gcleaner | 91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8

General

Target

91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe
Size

1.8MB
MD5

918942d177ee352a2b068478c01b5d9c
SHA1

26306778b7e78a2064017bfe5ea6e4fe0731a296
SHA256

91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8
SHA512

f42721bcfb6e23cbf6ff1ada4bd1b47c08317a9d7c7cd9c83ecc2c5c902f45de8341c58026df7375028623c2d494ca6462acc9e807fc276e6cf5e3fab5dc6f5e
SSDEEP

49152:SaeZ2QdZhiFcfOtjfz8DwVZqP3PH9oTMr3+db7g7pCP:SaesMZhiFcGtjL8DwVgP3PHKg3+EpC

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__	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
13	3612	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.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	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.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	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3612	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.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
4016	3612	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	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3612	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe
3612	91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe

C:\Users\Admin\AppData\Local\Temp\91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.exe
"C:\Users\Admin\AppData\Local\Temp\91535327d64da11676e20867407e3ff4c6e37314349dfa01cf3f138c378e3cd8.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:3612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3612 -s 524
  2⤵
  - Program crash
  PID:4016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3612 -ip 3612
1⤵
PID:1324

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

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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/3612-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3612-19-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-3-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-4-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-6-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-7-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-8-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-0-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3612-16-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-18-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/3612-21-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-1-0x0000000076F04000-0x0000000076F06000-memory.dmp

Filesize
8KB

Download
memory/3612-23-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-28-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-34-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-41-0x0000000000400000-0x0000000000C5B000-memory.dmp

Filesize
8.4MB

Download
memory/3612-42-0x0000000000401000-0x0000000000426000-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