gcleaner | b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409

General

Target

b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe
Size

4.0MB
MD5

249525037395d6920e22b0de46a6e40b
SHA1

4b292dc70f208962063d49189c54ab374522eacc
SHA256

b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409
SHA512

7b14bc796e1a8fda97f59633aa376ec7e6f9461039ac1512d7434e5d07594e712ca3aee61026a853c90bd81f0321f4690cf304c3980ae2db5e18fc6be5c9b38d
SSDEEP

98304:KsL8oNpRgDFaLiV9CEAU4oriL9Dyhpw8yKWdP+9Rt:KsLf3RgZCEAU404chxyhU9R

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__	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
17	3760	BitLockerToGo.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	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.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-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 396 set thread context of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89

System Location Discovery: System Language Discovery 1 TTPs 2 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	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe
396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89
PID 396 wrote to memory of 3760	396	b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe	89

C:\Users\Admin\AppData\Local\Temp\b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.exe
"C:\Users\Admin\AppData\Local\Temp\b37d1201897f2cbe8c5d11d0c41d435a2a35c28cbf2e9aa3777782574fa6b409.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
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:396
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Downloads MZ/PE file
  - System Location Discovery: System Language Discovery
  PID:3760

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

1

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\ZKC1FSM4\service[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/396-6-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-2-0x0000000000C71000-0x0000000000EAE000-memory.dmp

Filesize
2.2MB

Download
memory/396-3-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-4-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-5-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-0-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-18-0x0000000000C70000-0x0000000001732000-memory.dmp

Filesize
10.8MB

Download
memory/396-1-0x0000000077D84000-0x0000000077D86000-memory.dmp

Filesize
8KB

Download
memory/3760-7-0x0000000000690000-0x00000000006BF000-memory.dmp

Filesize
188KB

Download
memory/3760-12-0x0000000000690000-0x00000000006BF000-memory.dmp

Filesize
188KB

Download
memory/3760-9-0x0000000000690000-0x00000000006BF000-memory.dmp

Filesize
188KB

Download
memory/3760-16-0x0000000000690000-0x00000000006BF000-memory.dmp

Filesize
188KB

Download
memory/3760-22-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads