gcleaner | 83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67

General

Target

83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe
Size

1.9MB
MD5

2c8a5fea060265c4a888008a31c41a9f
SHA1

f39f5203a06859b2ec060799118716429cb69755
SHA256

83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67
SHA512

6ed694c27b605b6f82d39bfe75f110fc9c3e4e47364ba1be8b8a451a7c274aded6273c616ba99354addf362de5557695cca3558aa98b8a20f43923bb0cf6b51c
SSDEEP

49152:KYs2rGlafYVN+pXbIBRnWs1aDOLb0b6FEHunJz:56l82N+pX83nWs1ayLbkiEHo

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__	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.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	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.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-1-5-21-3350944739-639801879-157714471-1000\Software\Wine	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
5044	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.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
2072	5044	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	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5044	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe
5044	83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe

C:\Users\Admin\AppData\Local\Temp\83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.exe
"C:\Users\Admin\AppData\Local\Temp\83af939d7561cc9657b48bc91b33e353553415a64044fdc49ff784b7b53dce67.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:5044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 1544
  2⤵
  - Program crash
  PID:2072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5044 -ip 5044
1⤵
PID:3920

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\VKYZDMA5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/5044-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/5044-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/5044-18-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/5044-19-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-6-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-7-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-8-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-0-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/5044-3-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-4-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-21-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-1-0x0000000076F64000-0x0000000076F66000-memory.dmp

Filesize
8KB

Download
memory/5044-23-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-28-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-34-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-40-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download
memory/5044-15-0x0000000000400000-0x0000000000C72000-memory.dmp

Filesize
8.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads