1dbb15d64453eaf80b0630e7d8e25fdfad21329970bed1f2ecd0a81cc7499d9f | Triage

Analysis

max time kernel
1s
max time network
31s
platform
windows7_x64
resource
win7v20210410
submitted
26-07-2021 12:41

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General

Target

1dbb15d64453eaf80b0630e7d8e25fdfad21329970bed1f2ecd0a81cc7499d9f.sample.dll
Size

99KB
MD5

d045c497fb70e7f1457e564e92e3d4ee
SHA1

634242c1e23ba78029a75d70552b42c7ed15b36d
SHA256

1dbb15d64453eaf80b0630e7d8e25fdfad21329970bed1f2ecd0a81cc7499d9f
SHA512

079727bd80655222c65b43ff51a9f9332701c9e150c1b470511123cbabe00bb368a0ae7a76a454cbf4c1c0f1601d64b7a9cd2dee5423efcd4872b85f1d888b9b

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
T1067

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeShutdownPrivilege 1892 rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe
PID 1676 wrote to memory of 1892	1676	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1dbb15d64453eaf80b0630e7d8e25fdfad21329970bed1f2ecd0a81cc7499d9f.sample.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1dbb15d64453eaf80b0630e7d8e25fdfad21329970bed1f2ecd0a81cc7499d9f.sample.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:1892

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1892-60-0x0000000000000000-mapping.dmp

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memory/1892-61-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

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