Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-04-2024 13:09

General

  • Target

    49136 E2K 610622871149136 E2K 6106228711.exe

  • Size

    804KB

  • MD5

    e8b61b099af93918a7d59477334471e0

  • SHA1

    a2ce7a730e96bf6c8f9cd512993fd67cf0c10767

  • SHA256

    e7456c57dba442a7e63f2bd45ff5be6c8168f2fcfd15c5e405536fb3bb212dcb

  • SHA512

    30b93418d244b71718a7fbf6683c27ac4bc799338f67d915367cb7cb5b93dab661b5b9071f49e055e9701d721ef3e788a0632adc062ecd32d1ffe225712bd855

  • SSDEEP

    12288:IYgBDMwdNEb40oLhLr1+vuYdCllN9cnUstwbvhz58lZNKXGLfR:IYgB7mINL/vbDci1p2d

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 2 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

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

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49136 E2K 610622871149136 E2K 6106228711.exe
    "C:\Users\Admin\AppData\Local\Temp\49136 E2K 610622871149136 E2K 6106228711.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4420
    • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
      "C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe" "C:\Users\Admin\AppData\Local\Temp\xmnxoix.au3"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1964
      • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
        "C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4208
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4204 --field-trial-handle=2700,i,14629483171127516024,12350888228055326066,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:652

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    4
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\bzeakrjaft.hv
      Filesize

      68KB

      MD5

      3fcceb6589669e4f6c1f159a9b6fa0d9

      SHA1

      37b0be703e1bb6c1b0eb06fd25a91724f5ce5264

      SHA256

      935134c9d742e8364884a2647aef3490ddd89aa5c1f99183a57bbc5829fe02c0

      SHA512

      05537dc4d259dc0e0cd9f83b8d816aef4154aedc6c96642c8b7979ee41760d8cb35ccd6eed2f9c5416fa132a53ab9f62bab57cff9800f203906509c86c8c509c

    • C:\Users\Admin\AppData\Local\Temp\chdtr.tlz
      Filesize

      263KB

      MD5

      68e51dc63d26a2e2f8e8bd9a4a0be275

      SHA1

      2616ce912fc994ecabe75b853511b9aa4202fc97

      SHA256

      9f27f632aac3e100bbbb7969deaf2c731c01755c1085e92e80ddd9c360487d76

      SHA512

      574d8864bf4f048be5207f0a71e26e1a8ae5e182f73d5b956c41d5fd703899446824e85f287c8c4f3c50aed21da53596a57435e10f4a9cfd37688e97683fa62d

    • C:\Users\Admin\AppData\Local\Temp\kigtiqm.exe
      Filesize

      872KB

      MD5

      c56b5f0201a3b3de53e561fe76912bfd

      SHA1

      2a4062e10a5de813f5688221dbeb3f3ff33eb417

      SHA256

      237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

      SHA512

      195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

    • C:\Users\Admin\AppData\Local\Temp\xmnxoix.au3
      Filesize

      4KB

      MD5

      0d013f6baac0a09a1fb8e14217317503

      SHA1

      453fba3488930e98d075946a31e5455b84eed5ba

      SHA256

      0a78523b6163a8372ba64e5cc275d68f6582b7ca3a93e3163ad96251cc788d83

      SHA512

      05032c4bbdc56992768a87ebaa9a9f43cb9092df401bb61a20673c1bec3a1f3fe4ee7c55c0572ceac9d862538ac765d0e0577cb63424c5edf137f7948feb8ced

    • memory/1964-8-0x0000000000BC0000-0x0000000000BC2000-memory.dmp
      Filesize

      8KB

    • memory/4208-18-0x00000000030E0000-0x0000000003110000-memory.dmp
      Filesize

      192KB

    • memory/4208-23-0x0000000005D70000-0x0000000005DD6000-memory.dmp
      Filesize

      408KB

    • memory/4208-15-0x0000000000400000-0x0000000000441000-memory.dmp
      Filesize

      260KB

    • memory/4208-17-0x0000000000400000-0x0000000000441000-memory.dmp
      Filesize

      260KB

    • memory/4208-19-0x0000000074CA0000-0x0000000075450000-memory.dmp
      Filesize

      7.7MB

    • memory/4208-12-0x0000000000400000-0x0000000000441000-memory.dmp
      Filesize

      260KB

    • memory/4208-20-0x0000000005EA0000-0x0000000005EB0000-memory.dmp
      Filesize

      64KB

    • memory/4208-21-0x0000000005EA0000-0x0000000005EB0000-memory.dmp
      Filesize

      64KB

    • memory/4208-22-0x0000000006460000-0x0000000006A04000-memory.dmp
      Filesize

      5.6MB

    • memory/4208-14-0x0000000000400000-0x0000000000441000-memory.dmp
      Filesize

      260KB

    • memory/4208-24-0x0000000005EA0000-0x0000000005EB0000-memory.dmp
      Filesize

      64KB

    • memory/4208-25-0x00000000081C0000-0x0000000008252000-memory.dmp
      Filesize

      584KB

    • memory/4208-26-0x0000000008160000-0x000000000816A000-memory.dmp
      Filesize

      40KB

    • memory/4208-27-0x00000000082C0000-0x0000000008310000-memory.dmp
      Filesize

      320KB

    • memory/4208-28-0x0000000008570000-0x0000000008732000-memory.dmp
      Filesize

      1.8MB

    • memory/4208-29-0x0000000074CA0000-0x0000000075450000-memory.dmp
      Filesize

      7.7MB

    • memory/4208-30-0x0000000005EA0000-0x0000000005EB0000-memory.dmp
      Filesize

      64KB

    • memory/4208-31-0x0000000005EA0000-0x0000000005EB0000-memory.dmp
      Filesize

      64KB