83239ee058d2a5bf120848dd900654a94c770cce8c4cbe2a971b861795316a98

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/11/2024, 01:33

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General

Target
PayloadMBR/Data/decompress.asm
Size 1018B
Sample241107-byx7pasgnm
SHA256 3711c36eb6c4c93c88ee8fe31d2f32e4324b83a8336e7ca24e5adc3206dfa572
MD5 92d328c40ad015ee16ca8e0a3024bddc
SHA1 323f2cb3eb6f3315aab84dee013ace175c47d87f
SHA512 f22b86fb492f07622a2fdfc4462e530f49bbc532cf0a2eddb4c17e7e91b55f8ca1a730cff49420bb8d84b248f54ad3987523a3fd4d404baaa4a5629a3558672e
MD5 SHA1 SHA512

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 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_Classes\Local Settings	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2864	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 1928	2088	cmd.exe	31
PID 2088 wrote to memory of 1928	2088	cmd.exe	31
PID 2088 wrote to memory of 1928	2088	cmd.exe	31
PID 1928 wrote to memory of 2864	1928	rundll32.exe	33
PID 1928 wrote to memory of 2864	1928	rundll32.exe	33
PID 1928 wrote to memory of 2864	1928	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\PayloadMBR\Data\decompress.asm
1⤵
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\PayloadMBR\Data\decompress.asm
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\PayloadMBR\Data\decompress.asm
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2864

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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