Analysis

  • max time kernel
    156s
  • max time network
    167s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 06:30

General

  • Target

    3a2ad0bdeda7c25c8aab96d2d2c2475d4dcb46be7ba69e23b98ae0c8f75c4dbe.exe

  • Size

    1.0MB

  • MD5

    352c94d7274f0db55cc2a7de88d1a461

  • SHA1

    1ef0e6adc7658520eda8da5044697615e77881f3

  • SHA256

    3a2ad0bdeda7c25c8aab96d2d2c2475d4dcb46be7ba69e23b98ae0c8f75c4dbe

  • SHA512

    61d6420c3f8ccef965a1425f7c3fd5d3961bf9c35c3ccea0903f1131d90728606d02249c3f7ecf214c9b2a20eb53be5a691dac8c737b7a7f7ffc2394595ff8b0

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    longwheelbase2018@yandex.com
  • Password:
    myrecords1248

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 9 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 8 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 13 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a2ad0bdeda7c25c8aab96d2d2c2475d4dcb46be7ba69e23b98ae0c8f75c4dbe.exe
    "C:\Users\Admin\AppData\Local\Temp\3a2ad0bdeda7c25c8aab96d2d2c2475d4dcb46be7ba69e23b98ae0c8f75c4dbe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1392
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:316
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
        3⤵
          PID:328

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\holderwb.txt
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/316-69-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/316-78-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/316-76-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/316-73-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/316-70-0x0000000000411654-mapping.dmp
    • memory/328-77-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/328-84-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/328-82-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/328-79-0x0000000000442628-mapping.dmp
    • memory/1392-54-0x0000000075951000-0x0000000075953000-memory.dmp
      Filesize

      8KB

    • memory/1392-68-0x0000000074710000-0x0000000074CBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1392-55-0x0000000074710000-0x0000000074CBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1392-56-0x0000000074710000-0x0000000074CBB000-memory.dmp
      Filesize

      5.7MB

    • memory/2036-62-0x0000000000100000-0x0000000000184000-memory.dmp
      Filesize

      528KB

    • memory/2036-58-0x0000000000100000-0x0000000000184000-memory.dmp
      Filesize

      528KB

    • memory/2036-75-0x0000000000926000-0x0000000000937000-memory.dmp
      Filesize

      68KB

    • memory/2036-74-0x0000000074710000-0x0000000074CBB000-memory.dmp
      Filesize

      5.7MB

    • memory/2036-57-0x0000000000100000-0x0000000000184000-memory.dmp
      Filesize

      528KB

    • memory/2036-67-0x0000000074710000-0x0000000074CBB000-memory.dmp
      Filesize

      5.7MB

    • memory/2036-65-0x0000000000100000-0x0000000000184000-memory.dmp
      Filesize

      528KB

    • memory/2036-85-0x0000000000926000-0x0000000000937000-memory.dmp
      Filesize

      68KB