Overview

overview

10

Static

static

0x00050000...at.exe

windows7_x64

10

0x00050000...at.exe

windows10_x64

10

Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    28-10-2021 18:36

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General

  • Target

    0x000500000001abb1-152.dat.exe

  • Size

    674KB

  • MD5

    e6904455750065e6351626c373eba2bb

  • SHA1

    e2917ff943628d8e9a715c1fadf20688d3e6396e

  • SHA256

    18d00aa5277e0aa198dcc2a3bc8cee034cb5e9c808b8220fe46fd18acc5f3010

  • SHA512

    838d884ebabda35d4580d9cee1845115d93e5725a3d159a034364f5576baed4ccbf182a42892b8109779d22e52e11db8b57174c2babf7f3787fdf5933e9d3878

Score
10/10
vidar754discoveryspywarestealersuricata

Malware Config

Extracted

Family

vidar

Version

41.6

Botnet

754

C2

https://mas.to/@lilocc

Attributes
  • profile_id

    754

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata
  • Vidar Stealer 2 IoCs
    stealer
  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0x000500000001abb1-152.dat.exe
    "C:\Users\Admin\AppData\Local\Temp\0x000500000001abb1-152.dat.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4176
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 0x000500000001abb1-152.dat.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\0x000500000001abb1-152.dat.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4428
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 0x000500000001abb1-152.dat.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4344
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

3
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    Download Submit
  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    Download Submit
  • memory/792-122-0x0000000000000000-mapping.dmp
    Download
  • memory/4176-115-0x00000000030C0000-0x000000000320A000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/4176-116-0x0000000004DB0000-0x0000000004E86000-memory.dmp
    Filesize

    856KB

    Download
  • memory/4176-117-0x0000000000400000-0x0000000002F6F000-memory.dmp
    Filesize

    43.4MB

    Download
  • memory/4344-121-0x0000000000000000-mapping.dmp
    Download
  • memory/4428-120-0x0000000000000000-mapping.dmp
    Download