Analysis

  • max time kernel
    144s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-03-2024 12:01

General

  • Target

    df1c3a1b70fc8f37ea642c4df3a2f66b.exe

  • Size

    448KB

  • MD5

    df1c3a1b70fc8f37ea642c4df3a2f66b

  • SHA1

    87b9d4bacc776489efb68f762913b76ef86908bf

  • SHA256

    51cfc971849b6d809df4f567616db7f420874a754752490b981134f1d40ff47c

  • SHA512

    a5a3e83d48f6eb0bd1ccbd4f48567c04d66ec1ba11b4afaf55df5f120b186ad3c764dd78b9835f8b2fb37b0d76d3f77ec08657f355c6734960359017e00fb512

  • SSDEEP

    6144:+efG+g1L+8z7eoRDemTD+uf9+GV6eauyGFyInlXYWbgqtS4zbvhdaDz/A7Ah5lL2:+3S8xTiG04nTbcAcDq

Malware Config

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Obfuscated with Agile.Net obfuscator 1 IoCs

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

  • 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
  • Looks up external IP address via web service 2 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\df1c3a1b70fc8f37ea642c4df3a2f66b.exe
    "C:\Users\Admin\AppData\Local\Temp\df1c3a1b70fc8f37ea642c4df3a2f66b.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4440
  • 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=1344 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3292

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\44\Process.txt

      Filesize

      716B

      MD5

      c0d0a9f5afc088956bb550f764f676a7

      SHA1

      70ad04b0c9e549dcc7ede1d1431be3d89e1bf986

      SHA256

      2fd1f0652da5617fb51966672f6ce1efcf69eb92d20310fe01e8124c64e59462

      SHA512

      07378311dd91819e4f83857c5972e290bec0a73f14afefe597b6948b64b38bb6e1aabd710ec69f2611a6f040ceb5d548446b04b3c1af2f655ba77b7b59d454d4

    • C:\ProgramData\44\Process.txt

      Filesize

      1KB

      MD5

      3e0ea6d2feab625e7415c9df81d63d9d

      SHA1

      be92a682d2cd7b2e58dcb946e78374497eeb17e1

      SHA256

      9cdace75f4847d231653543e552b039cb517a9537e5af0f4bcad1e8a40d8ecd6

      SHA512

      268ad3030511383f7e0b5db229c3e72a70f460fdc0bf2843f42cafbc84a547fe57588e4e2d8ddbbeaf53f51fb3ffbc7bb6dd910133344064ef173f53d9f58432

    • memory/4440-0-0x00000000009F0000-0x0000000000A66000-memory.dmp

      Filesize

      472KB

    • memory/4440-1-0x00007FFE933F0000-0x00007FFE93EB1000-memory.dmp

      Filesize

      10.8MB

    • memory/4440-2-0x000000001B780000-0x000000001B790000-memory.dmp

      Filesize

      64KB

    • memory/4440-127-0x000000001C520000-0x000000001C6C9000-memory.dmp

      Filesize

      1.7MB

    • memory/4440-130-0x000000001C520000-0x000000001C6C9000-memory.dmp

      Filesize

      1.7MB

    • memory/4440-131-0x00007FFE933F0000-0x00007FFE93EB1000-memory.dmp

      Filesize

      10.8MB