4b83aaecddfcb8cf5caeff3cb30fee955ecfc3eea97d19dccf86f24c77c41fc4

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 16:58

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General

Target

file.exe
Size

681KB
MD5

a41afe748aed818ab6ac94e81bdde610
SHA1

9468012acf6df7a0e593f41e0da8123f541277df
SHA256

4b83aaecddfcb8cf5caeff3cb30fee955ecfc3eea97d19dccf86f24c77c41fc4
SHA512

43394cb5e461fb43d324e5b5c212d3c9832fd659e81cd6e250beff7b738d00eaedc2ab0d37f8f3a2cf513997dfc838c31380c64d5e911c65329caf65fb570975
SSDEEP

12288:FMJYSP5VV3VG7rYyPT+p/VYXMJ8oD536bGIqs7GBvw0QygfmHp:FMVj3IXYETQV1XD5VIZ7GOg1J

Score

9^/10

defense_evasion discovery execution impact ransomware

Malware Config

Signatures

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1896	1856	WerFault.exe	29

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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2804	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q\DefaultIcon	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.tcw9lnz6q\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2808	vssvc.exe
Token: SeRestorePrivilege	2808	vssvc.exe
Token: SeAuditPrivilege	2808	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 2308	1856	file.exe	30
PID 1856 wrote to memory of 2308	1856	file.exe	30
PID 1856 wrote to memory of 2308	1856	file.exe	30
PID 1856 wrote to memory of 2308	1856	file.exe	30
PID 2308 wrote to memory of 2804	2308	cmd.exe	32
PID 2308 wrote to memory of 2804	2308	cmd.exe	32
PID 2308 wrote to memory of 2804	2308	cmd.exe	32
PID 2308 wrote to memory of 2804	2308	cmd.exe	32
PID 1856 wrote to memory of 1896	1856	file.exe	35
PID 1856 wrote to memory of 1896	1856	file.exe	35
PID 1856 wrote to memory of 1896	1856	file.exe	35
PID 1856 wrote to memory of 1896	1856	file.exe	35

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 324
  2⤵
  - Program crash
  PID:1896

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact