gcleaner | d2978cf015e612a06069d724fa93a8d398eb79c1d276fafd74aa7d0b4d88835d

General

Target

random.exe
Size

4.0MB
MD5

6830a67f26a493032170a92a85cecd40
SHA1

5e39c0ed03aa07922d74fe2bf36aed4d4c9b5d54
SHA256

d2978cf015e612a06069d724fa93a8d398eb79c1d276fafd74aa7d0b4d88835d
SHA512

4a02a6611ab6f4a5b5eb0ec0698fe2d3e8c54c4f119cf04499331fef5730d8a46a331add32710b156e8aaa36d2be74ba1a8ef47b3b7154e7b7a3dfac544d0d99
SSDEEP

49152:FvLURhh5foXXpiO/1xVW/oDEIfiCUqlgPcbDcP4E5PNUwIocWMn/ePFDN+6XaH:FvKCXXpi6DhHUCgqDIFPCw15MmPFDov

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__	random.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
6	2596	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	random.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	random.exe

Executes dropped EXE 1 IoCs

pid	Process
444	N5Mg3bg1LDTH.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	random.exe

Loads dropped DLL 1 IoCs

pid	Process
2596	BitLockerToGo.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2704	random.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2704 set thread context of 2596	2704	random.exe	30

System Location Discovery: System Language Discovery 1 TTPs 3 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	N5Mg3bg1LDTH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	random.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BitLockerToGo.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2704	random.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2704 wrote to memory of 2596	2704	random.exe	30
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33
PID 2596 wrote to memory of 444	2596	BitLockerToGo.exe	33

C:\Users\Admin\AppData\Local\Temp\random.exe
"C:\Users\Admin\AppData\Local\Temp\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:2704
- C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe
  "C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe"
  2⤵
  - Downloads MZ/PE file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Users\Admin\AppData\Roaming\Ox6NR\N5Mg3bg1LDTH.exe
    "C:\Users\Admin\AppData\Roaming\Ox6NR\N5Mg3bg1LDTH.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:444

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

\Users\Admin\AppData\Roaming\Ox6NR\N5Mg3bg1LDTH.exe

Filesize
3.3MB

MD5
b4e73e595d16f0f8d92f227b770d478a

SHA1
59f506b90a3aacfde075e32462c7db6751df15d5

SHA256
967c6eeb834fbbd6ba93b5a0c998a5c55c595f58fe36e1ae8a6de2c3ec735716

SHA512
7aaa2b3d6ce26e4f2c331b4aafb472dcd339f81ddee4dab5dcddcd926c7bc87a06fed77adc18d6c69d35a384efac51c174d20d9731cedd78aa3dfc000cce2efd

Download Submit
memory/444-36-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/444-35-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2596-24-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2596-21-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2596-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2596-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2596-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2704-10-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-7-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-11-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-12-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-9-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-8-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-14-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-0-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-5-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-6-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-4-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-3-0x0000000000C30000-0x0000000001705000-memory.dmp

Filesize
10.8MB

Download
memory/2704-2-0x0000000000C31000-0x0000000000E65000-memory.dmp

Filesize
2.2MB

Download
memory/2704-1-0x0000000077660000-0x0000000077662000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads