gcleaner | 4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3

General

Target

4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe
Size

1.9MB
MD5

bfd5c6ef5c203d1422c9672efd314def
SHA1

6673c44430bc4880e9975868eb44e5e9a69cd0a6
SHA256

4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3
SHA512

52de7448b808dd479c0d03e3f02b6ca6e198e70aa4ee159e6669eb48af05d2df1eefae3a9085c767d4b822f14b0f0209e1418e083af927f848256be06219e67c
SSDEEP

49152:uhiw8YIFjvLYl/ypt10r7LaPHblrrHM0+cg:0X8YIFj8i4LaPCFcg

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__	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.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	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.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	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4936	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.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
1244	4936	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	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4936	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe
4936	4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe

C:\Users\Admin\AppData\Local\Temp\4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.exe
"C:\Users\Admin\AppData\Local\Temp\4ab95ea452e96d4da80d28b999f5bf4d93453f45b2d270d962e3389f7c0b9ee3.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:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 1308
  2⤵
  - Program crash
  PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4936 -ip 4936
1⤵
PID:1500

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\6IJLDY7V\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4936-3-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-18-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-4-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-0-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-6-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-7-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4936-15-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4936-20-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-17-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4936-1-0x0000000077C24000-0x0000000077C26000-memory.dmp

Filesize
8KB

Download
memory/4936-22-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-26-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-31-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download
memory/4936-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4936-40-0x0000000000400000-0x0000000000C74000-memory.dmp

Filesize
8.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads