gcleaner | c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383

General

Target

c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe
Size

1.9MB
MD5

2e19a105ae94d5cfdba8166af58f7a3e
SHA1

398ec17fa4b03728c4c48c6d2e6f99e01ff78a63
SHA256

c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383
SHA512

181d6bec6fe7a93bc6ea1c5521977567a9565b1f7ef6b3a5cd8f8607ca27bdbca3c775ed6d5253ef1bb26227648d6a2d118c45b5e43af78a992135bf70b672ba
SSDEEP

49152:Y7lxqmNNdrwjy98ivFTAbrslcIDObJ51:qlz3Oymitkrsl9

Score

10^/10

gcleaner discovery evasion 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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.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	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4896	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.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
1896	4896	WerFault.exe	81

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	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4896	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe
4896	c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe

C:\Users\Admin\AppData\Local\Temp\c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.exe
"C:\Users\Admin\AppData\Local\Temp\c4a16bac6cdc5735e1bbb57c7f4c300e35a4c2f617c85585d17ac5a55a875383.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:4896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 640
  2⤵
  - Program crash
  PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4896 -ip 4896
1⤵
PID:4040

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\FQRZN8O7\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4896-15-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4896-3-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-4-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-18-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4896-7-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-2-0x0000000000401000-0x0000000000427000-memory.dmp

Filesize
152KB

Download
memory/4896-0-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-6-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-19-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-20-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-21-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-1-0x00000000777C4000-0x00000000777C6000-memory.dmp

Filesize
8KB

Download
memory/4896-23-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-28-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download
memory/4896-39-0x0000000000400000-0x0000000000C71000-memory.dmp

Filesize
8.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads