gcleaner | 440abc5db3efed296663a525774c5d7eac845c042366a8ff5a02021b7f27e327

General

Target

quarantine/random_2.exe
Size

4.5MB
MD5

3a4289dc27c4a103a6710d371bc7f857
SHA1

6fce6d7d150cdc05e5e4d5baa579dbbab80993f2
SHA256

d287e0e7967728b65d0da4bf0df4b1694ca953784a09100d58bf97aaf80ecc25
SHA512

f18a2ac2bd6ee559028dc95a7fe4919e6eb421d7fc630f73e06ebb020fa364f5ecfb3a2c292d0742d5745967d8b949dd87ff6e7962d28a77f426cf33450ac37d
SSDEEP

98304:NWaOFNJFwpZU9G8YU1rPJ4PGK+hAdBAOBZ0w5HmjQhEHb:N0JFx9IU1rPypTr0w5HmjQW7

Score

10^/10

gcleaner defense_evasion discovery loader

Malware Config

Extracted

Family

gcleaner

C2

185.156.73.73

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_2.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
25	2728	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	random_2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random_2.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-1-5-21-100612193-3312047696-905266872-1000\Software\Wine	random_2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3408	random_2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3408 set thread context of 2728	3408	random_2.exe	96

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	random_2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3408	random_2.exe
3408	random_2.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96
PID 3408 wrote to memory of 2728	3408	random_2.exe	96

C:\Users\Admin\AppData\Local\Temp\quarantine\random_2.exe
"C:\Users\Admin\AppData\Local\Temp\quarantine\random_2.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:3408
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Downloads MZ/PE file
  - System Location Discovery: System Language Discovery
  PID:2728

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\O5FW3LII\service[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2728-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2728-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2728-39-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2728-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2728-17-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2728-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2728-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3408-5-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-13-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-2-0x0000000000B21000-0x0000000000DD7000-memory.dmp

Filesize
2.7MB

Download
memory/3408-6-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-0-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-7-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-1-0x0000000077264000-0x0000000077266000-memory.dmp

Filesize
8KB

Download
memory/3408-4-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download
memory/3408-3-0x0000000000B20000-0x0000000001760000-memory.dmp

Filesize
12.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads