7b6acb5e2c245b8cfda77fced2cc0e94108384cd1b9ffc8510e7304fcb9feb6c

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 07:07

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General

Target

71354278675a4deea20fb3cbb5f77170_JaffaCakes118.dll
Size

740KB
MD5

71354278675a4deea20fb3cbb5f77170
SHA1

073e9f1db6c1be847f186553e985e35e4de03c70
SHA256

7b6acb5e2c245b8cfda77fced2cc0e94108384cd1b9ffc8510e7304fcb9feb6c
SHA512

e664f02f2d2918c30a6fb75ab7dfe22ab0f2eea8e7ebbcd5b211463062744e51e3956d320127570db0b5dc9c12fb39c6b204bc2967bd4708bccab17d5c980915
SSDEEP

12288:NRJ6OytWOdpAFN0i2J+twkFFNQXNxE+VOvQ3tKDuztSVPXQdlO3BuOmuVbAA/IFv:ND7rO7qNp2gNQ9xqkYDWYPgiEdgAA/VS

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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1692 2188 WerFault.exe rundll32.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

pid	pid_target	process	target process
1692	2188	WerFault.exe	rundll32.exe

Modifies registry class 3 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2188	2416	rundll32.exe	rundll32.exe
PID 2188 wrote to memory of 1692	2188	rundll32.exe	WerFault.exe
PID 2188 wrote to memory of 1692	2188	rundll32.exe	WerFault.exe
PID 2188 wrote to memory of 1692	2188	rundll32.exe	WerFault.exe
PID 2188 wrote to memory of 1692	2188	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\71354278675a4deea20fb3cbb5f77170_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2416

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\71354278675a4deea20fb3cbb5f77170_JaffaCakes118.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2188 -s 272
3⤵
- Program crash
PID:1692

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

Replay Monitor

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Downloads

memory/2188-1-0x00000000101CF000-0x00000000101D0000-memory.dmp

Filesize
4KB

Download
memory/2188-2-0x0000000010000000-0x00000000101F8000-memory.dmp

Filesize
2.0MB

Download
memory/2188-0-0x0000000010000000-0x00000000101F8000-memory.dmp

Filesize
2.0MB

Download
memory/2188-3-0x0000000010000000-0x00000000101F8000-memory.dmp

Filesize
2.0MB

Download
memory/2188-5-0x00000000101CF000-0x00000000101D0000-memory.dmp

Filesize
4KB

Download