Analysis

  • max time kernel
    36s
  • max time network
    35s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-03-2024 11:52

General

  • Target

    Fluxus.exe

  • Size

    7.7MB

  • MD5

    b467c46d660686e75e40341c0c7ff3b2

  • SHA1

    109d3de55143ca891844ea9450c0f724a3f0a6c9

  • SHA256

    755cf8ab4b9d456e9a75fe22b5b54da8de5d8c125e288d96d913cacb9402fafa

  • SHA512

    1d427f295722ae3194b328e3f2ba5abba7f0ef0f30d49a9662360fb4eaaed0cdf70d841eea84b09bae99fd5d1de5de91656a238f7c03985c24b41a8e36f210b1

  • SSDEEP

    196608:nHWp1r9qaKBgngb8KiqYy2+yrTleWDdC7P6hZ0Rxd3:nHWp1r2aq9yPlN0zmYX

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot6483219642:AAFWWWbNgdseifC8eEZUAO7r5AzREdOAdQg/sendMessage?chat_id=6282952772

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 SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 40 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fluxus.exe
    "C:\Users\Admin\AppData\Local\Temp\Fluxus.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4024
    • 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:2244
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4960

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\System.Data.SQLite.dll

    Filesize

    128KB

    MD5

    87e16967b3d83ce0f393bf580aaac9fd

    SHA1

    4fcef4a43b9568615ca441ea2739003366123256

    SHA256

    88d9e93c9a7d0a516d8fdb6440a6c0d7f537e7ba021d623caa9961d40d2476ff

    SHA512

    84ad4aa9dff542bc546c8bebbc230dfb092acc5b88df7fb6357461f945241e195559f20355e151c3b80e563087c84059c66db4ea88e103bc54b0f4ad52f0fbc2

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

    Filesize

    271KB

    MD5

    48659a7389db03a5b15080464cf2e746

    SHA1

    854df29ea26c0610aba91834999a3929616f2a7b

    SHA256

    8e1d929d82cc5bb3d4f959eabddf69e43eeac17a90986c87a1b2bf1626c62dc9

    SHA512

    c3759af061ed7382f16a0769e77197441a441e0b69dd3647413243cfa6f349246a3a8cea34909d6f549be78881dd4c9a91a06a01d839a68343f1859f0bb6e3c9

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

    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

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

    Filesize

    742B

    MD5

    fa05cd1afc380a2beb9e3a265fdb3adb

    SHA1

    a5e551f56a118cd5d79b2ac9b4763f4f9339d942

    SHA256

    3e172ddf7a2f8f3084be360764934356ca436ee2972c536fd791374c93efcb27

    SHA512

    b79ef834df86b848002afa08f23be277596e220c0376ae56d0cc5d06866ce94f3910504eed6524c7edd7b97025ce3398bb44b909b72e914e56052442e024ec0c

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

    Filesize

    1KB

    MD5

    ec93c42d4f37b2e842577736f9a281e7

    SHA1

    74ec0e605635a8204b09d8f4ff450750c56c42f5

    SHA256

    8069baab3faeac6b77aff93e7807594da6c2bf978019634153a0b7a9fbf6188a

    SHA512

    37e528c9e7c4365c555076603a2e7372f40096beefc5a340d6f2b164ffa831d24d4c3bdc707a2b282a363dfe9397d6e8ac02a0f5abae0c24ef7ace3aec77d82a

  • memory/2244-101-0x0000000008100000-0x00000000082C2000-memory.dmp

    Filesize

    1.8MB

  • memory/2244-31-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/2244-83-0x0000000005D80000-0x0000000005DD0000-memory.dmp

    Filesize

    320KB

  • memory/2244-88-0x0000000006CA0000-0x0000000006D08000-memory.dmp

    Filesize

    416KB

  • memory/2244-67-0x00000000061B0000-0x0000000006242000-memory.dmp

    Filesize

    584KB

  • memory/2244-89-0x0000000006D10000-0x0000000007064000-memory.dmp

    Filesize

    3.3MB

  • memory/2244-90-0x0000000006C30000-0x0000000006C7C000-memory.dmp

    Filesize

    304KB

  • memory/2244-36-0x0000000006290000-0x0000000006322000-memory.dmp

    Filesize

    584KB

  • memory/2244-95-0x00000000072B0000-0x00000000072EC000-memory.dmp

    Filesize

    240KB

  • memory/2244-96-0x0000000007070000-0x0000000007091000-memory.dmp

    Filesize

    132KB

  • memory/2244-32-0x00000000058C0000-0x00000000058D0000-memory.dmp

    Filesize

    64KB

  • memory/2244-105-0x0000000008880000-0x0000000008E24000-memory.dmp

    Filesize

    5.6MB

  • memory/2244-30-0x0000000000D60000-0x0000000000DAA000-memory.dmp

    Filesize

    296KB

  • memory/2244-84-0x0000000006070000-0x0000000006092000-memory.dmp

    Filesize

    136KB

  • memory/2244-195-0x0000000008760000-0x00000000087C6000-memory.dmp

    Filesize

    408KB

  • memory/2244-196-0x00000000087D0000-0x0000000008846000-memory.dmp

    Filesize

    472KB

  • memory/2244-197-0x0000000008030000-0x000000000804E000-memory.dmp

    Filesize

    120KB

  • memory/2244-200-0x0000000074BE0000-0x0000000075390000-memory.dmp

    Filesize

    7.7MB

  • memory/4960-201-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-202-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-203-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-207-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-208-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-209-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-210-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-211-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-212-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB

  • memory/4960-213-0x000002A7A7A30000-0x000002A7A7A31000-memory.dmp

    Filesize

    4KB