gcleaner | cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328

General

Target

cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe
Size

1.8MB
MD5

819ebd4f3f552248bef6bb50332da732
SHA1

651b2f9f28ad27c6d1a1289bbd29d65f7fa811f9
SHA256

cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328
SHA512

cac820d548379566311ff90babd964eed03adaf5cb5f6d0baffa9701b0c44dbd9dfa106e2e0f0d68f40d428a751859d05e372ee231a0ada85d99be69280d8dde
SSDEEP

49152:+RBYx3M5gZDM7LeN9tBuYMoYpMyfPxUvT/0WzMiu0bN3:6B6CPkU1ayfPxUTjM52N

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__	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.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	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.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-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4768	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.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
2500	4768	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	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4768	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe
4768	cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe

C:\Users\Admin\AppData\Local\Temp\cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.exe
"C:\Users\Admin\AppData\Local\Temp\cf87202970d8178471d134316b9c6b2271c6e7f4e22e880783ace601bbb9d328.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:4768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 644
  2⤵
  - Program crash
  PID:2500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4768 -ip 4768
1⤵
PID:4508

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\DQ67RYHS\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4768-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4768-3-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-18-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4768-19-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-6-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-7-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-8-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-0-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4768-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/4768-4-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-21-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-1-0x0000000077074000-0x0000000077076000-memory.dmp

Filesize
8KB

Download
memory/4768-23-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-28-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-34-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-40-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download
memory/4768-16-0x0000000000400000-0x0000000000C4C000-memory.dmp

Filesize
8.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads