Analysis

  • max time kernel
    70s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-06-2022 08:44

General

  • Target

    File.exe

  • Size

    1.1MB

  • MD5

    49a8859c0b016aa1d4fc71fec3607c41

  • SHA1

    e5fbe3bf3e6896b147a0f004af84caa3c059069b

  • SHA256

    de8211573c5ce932d6cdd2f4ffe8f350268f6d0007d7a83bf5cb88e86c87a5fa

  • SHA512

    2cfb2157c24fb1d2f413c752618daffc5899269d16ca97f749325c57cd62c6729d5234ee2ed2f852ee1955d1988fa0253e402d012332fdd8659a24118a40ab64

Malware Config

Signatures

  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Echelon log file 1 IoCs

    Detects a log file produced by Echelon.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\File.exe
    "C:\Users\Admin\AppData\Local\Temp\File.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:736
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA56C.tmp.cmd""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2292
      • C:\Windows\system32\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:4016

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA56C.tmp.cmd
    Filesize

    153B

    MD5

    39ac3451842af3185a6ee1ae81b126f0

    SHA1

    21615734dffe9e91930c8da7d36ff1049e26a01c

    SHA256

    303951788325c518772a04432ff0b4c727410cac600766c8939fd9fe76e0a9bf

    SHA512

    9e9d00fec5a901471bd1a323a32cfbf4f3894fd3c4122896275b3f5e1b62a18bd3f72ec3c58f824b828ed3af383930d606d137826cee4874c27290678fce1bc2

  • memory/736-130-0x000001A0D93F0000-0x000001A0D9518000-memory.dmp
    Filesize

    1.2MB

  • memory/736-131-0x00007FF9DE280000-0x00007FF9DED41000-memory.dmp
    Filesize

    10.8MB

  • memory/736-132-0x000001A0F46E0000-0x000001A0F4702000-memory.dmp
    Filesize

    136KB

  • memory/736-133-0x00007FF9DE280000-0x00007FF9DED41000-memory.dmp
    Filesize

    10.8MB

  • memory/736-137-0x00007FF9DE280000-0x00007FF9DED41000-memory.dmp
    Filesize

    10.8MB

  • memory/2292-134-0x0000000000000000-mapping.dmp
  • memory/4016-136-0x0000000000000000-mapping.dmp