8a0093acfd2eb93c102e1a5745fb080575372e

SHA256
7824b50acdd144764dac7445a4067b35cf0fef619e451045ab6c1f54f5653a5b

SHA512
1ac4b731b9b31cabf3b1c43aee37206aee5326c8e786abe2ab38e031633b778f97f2d6545cf745c3066f3bd47b7aaf2ded2f9955475428100eaf271dd9aeef17

Download Submit
memory/1648-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1648-20-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/5760-2-0x0000000000401000-0x0000000000449000-memory.dmp

Filesize
288KB

Download
memory/5760-3-0x0000000000400000-0x0000000000E0E000-memory.dmp

Filesize
10.1MB

Download
memory/5760-4-0x0000000000400000-0x0000000000E0E000-memory.dmp

Filesize
10.1MB

Download
memory/5760-1-0x00000000775C4000-0x00000000775C6000-memory.dmp

Filesize
8KB

Download
memory/5760-12-0x0000000000400000-0x0000000000E0E000-memory.dmp

Filesize
10.1MB

Download
memory/5760-0-0x0000000000400000-0x0000000000E0E000-memory.dmp

Filesize
10.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads