460550950795698b91eca429b99fe023999af2edf205d67d6462c190e1f4e6ca

Resubmissions

03/05/2024, 18:40

240503-xa7xwagb26 10

03/05/2024, 18:19

240503-wynngach5t 10

03/05/2024, 15:38

240503-s26fxaad2t 10

Analysis

max time kernel
68s
max time network
57s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 18:40

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Report Analysis Logs

General

Target

OSBC.pyc
Size

8KB
MD5

841437319f7c62d64daedd2eecee339e
SHA1

7fa7cdccb82864f0a237294df9eff9871ccf2a26
SHA256

4bb5d50dfe5d05456aa94206c226d1b6c31392a1de2da84bb84feed175f48cce
SHA512

82972afd227779cf04c96d74ba7fd016f5d85d8cdd8ce01ba1f86349f74b4dd1a490a4527b170db59a90262ae1b38f780353278cfc3509b82ce230625237c52f
SSDEEP

192:1jz3oLX+DdZuMbV7Q5Jz6MEm+zymuzugcC3W3wP:Nz3oOQzzammcc+W3wP

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4100	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5108	OpenWith.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe
5108	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 4100	5108	OpenWith.exe	91
PID 5108 wrote to memory of 4100	5108	OpenWith.exe	91

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\OSBC.pyc
1⤵
- Modifies registry class
PID:912

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\OSBC.pyc
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:4100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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