Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    19-05-2021 18:31

General

  • Target

    3D29B2A1A23B12A5134FBE8B17FE5BA0C87549E567123.exe

  • Size

    1.0MB

  • MD5

    033e13c4aca370aeeb8031dbce7bf0b9

  • SHA1

    406100cd169260cecdf31914d055b612f678b00e

  • SHA256

    3d29b2a1a23b12a5134fbe8b17fe5ba0c87549e5671232eb9e842c2a55ad8f2b

  • SHA512

    4aa49c6b70df63bb022b5c7fcd7aef985c503dd21f6994394a4360a98cba4f3283f2dd8e986d9bf23cfe94425286526fff0f5b296a71c364b7a3e05d639ad00f

Malware Config

Extracted

Family

redline

Botnet

EUMX

C2

tstamore.info:80

Extracted

Family

redline

Botnet

121212

C2

168.119.241.77:60932

Signatures

  • RedLine

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

  • RedLine Payload 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

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

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3D29B2A1A23B12A5134FBE8B17FE5BA0C87549E567123.exe
    "C:\Users\Admin\AppData\Local\Temp\3D29B2A1A23B12A5134FBE8B17FE5BA0C87549E567123.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Users\Admin\AppData\Local\Temp\1080067628.exe
      C:\Users\Admin\AppData\Local\Temp\1080067628.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1556
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:688
    • C:\Users\Admin\AppData\Local\Temp\1329119978.exe
      C:\Users\Admin\AppData\Local\Temp\1329119978.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Users\Admin\AppData\Local\Temp\1329119978.exe
        C:\Users\Admin\AppData\Local\Temp\1329119978.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /k ping 0 & del C:\Users\Admin\AppData\Local\Temp\3D29B2A1A23B12A5134FBE8B17FE5BA0C87549E567123.exe & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1564
      • C:\Windows\SysWOW64\PING.EXE
        ping 0
        3⤵
        • Runs ping.exe
        PID:1844

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/676-83-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/676-90-0x0000000000320000-0x0000000000321000-memory.dmp

    Filesize

    4KB

  • memory/676-86-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/688-71-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/688-73-0x00000000010E0000-0x00000000010E1000-memory.dmp

    Filesize

    4KB

  • memory/688-69-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1556-65-0x0000000000E40000-0x0000000000E41000-memory.dmp

    Filesize

    4KB

  • memory/1556-67-0x00000000002C0000-0x00000000002C9000-memory.dmp

    Filesize

    36KB

  • memory/1556-68-0x00000000047C0000-0x00000000047C1000-memory.dmp

    Filesize

    4KB

  • memory/1864-59-0x0000000076A81000-0x0000000076A83000-memory.dmp

    Filesize

    8KB

  • memory/1900-80-0x00000000070D0000-0x00000000070D1000-memory.dmp

    Filesize

    4KB

  • memory/1900-81-0x0000000000800000-0x0000000000807000-memory.dmp

    Filesize

    28KB

  • memory/1900-78-0x0000000001370000-0x0000000001371000-memory.dmp

    Filesize

    4KB