b3020dd6c9ffceaba72c465c8d596cf04e2d7388b4fd58f10d78be6b91a7e99d

Resubmissions

23/02/2024, 10:06

240223-l5dfzafb348

22/02/2024, 21:32

240222-1dt2zafd3z8

22/02/2024, 21:30

240222-1ctptaff924

22/02/2024, 21:25

240222-z9kmqsff588

Analysis

max time kernel
38s
max time network
319s
platform
windows10-1703_x64
resource
win10-20240221-en
resource tags

arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
submitted
23/02/2024, 10:06

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General

Target
salinewin.exe
Size 283KB
Sample240223-l5dfzafb34
SHA256 7163fefbf2f865ef78a2d3d4480532fffb979300d6f0a77b6f3fc5c4b0d2cada
MD5 2b1e9226d7e1015552a21faca891ec41
SHA1 f87fcbe10fa9312048214d4473498ad4f9f331ce
SHA512 1852f6d05c9fca962178bc190bc8c90f0ca54ea99714480690f44417e49eee6c392579091ae8a6cd053ec47ad1980dbbbc0db3e0e00520ee1bdbadbf8dc9d69e
SSDEEP 3072:HZVUJ58IAelkapH3shY6iEwgaBZP5pHQpYR95WPNpNMl3:nUJ5PzB5ZPPHQpY35WPNpGl3
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit evasion persistence

Malware Config

Signatures

Disables Task Manager via registry modification
evasion

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	salinewin.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4968	reg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	1112	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1112	AUDIODG.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 2536	4692	salinewin.exe	72
PID 4692 wrote to memory of 2536	4692	salinewin.exe	72
PID 4692 wrote to memory of 2536	4692	salinewin.exe	72
PID 2536 wrote to memory of 4968	2536	cmd.exe	74
PID 2536 wrote to memory of 4968	2536	cmd.exe	74
PID 2536 wrote to memory of 4968	2536	cmd.exe	74

C:\Users\Admin\AppData\Local\Temp\salinewin.exe
"C:\Users\Admin\AppData\Local\Temp\salinewin.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Windows\SysWOW64\reg.exe
    REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
    3⤵
    - Modifies registry key
    PID:4968

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x3a4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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