gcleaner | 2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62

General

Target

2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe
Size

1.9MB
MD5

7442b0ad5a44f533f26b72223fb46c4c
SHA1

79b474d0f9a128e5ab191abb3196a54e18588634
SHA256

2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62
SHA512

ade2ff9b93b92b0b0521f05ccf97d577145951801aef2b397ab0bdaefc3185a3e8ce462b8be8c6dbbad569292fd8dae918aa2a79f5731188e62c3661f841e8b4
SSDEEP

49152:VMGESCHp8uiC6bzLIQdC68jdKd/3ETP0C6s8Yps:VVRopFV6jIXzjs9oasW

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__	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
15	4408	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.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	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Wine	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4408	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.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
2444	4408	WerFault.exe	83

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	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4408	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe
4408	2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe

C:\Users\Admin\AppData\Local\Temp\2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe
"C:\Users\Admin\AppData\Local\Temp\2bf4c29ed6ed320648489a948ccdd6cdd186fee526a43894ba6b9126ccdffc62.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Downloads MZ/PE file
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4408 -s 524
  2⤵
  - Program crash
  PID:2444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4408 -ip 4408
1⤵
PID:4796

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\0GUUC90F\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4408-15-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-20-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-3-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-4-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-6-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-7-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4408-0-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4408-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4408-18-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-21-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-1-0x0000000076F44000-0x0000000076F46000-memory.dmp

Filesize
8KB

Download
memory/4408-23-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-28-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-34-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-40-0x0000000000400000-0x0000000000C73000-memory.dmp

Filesize
8.4MB

Download
memory/4408-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads