f02c37f619d4bd2d0b16092a95599a59b45def9e18f46d733c8a885ffd776bbf

Analysis

max time kernel
119s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 15:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Ransomware.exe
Size

226KB
MD5

d84b539729ac3e998beb543a31a698cc
SHA1

9fd3145c32b13a99cc9bb90f4a365615504eafe1
SHA256

78bd79e04587e7cb4e0822ef430badd710aa1f10e5e227a6226ca17cca8a8c27
SHA512

1af2784a2d71ddaf9b110b8e70f2fc3e96e8f2da08c02bcd6dd7e74416b8695794f0a5890cb41b3dee411a2d3f716682afe7fd10740a79a70c139fb79f00c15e
SSDEEP

3072:BQqYoq/mfae47e4frk8feIy4yLahVxjrRKzHA86mgsFlI3ToCku5rRspB:4/SI7ffrzfs4yLajx888XDI3T/kAE

Score

10^/10

discovery evasion persistence ransomware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty"	Ransomware.exe

Disables Task Manager via registry modification
evasion

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\Desktop\Wallpaper	Ransomware.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\System32\CyptedReady.ini	Ransomware.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	Ransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2632	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
840	Ransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	Ransomware.exe
Token: SeDebugPrivilege	2632	taskkill.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
840	Ransomware.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 2632	840	Ransomware.exe	31
PID 840 wrote to memory of 2632	840	Ransomware.exe	31
PID 840 wrote to memory of 2632	840	Ransomware.exe	31
PID 840 wrote to memory of 2632	840	Ransomware.exe	31

C:\Users\Admin\AppData\Local\Temp\Ransomware.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware.exe"
1⤵
- Modifies WinLogon for persistence
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:840
- C:\Windows\SysWOW64\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /F /IM explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

Loading Replay Monitor...

Downloads

memory/840-0-0x000000007422E000-0x000000007422F000-memory.dmp

Filesize
4KB

Download
memory/840-1-0x0000000000F70000-0x0000000000FAE000-memory.dmp

Filesize
248KB

Download
memory/840-2-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download
memory/840-4-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/840-3-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/840-70-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download
memory/840-71-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download
memory/840-72-0x000000007422E000-0x000000007422F000-memory.dmp

Filesize
4KB

Download
memory/840-73-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download
memory/840-74-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/840-75-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/840-76-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download
memory/840-77-0x0000000074220000-0x000000007490E000-memory.dmp

Filesize
6.9MB

Download