7965493d62037e1eb29710a6f54ff314663b745c048d5c170239bbddcf12587c

Analysis

max time kernel
600s
max time network
369s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
23/11/2023, 17:14

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General

Target

rules/emerging-netbios.rules
Size

328KB
MD5

40a3cdb3f479ecf0e7564adc05ff427f
SHA1

d27c36373586b8aa7325be82e8f67b112caad481
SHA256

effd715ed61a9868e5d6eff2108d935c22873a8a2701cee7d92fa6cb09de110a
SHA512

3be1d0726e9ec48b79c53542a4250747fbddc5253b1526d333fcf249c5b04927626f6c7848a42a6c28dd8006e2f0013a845e6da4ea2f418e90ff43d7f812b797
SSDEEP

1536:xPnBPHiCS5JknebKhc/7J6sbK7MgDAkkJMiO5y91mMcVb6ulf2bVT:pnVHgQnebKhc/rO5y91mM6bblfGl

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.rules	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.rules\ = "rules_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\rules_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2752	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2752	AcroRd32.exe
2752	AcroRd32.exe
2752	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 2708	2964	cmd.exe	29
PID 2964 wrote to memory of 2708	2964	cmd.exe	29
PID 2964 wrote to memory of 2708	2964	cmd.exe	29
PID 2708 wrote to memory of 2752	2708	rundll32.exe	30
PID 2708 wrote to memory of 2752	2708	rundll32.exe	30
PID 2708 wrote to memory of 2752	2708	rundll32.exe	30
PID 2708 wrote to memory of 2752	2708	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\rules\emerging-netbios.rules
1⤵
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\rules\emerging-netbios.rules
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\rules\emerging-netbios.rules"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
75cc2b98c255000f26a4105265932c47

SHA1
7367f74ccddbae55ab9a2a54647b59f17b2eabc6

SHA256
145dd5c9466d8b0ea4b2f7d35b0aa04323a83e981ce346af4561910de9b3b00c

SHA512
a6fe037b1f94d89d926fa96443650f220d8a2040bc4e2a528f6b86aa953d0595feff82753cb2f034b1fdd2e2682481cba344237536267edd6da9b50fefbc6ab0

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