gcleaner | 7d020d703679b4f2654e61f3f5a636370735b7c669553cf3f03fea60b29c9031

General

Target

QCFBH_random.exe
Size

4.0MB
MD5

fee7300cd6de9ce505a0f7fcac4dc9aa
SHA1

3ee2596e67218c66ce05075c991f6083776e1983
SHA256

7d020d703679b4f2654e61f3f5a636370735b7c669553cf3f03fea60b29c9031
SHA512

915520e140f0ab66719db01fa34f5f32bedcf0bcc86e5de76f81c9b33e72635aaf861bb2b8af053aaf8cec14378c93e51e37eb71cf27e79f598c84b8ab706d52
SSDEEP

98304:z+kjrphuUAlKyTFPzGRI/tgndh4BsDluSI3ZZwll:z+kjrruUAYRI/tgndv43ZKD

Score

10^/10

gcleaner defense_evasion discovery loader

Malware Config

Extracted

Family

gcleaner

C2

185.156.73.73

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__	QCFBH_random.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
4	2736	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	QCFBH_random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	QCFBH_random.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	QCFBH_random.exe

Loads dropped DLL 1 IoCs

pid	Process
2736	BitLockerToGo.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2132	QCFBH_random.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2132 set thread context of 2736	2132	QCFBH_random.exe	31

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	QCFBH_random.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2132	QCFBH_random.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31
PID 2132 wrote to memory of 2736	2132	QCFBH_random.exe	31

C:\Users\Admin\AppData\Local\Temp\QCFBH_random.exe
"C:\Users\Admin\AppData\Local\Temp\QCFBH_random.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:2132
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Downloads MZ/PE file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2736

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Q0WBLVJY\service[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
\Users\Admin\AppData\Local\Temp\E4w2fGetzGefefe7wD\Y-Cleaner.exe

Filesize
987KB

MD5
f49d1aaae28b92052e997480c504aa3b

SHA1
a422f6403847405cee6068f3394bb151d8591fb5

SHA256
81e31780a5f2078284b011c720261797eb8dd85e1b95a657dbce7ac31e9df1f0

SHA512
41f715eea031fd8d7d3a22d88e0199277db2f86be73f830819288c0f0665e81a314be6d356fdc66069cb3f2abf0dd02aaa49ac3732f3f44a533fcec0dfd6f773

Download Submit
memory/2132-6-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-3-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-4-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-5-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-2-0x00000000003F1000-0x000000000062E000-memory.dmp

Filesize
2.2MB

Download
memory/2132-7-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-8-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-9-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-0-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-15-0x00000000003F0000-0x0000000000EC4000-memory.dmp

Filesize
10.8MB

Download
memory/2132-1-0x0000000077B10000-0x0000000077B12000-memory.dmp

Filesize
8KB

Download
memory/2736-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-19-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2736-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-42-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2736-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads