fbcc7b1ddea1dcfe7e6a069e2b4988ab08b9ecfdaed2e6752a5cd832a99a4451

Analysis

max time kernel
76s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/09/2024, 19:13

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General

Target

fbcc7b1ddea1dcfe7e6a069e2b4988ab08b9ecfdaed2e6752a5cd832a99a4451N.dll
Size

89KB
MD5

fcfa81150c9ed1cc8dad04d59d4534c0
SHA1

a4704f1499d5e5ef73cb463e4175d0c97fe9d5fd
SHA256

fbcc7b1ddea1dcfe7e6a069e2b4988ab08b9ecfdaed2e6752a5cd832a99a4451
SHA512

3b17448a9d22911cf9529fab972b49166f477930893c209b2b67c97c9a0af1b1c19cdebea02257761cb08338c716efd3a24196273e51a86c44dbff6c8674ae43
SSDEEP

1536:hQ7mwKK5Uu77hFrhlxWg5x66qLnU/VaRRMynFcgrz6wzmy65jy8WzN2f:hOwK5H77LFLWgu2sM/grXmy6o864

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2704	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30
PID 2688 wrote to memory of 2704	2688	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbcc7b1ddea1dcfe7e6a069e2b4988ab08b9ecfdaed2e6752a5cd832a99a4451N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbcc7b1ddea1dcfe7e6a069e2b4988ab08b9ecfdaed2e6752a5cd832a99a4451N.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2704

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

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2704-0-0x00000000001B0000-0x00000000001BC000-memory.dmp

Filesize
48KB

Download
memory/2704-4-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2704-3-0x00000000001B0000-0x00000000001BC000-memory.dmp

Filesize
48KB

Download
memory/2704-1-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2704-7-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2704-6-0x00000000001B0000-0x00000000001BC000-memory.dmp

Filesize
48KB

Download