gcleaner | 633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4

General

Target

633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe
Size

1.9MB
MD5

c4d5a305d2a90b39059a30dbd2310107
SHA1

9a3194e8c19fe6de03623075550775be623a786c
SHA256

633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4
SHA512

ebbf621ed618eaa3cb0944b3d26f920382e33557cadc5d6b8bf825ded5041ab041b40a6e7f9e26329f5f6a3816e8908a2ec1272d4e375830b6851796ee2bfd8a
SSDEEP

49152:N6AywSAjpJAR7CVVyECU3SWzbe79RB3/u7cY:N6AQAjAeV7LvMzJ

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__	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
13	4324	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.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\VideoBiosVersion	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Wine	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4324	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.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
4068	4324	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	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4324	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe
4324	633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe

C:\Users\Admin\AppData\Local\Temp\633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.exe
"C:\Users\Admin\AppData\Local\Temp\633fa2a9a7898aa8b4820c77e04c8b66c68dd9da0b9214a9e6de478b5c1534e4.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:4324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1348
  2⤵
  - Program crash
  PID:4068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4324 -ip 4324
1⤵
PID:3884

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6IJLDY7V\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4324-15-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-18-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-3-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-4-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-6-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-7-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4324-0-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4324-20-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4324-21-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-1-0x0000000077D54000-0x0000000077D56000-memory.dmp

Filesize
8KB

Download
memory/4324-26-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-31-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-39-0x0000000000400000-0x0000000000C63000-memory.dmp

Filesize
8.4MB

Download
memory/4324-40-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads