3ee8c079419e1817b557d8ca1b61be3ab2046d0f384bdfafefe2a07bc2c58629

General

Target

c255d8e51b1bbe3020a80b176e59c020N.exe
Size

500KB
MD5

c255d8e51b1bbe3020a80b176e59c020
SHA1

764795f7b7ca93918a2c532dae7558a5b85869a9
SHA256

3ee8c079419e1817b557d8ca1b61be3ab2046d0f384bdfafefe2a07bc2c58629
SHA512

dd41c71a8f2c9f0af7662f3d031aa313b93b8f9532033b324eec717488098b7cf070e69b06bb28aa5207e235e0802e313bafab323501145f85eca80a518f2030
SSDEEP

12288:61q6Mn+dPqFKW0WsG7SmNOWxsJCT1gpAc:61hMn+4FlxsqS761gpt

Score

9^/10

evasion

Malware Config

Signatures

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__	c255d8e51b1bbe3020a80b176e59c020N.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation	c255d8e51b1bbe3020a80b176e59c020N.exe

Executes dropped EXE 1 IoCs

pid	Process
3828	s557.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	s557.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s557.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	s557.exe
File created	C:\Windows\assembly\Desktop.ini	s557.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	s557.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
1916	4256	WerFault.exe	83

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	c255d8e51b1bbe3020a80b176e59c020N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	c255d8e51b1bbe3020a80b176e59c020N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4256	c255d8e51b1bbe3020a80b176e59c020N.exe
4256	c255d8e51b1bbe3020a80b176e59c020N.exe
3828	s557.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3828	s557.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3828	s557.exe
3828	s557.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4256 wrote to memory of 3828	4256	c255d8e51b1bbe3020a80b176e59c020N.exe	84
PID 4256 wrote to memory of 3828	4256	c255d8e51b1bbe3020a80b176e59c020N.exe	84

C:\Users\Admin\AppData\Local\Temp\c255d8e51b1bbe3020a80b176e59c020N.exe
"C:\Users\Admin\AppData\Local\Temp\c255d8e51b1bbe3020a80b176e59c020N.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks computer location settings
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\n557\s557.exe
  "C:\Users\Admin\AppData\Local\Temp\n557\s557.exe" ins.exe /e 1911877 /u 4d886865-fe6c-4569-82be-0f545bc06ebe /v "C:\Users\Admin\AppData\Local\Temp\c255d8e51b1bbe3020a80b176e59c020N.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 4468
  2⤵
  - Program crash
  PID:1916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4256 -ip 4256
1⤵
PID:2436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\n557\s557.exe

Filesize
282KB

MD5
a5f96448b94c4cbdb67cab9144084305

SHA1
df5d9135cc23a1cf0c9ec626f07fe6a2fbd7b752

SHA256
3ee1a236436e1bb2d84bc1d586560e7450444828a9c86af7f3c09654a54061b4

SHA512
6b4973bd5895822381944b22832093c6c4d6704ecaf7d693fa7a2c563f18b44342012b9a119b407dcab8824158ce42815a6f54902a93b85855ae1d78d6295899

Download Submit
memory/3828-11-0x00007FF9F9BD5000-0x00007FF9F9BD6000-memory.dmp

Filesize
4KB

Download
memory/3828-12-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-13-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-14-0x0000000001810000-0x000000000181A000-memory.dmp

Filesize
40KB

Download
memory/3828-17-0x000000001C400000-0x000000001C8CE000-memory.dmp

Filesize
4.8MB

Download
memory/3828-18-0x000000001C970000-0x000000001CA0C000-memory.dmp

Filesize
624KB

Download
memory/3828-19-0x00000000017F0000-0x00000000017F8000-memory.dmp

Filesize
32KB

Download
memory/3828-20-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-21-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-22-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-23-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-24-0x000000001DAB0000-0x000000001DB12000-memory.dmp

Filesize
392KB

Download
memory/3828-25-0x00000000203D0000-0x000000002050C000-memory.dmp

Filesize
1.2MB

Download
memory/3828-26-0x0000000020A20000-0x0000000020F2E000-memory.dmp

Filesize
5.1MB

Download
memory/3828-27-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download
memory/3828-29-0x00007FF9F9920000-0x00007FF9FA2C1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads