ca8882fa0f8901d1ced64859a24e5aeb6cfc595818e822026c6bdb31c41cdbc6

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 14:31

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General

Target

fa81b15797a930ba3cd1becba7a6271d_JaffaCakes118.dll
Size

139KB
MD5

fa81b15797a930ba3cd1becba7a6271d
SHA1

d54e0e66b21ff35fbe83e08d2b16ea473864d8de
SHA256

ca8882fa0f8901d1ced64859a24e5aeb6cfc595818e822026c6bdb31c41cdbc6
SHA512

8d511392376a61ead636f3328e21fb7a7fc2c9d32f09070118f77a731ee8f799925f9089bb84991dc18a4391ab0115aa6d7e67e4df2fb74e08b9a25f2c38975b
SSDEEP

3072:uSB1fMiCOQibXjFyZ25m8LFGC4l+zsjI0fuT4:/vfM34Xjoam8LFG5ozsjDuT

Score

8^/10

bootkit persistence

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2820	rundll32.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2820	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28
PID 2756 wrote to memory of 2820	2756	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa81b15797a930ba3cd1becba7a6271d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa81b15797a930ba3cd1becba7a6271d_JaffaCakes118.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:2820

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/2820-0-0x0000000000140000-0x0000000000160000-memory.dmp

Filesize
128KB

Download
memory/2820-1-0x0000000000140000-0x0000000000160000-memory.dmp

Filesize
128KB

Download
memory/2820-2-0x0000000000140000-0x0000000000160000-memory.dmp

Filesize
128KB

Download
memory/2820-3-0x0000000000140000-0x0000000000160000-memory.dmp

Filesize
128KB

Download
memory/2820-4-0x0000000000140000-0x0000000000160000-memory.dmp

Filesize
128KB

Download
memory/2820-6-0x0000000000110000-0x0000000000139000-memory.dmp

Filesize
164KB

Download