Analysis

  • max time kernel
    48s
  • max time network
    57s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-03-2024 18:34

General

  • Target

    Installer.exe

  • Size

    7.7MB

  • MD5

    9f4f298bcf1d208bd3ce3907cfb28480

  • SHA1

    05c1cfde951306f8c6e9d484d3d88698c4419c62

  • SHA256

    bf7057293d871cac087daab42daf22c1737a1df6adc7b7963989658f3b65f4cc

  • SHA512

    4c763c3b6d4884f77083db5ccada59bc57803b3226294eff2ec3db8f2121ac01ee240b0e822cb090f5320ce40df545b477e323efabdbca31722731adc4b46806

  • SSDEEP

    98304:Rgl47z3Aldea5a/OhtJeq+4NK+dG7M0mWZsE6+YhU+dbkh4yiMP0Q:H/wld79ht+j1M0mWZsE6+YASy10Q

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot6540906397:AAG08fPgT-V7I17vtz49STaZEuwqXqKshuM/sendMessage?chat_id=5445185021

Signatures

  • BlackGuard

    Infostealer first seen in Late 2021.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 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
  • Looks up external IP address via web service 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Installer.exe
    "C:\Users\Admin\AppData\Local\Temp\Installer.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4420
    • C:\Users\Admin\AppData\Local\Temp\v2.exe
      "C:\Users\Admin\AppData\Local\Temp\v2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2248
  • 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=4004 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4144

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Newtonsoft.Json.dll

      Filesize

      571KB

      MD5

      169b6d383b7c650ab3ae2129397a6cf3

      SHA1

      fcaef7defb04301fd55fb1421bb15ef96d7040d6

      SHA256

      b896083feb2bdedc1568b62805dbd354c55e57f2d2469a52aec6c98f4ec2dedf

      SHA512

      7a7a7bdb508b8bf177249251c83b65a2ef4a5d8b29397cab130cb8444b23888678673a9a2e4b1c74cc095b358f923b9e7e5a91bfa8c240412d95765851f1dd87

    • C:\Users\Admin\AppData\Local\Temp\SQLite.Interop.dll

      Filesize

      1.3MB

      MD5

      0a1e95b0b1535203a1b8479dff2c03ff

      SHA1

      20c4b4406e8a3b1b35ca739ed59aa07ba867043d

      SHA256

      788d748b4d35dfd091626529457d91e9ebc8225746211086b14fb4a25785a51e

      SHA512

      854abcca8d807a98a9ad0ca5d2e55716c3ce26fae7ee4642796baf415c3cfad522b658963eafe504ecaed6c2ecdcdf332c9b01e43dfa342fcc5ca0fbedfe600e

    • C:\Users\Admin\AppData\Local\Temp\System.Data.SQLite.dll

      Filesize

      410KB

      MD5

      056d3fcaf3b1d32ff25f513621e2a372

      SHA1

      851740bca46bab71d0b1d47e47f3eb8358cbee03

      SHA256

      66b64362664030bff1596cda2ec5bd5df48cc7c8313c32f771db4aa30a3f86f9

      SHA512

      ce47c581538f48a46d70279a62c702195beacbfafb48a5a862b3922625fe56f6887d1679c6d9366f946d3d2124cb31c2a3eacbbd14d601ea56e66575cdf46180

    • C:\Users\Admin\AppData\Local\Temp\v2.exe

      Filesize

      271KB

      MD5

      3f62213d184b639a0a62bcb1e65370a8

      SHA1

      bbf50b3c683550684cdb345d348e98fbe2fcafe0

      SHA256

      c692dfc29e70a17cabc19561e8e2662e1fe32fdba998a09fe1a8dc2b7e045b34

      SHA512

      0cd40d714e6a6ebd60cc0c8b0e339905a5f1198a474a531b1794fb562f27053f118718cc68b9652fef3411906f9d8ad22d0253af256fa1922133e9907298e803

    • C:\Users\Admin\AppData\Roaming\XuRuLVJXZJBPPYYQNPR.Admin\Browsers\Firefox\Bookmarks.txt

      Filesize

      105B

      MD5

      2e9d094dda5cdc3ce6519f75943a4ff4

      SHA1

      5d989b4ac8b699781681fe75ed9ef98191a5096c

      SHA256

      c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

      SHA512

      d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

    • C:\Users\Admin\AppData\Roaming\XuRuLVJXZJBPPYYQNPR.Admin\Process.txt

      Filesize

      1KB

      MD5

      5f50831ee9bf59a09be6cf5ed8b0b0d3

      SHA1

      61a331966c40990604432851811609838e528392

      SHA256

      48aeb25fcc0a70081d74dd81c8ca484f6ff84d24ae5e0601833d4de4086635a7

      SHA512

      2dcc3afdfb587721fa57d4fa3054f3ca0da4d7d68c4c547be3c6f8355a6e18037c8f2643ba67eac99cb8c99b203356a1981d6d3b0fb3e3ffb60d443a92410203

    • memory/2248-87-0x0000000006340000-0x0000000006694000-memory.dmp

      Filesize

      3.3MB

    • memory/2248-93-0x00000000057B0000-0x00000000057EC000-memory.dmp

      Filesize

      240KB

    • memory/2248-41-0x00000000053B0000-0x0000000005442000-memory.dmp

      Filesize

      584KB

    • memory/2248-82-0x0000000004E90000-0x0000000004EB2000-memory.dmp

      Filesize

      136KB

    • memory/2248-33-0x0000000005A60000-0x0000000005AF2000-memory.dmp

      Filesize

      584KB

    • memory/2248-86-0x0000000005330000-0x0000000005398000-memory.dmp

      Filesize

      416KB

    • memory/2248-32-0x0000000004E80000-0x0000000004E90000-memory.dmp

      Filesize

      64KB

    • memory/2248-88-0x00000000056A0000-0x00000000056EC000-memory.dmp

      Filesize

      304KB

    • memory/2248-31-0x00000000752F0000-0x0000000075AA0000-memory.dmp

      Filesize

      7.7MB

    • memory/2248-70-0x0000000004FE0000-0x0000000005030000-memory.dmp

      Filesize

      320KB

    • memory/2248-94-0x0000000005800000-0x0000000005821000-memory.dmp

      Filesize

      132KB

    • memory/2248-99-0x00000000076E0000-0x00000000078A2000-memory.dmp

      Filesize

      1.8MB

    • memory/2248-103-0x0000000007E60000-0x0000000008404000-memory.dmp

      Filesize

      5.6MB

    • memory/2248-30-0x0000000000390000-0x00000000003DA000-memory.dmp

      Filesize

      296KB

    • memory/2248-202-0x0000000007D40000-0x0000000007DA6000-memory.dmp

      Filesize

      408KB

    • memory/2248-203-0x00000000078B0000-0x0000000007926000-memory.dmp

      Filesize

      472KB

    • memory/2248-204-0x0000000007680000-0x000000000769E000-memory.dmp

      Filesize

      120KB

    • memory/2248-207-0x00000000752F0000-0x0000000075AA0000-memory.dmp

      Filesize

      7.7MB