2864b88797bfdc043dae9c5367e7f1c36e3070868894af856ff489079a0a483c

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 18:53

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

R34Downloader.pdb
Size

59KB
MD5

0f52dae19cfe07fdae33b39b08c9cfb9
SHA1

e451bc0416d7f6922e2df466d25032bded12998b
SHA256

b7fd6d33b52a4f78bc53de573e792515e6b5ac28cc5c0a01c42effae0e624375
SHA512

725822632938ac03ab738a37e8cce76443aaac8466c5aa207b785e7bc95c735257ea7dc621ec18026248c496e9b42312de13a42e55c40aa7e88383f160387d9c
SSDEEP

768:K92uPG8nzvnfyOnyDXtDfF3B7HZ1H5vfGouZ1mEduXjaA+L6gYLt5pXNtJX7lHOc:KIuZ1mEduT1+Lgt5hNtJLlHOUp2

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-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pdb	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pdb_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
2608	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2608	AcroRd32.exe
2608	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2516	2320	cmd.exe	29
PID 2320 wrote to memory of 2516	2320	cmd.exe	29
PID 2320 wrote to memory of 2516	2320	cmd.exe	29
PID 2516 wrote to memory of 2608	2516	rundll32.exe	30
PID 2516 wrote to memory of 2608	2516	rundll32.exe	30
PID 2516 wrote to memory of 2608	2516	rundll32.exe	30
PID 2516 wrote to memory of 2608	2516	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\R34Downloader.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\R34Downloader.pdb
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2516
- - 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\R34Downloader.pdb"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2608

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

Loading Replay Monitor...

Downloads

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

Filesize
3KB

MD5
907b91f02ac0b40d39bc6428d34d1a28

SHA1
8f3c1f0545606bd312b1d4dafda4055ca6d986e1

SHA256
7c571f305bc8b49015451ea43b12b57dac5352cb9b3df1c2b77caa6c1532260a

SHA512
86f7489353ff011d0af69e579ed1e6774ae292c4adb8e04f5ccdb3f524851acd743f0f3f35b679691163e24494a56e19133fe5a2e91e1835145ac90e90c037c7

Download Submit