d93f73c6469bd56ad4d1b9d07e4d5b271beb0c012d17c5576b18ebc35588e9ab

Analysis

max time kernel
0s
max time network
1s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/11/2024, 10:46

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General

Target

2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe
Size

577KB
MD5

852656b9342fa5b987d15b6c01565e60
SHA1

2a1404ccf09e8c9e616e9f4039d9b98a2e0fa2c8
SHA256

d93f73c6469bd56ad4d1b9d07e4d5b271beb0c012d17c5576b18ebc35588e9ab
SHA512

68eb9f0b61477978a583b8b5a8b2f3dbd51f7e5c23f6d96a4aec218c64ef5efa6db7be7fd3b7010fcf20607a1ca51cb6689b4e66b1f85e34bfdbedc0739d214d
SSDEEP

12288:nctEagGmcl4gBF1BRnI6hAVebOe1AFdMpUrMZ9uEIZc0b:aR+cl7X1BRnI6hmebOe1AbHWuEIZcW

Score

7^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1712	Petya.A.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wiper = "Recovery Files Setup.exe"	reg.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Petya.A.exe

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

System Information Discovery
T1082

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
1712	Petya.A.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1712	Petya.A.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2484	1928	2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe	30
PID 1928 wrote to memory of 2484	1928	2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe	30
PID 1928 wrote to memory of 2484	1928	2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe	30
PID 2484 wrote to memory of 1740	2484	cmd.exe	32
PID 2484 wrote to memory of 1740	2484	cmd.exe	32
PID 2484 wrote to memory of 1740	2484	cmd.exe	32
PID 2484 wrote to memory of 1712	2484	cmd.exe	33
PID 2484 wrote to memory of 1712	2484	cmd.exe	33
PID 2484 wrote to memory of 1712	2484	cmd.exe	33
PID 2484 wrote to memory of 1712	2484	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_852656b9342fa5b987d15b6c01565e60_cova_ryuk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\Encrypt.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Windows\system32\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Wiper /t REG_SZ /d "Recovery Files Setup.exe" /f
    3⤵
    - Adds Run key to start application
    PID:1740
- - C:\Users\Admin\AppData\Local\Temp\Petya.A.exe
    Petya.A.exe
    3⤵
    - Executes dropped EXE
    - Writes to the Master Boot Record (MBR)
    - Suspicious behavior: CmdExeWriteProcessMemorySpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Encrypt.bat

Filesize
169B

MD5
344bc51e1d3e088464dd0e8b943f4810

SHA1
cc78eaf52c35f5b0cc505d5813c0f7dbee659bf5

SHA256
5e48229b6cf85c11af6d3d740854cd3e4595dd4fec007f0d0e770401c8208002

SHA512
6e84e4a0fc81e23327ac12bbc1b98123a336071b658acadf861f8b44179280d1a4bdf6fa6356f75d3685c544b7db14b3f05b3887a62a0f3a9313afe6f9ed53c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Petya.A.exe

Filesize
225KB

MD5
af2379cc4d607a45ac44d62135fb7015

SHA1
39b6d40906c7f7f080e6befa93324dddadcbd9fa

SHA256
26b4699a7b9eeb16e76305d843d4ab05e94d43f3201436927e13b3ebafa90739

SHA512
69899c47d0b15f92980f79517384e83373242e045ca696c6e8f930ff6454219bf609e0d84c2f91d25dfd5ef3c28c9e099c4a3a918206e957be806a1c2e0d3e99

Download Submit
memory/1712-22-0x000000000041A000-0x0000000000427000-memory.dmp

Filesize
52KB

Download
memory/1712-23-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads