gcleaner | b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443

General

Target

b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe
Size

1.9MB
MD5

82d1397fb388fe6e4b7c66b0ae4bdbe4
SHA1

d979b5399d577b53b63b428c4a35abd30d6cc9de
SHA256

b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443
SHA512

47de07a2595067569a1ded7dd330f81817334d9442997cf25af977ecac04df5827d4475145cca0f8cf457002d147bed789cc2fc24d275fcff129d14a41b0531a
SSDEEP

24576:mIPfh5ny0qcJlPZ9zeoaIa8OtKCzgqf7K2GWvFj4O3VOSk7+FXSeWHG4c10VADA7:mafh5YiEoaVOqf7GsBxreHGU+n8I4+X

Score

10^/10

gcleaner discovery evasion loader

Malware Config

Extracted

Family

gcleaner

C2

92.63.197.221

45.91.200.135

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__	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.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	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4044	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4044	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe
4044	b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe

C:\Users\Admin\AppData\Local\Temp\b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.exe
"C:\Users\Admin\AppData\Local\Temp\b3bab1d09ce9738f8bcf2c838086eaf628715df4fe99ef26c7c85b6e9b9a6443.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:4044

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\DQ67RYHS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4044-18-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4044-29-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-3-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-4-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-6-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-7-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4044-19-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-42-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-2-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4044-15-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-1-0x0000000077784000-0x0000000077786000-memory.dmp

Filesize
8KB

Download
memory/4044-22-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-23-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-26-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-27-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-28-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-0-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-33-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download
memory/4044-17-0x0000000000400000-0x0000000000C68000-memory.dmp

Filesize
8.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads