Overview

overview

10

Static

static

a249b457c3...49.exe

windows7_x64

10

a249b457c3...49.exe

windows10_x64

10

Analysis

  • max time kernel
    112s
  • max time network
    138s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21/08/2021, 22:50

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    a249b457c3b1d22040ca4e8d09039449.exe
  • Size 875KB
  • Sample210821-fp23mbftps
  • SHA256 fcecbcea7e3f8b8af9657b27aee80c44fc6bf24c2df563607925feca4e2fec38
  • MD5 SHA1 SHA512
Score
10/10
redlinebuild2_mastifagilenetinfostealerpersistence

Malware Config

Extracted

Family

  • redline

Botnet

  • Build2_Mastif

C2

  • 95.181.157.69:8552

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    infostealerredline
  • RedLine Payload 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    agilenet
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a249b457c3b1d22040ca4e8d09039449.exe
    "C:\Users\Admin\AppData\Local\Temp\a249b457c3b1d22040ca4e8d09039449.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3628
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:360
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS3166.tmp\Install.cmd" "
        3⤵
        • Checks computer location settings
        PID:3680
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1168
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE
        "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4628
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2136
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:4036
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2308
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:3168

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1168-130-0x00000000056C0000-0x000000000575C000-memory.dmp
        Download

        memory/1168-126-0x0000000005760000-0x0000000005761000-memory.dmp
        Download

        memory/1168-127-0x0000000005D00000-0x0000000005D01000-memory.dmp
        Download

        memory/1168-128-0x0000000005800000-0x0000000005801000-memory.dmp
        Download

        memory/1168-124-0x0000000000D90000-0x0000000000D91000-memory.dmp
        Download

        memory/1168-131-0x00000000056A0000-0x00000000056A1000-memory.dmp
        Download

        memory/1168-132-0x0000000005A10000-0x0000000005A11000-memory.dmp
        Download

        memory/1168-133-0x0000000005B40000-0x0000000005B51000-memory.dmp
        Download

        memory/1168-134-0x0000000008F60000-0x0000000008FE4000-memory.dmp
        Download

        memory/1168-135-0x000000000B720000-0x000000000B73A000-memory.dmp
        Download

        memory/4628-136-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/4628-142-0x0000000005BF0000-0x0000000005BF1000-memory.dmp
        Download

        memory/4628-143-0x00000000056A0000-0x00000000056A1000-memory.dmp
        Download

        memory/4628-144-0x0000000005700000-0x0000000005701000-memory.dmp
        Download

        memory/4628-145-0x0000000005740000-0x0000000005741000-memory.dmp
        Download

        memory/4628-146-0x00000000055E0000-0x0000000005BE6000-memory.dmp
        Download

        memory/4628-147-0x00000000059B0000-0x00000000059B1000-memory.dmp
        Download

        memory/4628-148-0x0000000006C20000-0x0000000006C21000-memory.dmp
        Download

        memory/4628-149-0x0000000007320000-0x0000000007321000-memory.dmp
        Download