4423693e8b8a26a3096c64522b0eb2d8b24845f1737ad98879cdc301c8f5ed01

Analysis

max time kernel
236s
max time network
145s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
28/09/2023, 19:15

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General

Target

oui.dat
Size

461KB
MD5

326902d595521aaf2376cedc4c966b05
SHA1

afc7bcae783916bce524518d3f1e1cf051d41c50
SHA256

0d45a7d5c4e3af25f054402bce40866ae37b34c28e545903a7f9dfbeb099043a
SHA512

1216a00cfbd46b0e3ba4ced0bb5f073c12e547fe0072d70bfc729d812e5f0fafc0be85c211b7fa9ded68af8fc320dc9d1446cd7892fe75790c44cb8692e1cfb9
SSDEEP

12288:jKO1xIkGEY/kUHg2Rp+gvm6054SYWBOLFLrXMVjtdtEdHK4ttd:jKO1nG3kg5H1vm604SYWBOLFPMJtdtEX

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-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\.dat	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3068	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3068	AcroRd32.exe
3068	AcroRd32.exe
3068	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 2464	2768	cmd.exe	29
PID 2768 wrote to memory of 2464	2768	cmd.exe	29
PID 2768 wrote to memory of 2464	2768	cmd.exe	29
PID 2464 wrote to memory of 3068	2464	rundll32.exe	30
PID 2464 wrote to memory of 3068	2464	rundll32.exe	30
PID 2464 wrote to memory of 3068	2464	rundll32.exe	30
PID 2464 wrote to memory of 3068	2464	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\oui.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\oui.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2464
- - 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\oui.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3068

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

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Downloads

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

Filesize
3KB

MD5
4dbc668f496fedd771a35d3ae0c02681

SHA1
a13405bf3bd84cafc8909b97ee91da0e4816e5cf

SHA256
76f0959d4fc6682fffd820d90544de38224411f713a6caf7edcaacc0331c0a94

SHA512
04758acb4783e193425db7e97d9151d3b394300a60612f652d3cdb2a1272516602af41730a17788f1ed0d97b2ddc90b167065aa604412470a2407e03a334bf15

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