bf7159ac03c0ae3148503b0050bddf58bd015b97aed551f3f7adc5a991579c7c

Analysis

max time kernel
121s
max time network
138s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 10:05

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General

Target

1553806d11e626264a87b49245247596.dll
Size

84KB
MD5

1553806d11e626264a87b49245247596
SHA1

ed0a69abe21188fc08a68b5d06824c870b9e3350
SHA256

bf7159ac03c0ae3148503b0050bddf58bd015b97aed551f3f7adc5a991579c7c
SHA512

bad4226e92b94a22fa858033c83b8b9eef25c51a5d4dcef62f388cb6bf8ecd30b298a1d2dd1003e2b89f1db72bd1c1b778faad62379ad949c640d3fd25bf6e16
SSDEEP

1536:TNT03J+89s/WrexP1Bw3/6yROcAkbahE+K:TNiMKsere3BiROcAkbW

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1688	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28
PID 2008 wrote to memory of 1688	2008	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1553806d11e626264a87b49245247596.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1553806d11e626264a87b49245247596.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:1688

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1688-0-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/1688-1-0x0000000010000000-0x0000000010009000-memory.dmp

Filesize
36KB

Download