462ab9c3edb1bc0477593a3033de602880b6b70794cc0d143e39387189b77d66

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 16:14

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General

Target
aeef0e850a364f8794133dc64717850b.dll
Size 615KB
Sample240229-tpr87aee59
SHA256 462ab9c3edb1bc0477593a3033de602880b6b70794cc0d143e39387189b77d66
MD5 aeef0e850a364f8794133dc64717850b
SHA1 5694dd0082a9e52b4cccc86f9e168196476be0ee
SHA512 08025fef18632b44e64729a2b50893485a53647c04d5919d040058615dcb8592b336b0eb01430719cdb630939110d947c6615d60c534d3a8ea8cf3b0ead2ed91
SSDEEP 12288:oxu+5T56mWSZuykv6p609niRQB02avRuEXqaOTCosjZNtTirdSEM96:oA6YmXZqSjcV2ibXb9TEdSB
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

bootkit persistence

Malware Config

Signatures

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	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2884	2320	WerFault.exe	28

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2320	rundll32.exe
Token: SeSecurityPrivilege	2320	rundll32.exe
Token: SeTakeOwnershipPrivilege	2320	rundll32.exe
Token: SeLoadDriverPrivilege	2320	rundll32.exe
Token: SeSystemProfilePrivilege	2320	rundll32.exe
Token: SeSystemtimePrivilege	2320	rundll32.exe
Token: SeProfSingleProcessPrivilege	2320	rundll32.exe
Token: SeIncBasePriorityPrivilege	2320	rundll32.exe
Token: SeCreatePagefilePrivilege	2320	rundll32.exe
Token: SeShutdownPrivilege	2320	rundll32.exe
Token: SeDebugPrivilege	2320	rundll32.exe
Token: SeSystemEnvironmentPrivilege	2320	rundll32.exe
Token: SeRemoteShutdownPrivilege	2320	rundll32.exe
Token: SeUndockPrivilege	2320	rundll32.exe
Token: SeManageVolumePrivilege	2320	rundll32.exe
Token: 33	2320	rundll32.exe
Token: 34	2320	rundll32.exe
Token: 35	2320	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2320	rundll32.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2320	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 848 wrote to memory of 2320	848	rundll32.exe	28
PID 2320 wrote to memory of 2884	2320	rundll32.exe	29
PID 2320 wrote to memory of 2884	2320	rundll32.exe	29
PID 2320 wrote to memory of 2884	2320	rundll32.exe	29
PID 2320 wrote to memory of 2884	2320	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aeef0e850a364f8794133dc64717850b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\aeef0e850a364f8794133dc64717850b.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 268
    3⤵
    - Program crash
    PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2320-0-0x0000000000880000-0x0000000000982000-memory.dmp

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memory/2320-1-0x0000000000880000-0x0000000000982000-memory.dmp

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memory/2320-2-0x0000000000880000-0x0000000000982000-memory.dmp

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memory/2320-9-0x0000000002920000-0x0000000002921000-memory.dmp

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memory/2320-8-0x00000000007B0000-0x00000000007B1000-memory.dmp

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memory/2320-7-0x00000000007A0000-0x00000000007A1000-memory.dmp

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memory/2320-6-0x00000000007E0000-0x00000000007E3000-memory.dmp

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memory/2320-5-0x00000000001C0000-0x00000000001C1000-memory.dmp

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memory/2320-4-0x0000000000250000-0x0000000000251000-memory.dmp

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memory/2320-3-0x00000000002B0000-0x00000000002F3000-memory.dmp

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memory/2320-10-0x0000000000880000-0x0000000000982000-memory.dmp

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memory/2320-12-0x0000000002920000-0x0000000002921000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads