fd0544bdeb691b88a388b2a51da072c4de37b5f7d9af2a1948d45aed755a80a2

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
08/06/2024, 16:09

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
blxstealer.pyc
Size 40KB
Sample240608-tl7jpsea65
SHA256 429107a9b3716479f48147c1de776bb5e41d8a29de248893378e9483e1d70d96
MD5 f91a2cad1ee847984dfde520d8dfb693
SHA1 10d295589a036c1c8ba85db9b6067f381dc44603
SHA512 8c9fbf28ae1134cc549356e4938278d1d77981c4a52e4170f13da7603a508ee05a01464764f806144f8d1a914f910b78932d7025b37fc040cc0dc94b1323542e
SSDEEP 768:zUq+ewxN8R6PjYHA1LgKoX3d7bCsmySr5VUIHrseH53A2UcVAQnb0RwC:DKuRqt2ksmywVlflUcOQQR9
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2700	2180	cmd.exe	29
PID 2180 wrote to memory of 2700	2180	cmd.exe	29
PID 2180 wrote to memory of 2700	2180	cmd.exe	29
PID 2700 wrote to memory of 2724	2700	rundll32.exe	30
PID 2700 wrote to memory of 2724	2700	rundll32.exe	30
PID 2700 wrote to memory of 2724	2700	rundll32.exe	30
PID 2700 wrote to memory of 2724	2700	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\blxstealer.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\blxstealer.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2700
- - 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\blxstealer.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2724

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

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 5c2f2a55c540ee6f583fccfb7c64f91411af344199b3e5a95c0940fa91d41b83
MD5 43442247e8497a0d2036cb8e0ba417a5
SHA1 c4109f4db052228afb0e7cb41553cbd947be71a9
SHA512 45defbf883e542b8a3649d7b34d007190dc9b85efa61fb647f77cd31c45f8c5050f033c86c374c20480fbb99d0ee5ac4eb4b56e3444a9a8c8d7d56b9f9dbed41
MD5 SHA1 SHA512

Submit Download