gcleaner | caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5

General

Target

caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe
Size

1.8MB
MD5

86c0bb0df528e915974fde75dd60f613
SHA1

4b664149aac5f36abf09a9db884808666437f6ea
SHA256

caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5
SHA512

e2b5f8ae099b02231e4d5847965eaa03b41ae5a01ab42b4d0c4191cd1a41811b120be0d61c093c91386034e39ec90895e722bce32c97e6472c3ae51c874f4476
SSDEEP

49152:VTL4Fkw4+fxjg0mjRakStRASAUnKzwHboIrCZsMPTq:d4Fkw4Yxjds18mQntfr2Pm

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__	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.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	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.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-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2096	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.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
1124	2096	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	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2096	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe
2096	caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe

C:\Users\Admin\AppData\Local\Temp\caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.exe
"C:\Users\Admin\AppData\Local\Temp\caa28b945b443adf3f53432b46679d5bab488dfa5c49869c5c4cd3c428e26fa5.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:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 532
  2⤵
  - Program crash
  PID:1124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2096 -ip 2096
1⤵
PID:2656

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P2UT3MS5\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2096-15-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-6-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-18-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2096-4-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-19-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-7-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-11-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2096-20-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-3-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-2-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download
memory/2096-0-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-21-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-1-0x0000000077014000-0x0000000077016000-memory.dmp

Filesize
8KB

Download
memory/2096-23-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-28-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-39-0x0000000000400000-0x0000000000C4B000-memory.dmp

Filesize
8.3MB

Download
memory/2096-41-0x0000000000401000-0x0000000000426000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads