gcleaner | 6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3

General

Target

6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe
Size

1.8MB
MD5

8404367576ed48d0239d2f181bcd0494
SHA1

dfc419c7f945626329b763938891b7e200381683
SHA256

6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3
SHA512

c3691a4cc7d4c5a9cd748fdd4e68e0902ea56641b12163369da4d75c595ee6deea88d0350126ccb6ac8aeb3a404fb5af6d84c9a1439ec48de0b0ee88e52ba961
SSDEEP

49152:aFEIozuR0T1aT+Mbg8QtJcUHIhxTldEPDqMwqlGw:qEV31a3c8iFK6PDqY

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__	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.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	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3836	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.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
4692	3836	WerFault.exe	82

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	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3836	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe
3836	6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe

C:\Users\Admin\AppData\Local\Temp\6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.exe
"C:\Users\Admin\AppData\Local\Temp\6d681cfb0f78e47d4ccc838900eaff831203f329c2a31c46180681b4869cb9e3.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:3836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 1552
  2⤵
  - Program crash
  PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3836 -ip 3836
1⤵
PID:972

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\0BHOTC3C\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3836-15-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-6-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3836-4-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-18-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-7-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3836-20-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-3-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3836-0-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-21-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-1-0x00000000775F4000-0x00000000775F6000-memory.dmp

Filesize
8KB

Download
memory/3836-27-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-33-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-39-0x0000000000400000-0x0000000000C61000-memory.dmp

Filesize
8.4MB

Download
memory/3836-40-0x0000000000401000-0x0000000000426000-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