Analysis

  • max time kernel
    119s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    14-04-2022 06:53

General

  • Target

    679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942.exe

  • Size

    645KB

  • MD5

    6b66ea11a8f7baec2dd0c25201f5e421

  • SHA1

    cafc5bfa2c455f6a2faa031cb2d6a3b46e95e9fe

  • SHA256

    679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942

  • SHA512

    d8400b15a93223a290e070c28c75fcc308ea6dc856ce2d2a64fe958eeacef2eaa27fad92efde1da97ae2184d1d2d7297e177ce928a72e27b0d030f9f44702233

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lochmann2

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lochmann2

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Meta Stealer Stealer

    Meta Stealer steals passwords stored in browsers, written in C++.

  • AgentTesla Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942.exe
    "C:\Users\Admin\AppData\Local\Temp\679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xsGSWqW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE67.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1320
    • C:\Users\Admin\AppData\Local\Temp\679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3116

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\679095b25876f6f91bb1cf9d2ffe2b8133943aced1255d0f0212540fb4d58942.exe.log

    Filesize

    1KB

    MD5

    6f8f3a9a57cb30e686d3355e656031e0

    SHA1

    acccd6befb1a2f40e662280bc5182e086a0d079b

    SHA256

    283586e83b25099a5698cb9caf9c594a37060d11e0f55c81bb9c6d4f728448ea

    SHA512

    8f11d645ff4f8d5b1c45b06eb52cd45319659255306d60e80e33abfd04b9e3b1164679f11a8a23bd493e4b3f6b9841d70e553a01835eeaf6035b4d05e4fd7b54

  • C:\Users\Admin\AppData\Local\Temp\tmpBE67.tmp

    Filesize

    1KB

    MD5

    6228ef2d8da705c321621ef88cb79d9e

    SHA1

    b661b391294c52e069b03dfdf0572301dbcac02c

    SHA256

    690c6c554480e0eebc2c49461ae79252e0663f6bcf951f808ff2ab968b5b0754

    SHA512

    e6d067bd4ef1fc5bef07a274e83abac7705e9b9c232ae34eedf53699139c6ec5944f43337f7a913597ceb0f7cf3ac010094ac8b792f1e3324ad3c28aa9b63cfd

  • memory/2748-137-0x0000000004D30000-0x0000000004D3A000-memory.dmp

    Filesize

    40KB

  • memory/2748-138-0x0000000007760000-0x0000000007C8C000-memory.dmp

    Filesize

    5.2MB

  • memory/2748-139-0x0000000007E30000-0x0000000007ECC000-memory.dmp

    Filesize

    624KB

  • memory/2748-134-0x00000000002D0000-0x0000000000378000-memory.dmp

    Filesize

    672KB

  • memory/2748-136-0x0000000004D60000-0x0000000004DF2000-memory.dmp

    Filesize

    584KB

  • memory/2748-135-0x0000000005310000-0x00000000058B4000-memory.dmp

    Filesize

    5.6MB

  • memory/3116-143-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/3116-145-0x0000000005BE0000-0x0000000005C46000-memory.dmp

    Filesize

    408KB

  • memory/3116-146-0x0000000006860000-0x00000000068B0000-memory.dmp

    Filesize

    320KB