a196c6b8ffcb97ffb276d04f354696e2391311db3841ae16c8c9f56f36a38e92

Resubmissions

18/01/2022, 20:30

220118-zaktfsdbfj10

16/01/2022, 23:24

220116-3dnw3agefr6

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-en-20211208
submitted
16/01/2022, 23:24

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General

Target
stage1.exe
Size 27KB
Sample220116-3dnw3agefr
SHA256 a196c6b8ffcb97ffb276d04f354696e2391311db3841ae16c8c9f56f36a38e92
MD5 5d5c99a08a7d927346ca2dafa7973fc1
SHA1 189166d382c73c242ba45889d57980548d4ba37e
SHA512 ece2ac87f5b80dc43ac68f766eee16be6f8cd3b1c6535c741551d0637c72c712e9f7de080e6fa612b321b9e9eab90922995bba5486debefbbb6e21104a80442d
MD5 SHA1 SHA512

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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	stage1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1608	1592	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1608	WerFault.exe
1608	WerFault.exe
1608	WerFault.exe
1608	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1608	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1608	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 1608	1592	stage1.exe	27
PID 1592 wrote to memory of 1608	1592	stage1.exe	27
PID 1592 wrote to memory of 1608	1592	stage1.exe	27
PID 1592 wrote to memory of 1608	1592	stage1.exe	27

C:\Users\Admin\AppData\Local\Temp\stage1.exe
"C:\Users\Admin\AppData\Local\Temp\stage1.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1592 -s 64
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:1608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1608-55-0x0000000075471000-0x0000000075473000-memory.dmp

Download

memory/1608-56-0x00000000001C0000-0x00000000001C1000-memory.dmp

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