Analysis

  • max time kernel
    141s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    23-04-2024 01:58

General

  • Target

    60b31c2e2e564debf4560d50673a23034b4267dba853230a67550540749102bf.exe

  • Size

    1.9MB

  • MD5

    efeb40096e1a60f97a1258b070d49355

  • SHA1

    133f1910684c0fe0f011c65b7e34b9c1c96ad547

  • SHA256

    60b31c2e2e564debf4560d50673a23034b4267dba853230a67550540749102bf

  • SHA512

    ff8728e5c1950b1f0111e738446efcb4462a7472d1bfc2466b25ccee26113e4ea4117eb8176b4e738f0b270ae678995f65785c618524fba1dab465985feac901

  • SSDEEP

    24576:4VjAexEhMSmTVjAexEhdd74MROxnF/grrcI0AilFEvxHPE4QooFI:pGUDaMi6rrcI0AilFEvxHPEy

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1230453187920658442/0DLiOzNARmlV9YkQawqhFddTXmXbAH-u7b6bGKX5-MD8hY4I0upEZ9kZsB7sI4nBhjEX

Extracted

Family

orcus

Botnet

Dup

C2

127.0.0.1:1268

Mutex

8986e5e934d6456b941d30af15cc57c7

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    true

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus main payload 2 IoCs
  • Orcurs Rat Executable 7 IoCs
  • Executes dropped EXE 4 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 2 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\60b31c2e2e564debf4560d50673a23034b4267dba853230a67550540749102bf.exe
    "C:\Users\Admin\AppData\Local\Temp\60b31c2e2e564debf4560d50673a23034b4267dba853230a67550540749102bf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2416
    • C:\Users\Admin\AppData\Local\Temp\Cartex.exe
      "C:\Users\Admin\AppData\Local\Temp\Cartex.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2196
    • C:\Users\Admin\AppData\Local\Temp\Cortex Launcher.exe
      "C:\Users\Admin\AppData\Local\Temp\Cortex Launcher.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2380
      • C:\Users\Admin\AppData\Local\Temp\Cortex.exe
        "C:\Users\Admin\AppData\Local\Temp\Cortex.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:2648
        • C:\Program Files (x86)\Orcus\Orcus.exe
          "C:\Program Files (x86)\Orcus\Orcus.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:1408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Orcus\Orcus.exe.config

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • C:\Users\Admin\AppData\Local\44\Process.txt

    Filesize

    399B

    MD5

    bf74415c252112e42ecd6c06decd966f

    SHA1

    3165fdb0929d6f47668d29dbac51498a5887baf8

    SHA256

    32b90f72a9c19ca2ab66ff470f7a1f24b05a6c81c8805baa6b004051a034e854

    SHA512

    482dbb6c5fe3bce2fa6fdd122440d88b94171ab99457441badcf7fc5965ca9cf91bce1c02181ec97da72f2050cc81cf7519b7c7f75e8c7fc046036c0c9cc9e7e

  • \Users\Admin\AppData\Local\Temp\Cartex.exe

    Filesize

    274KB

    MD5

    b0e26ccf1d3180fecd30a685d22390ad

    SHA1

    d20b553dea1425f5d85b6e1af23ea32c063ed3fb

    SHA256

    71756da4e3e8d02d44656518e3863a5477c197e991e62c785f1e0e8e739f0fe7

    SHA512

    4d2ba5292642e88fd0d52ae386ddcb06bdcd9478d4a594def61e84b57fb5637b97254b81ca7c457a0de43b9c32b62a25e3e2f94fe8061b30126fd966ac9b37e2

  • \Users\Admin\AppData\Local\Temp\Cortex Launcher.exe

    Filesize

    1.3MB

    MD5

    44566fbbb0f447a1560a614fec6a6988

    SHA1

    3a76bf992012c775e8cc5a6b54f6417b2cdc8552

    SHA256

    daa00b164ed37d0f65c9d54095d67405e588163ddcac190240fd9316b411231c

    SHA512

    8ba77aba1c1b17d357854d7531ea3786786c9495959a2ca033abcce6187cc6117c45765f246918cf34408e221a871e4c56359f38d8da5871e327543fe148d6b3

  • \Users\Admin\AppData\Local\Temp\Cortex.exe

    Filesize

    910KB

    MD5

    9fc39d72aad030cc4734b024dea538f1

    SHA1

    bc5ce1c73b404ca308c327b49696a6eb3da8089f

    SHA256

    8d55cd0abe78a6d6bb808debcae912757451129b8a99eacca0a625fe4cff4b76

    SHA512

    68ff6779be0290d774fe28c0b760f815934576893eff59af135dad006578dc294fd79e2d300ac812be5b4509cd4f84581bf0bbbd400ffdb8f303b2e653523277

  • memory/1408-66-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/1408-65-0x0000000004D40000-0x0000000004D80000-memory.dmp

    Filesize

    256KB

  • memory/1408-101-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/1408-67-0x0000000000670000-0x0000000000688000-memory.dmp

    Filesize

    96KB

  • memory/1408-63-0x0000000000230000-0x000000000031A000-memory.dmp

    Filesize

    936KB

  • memory/1408-100-0x0000000004D40000-0x0000000004D80000-memory.dmp

    Filesize

    256KB

  • memory/1408-68-0x0000000000A30000-0x0000000000A40000-memory.dmp

    Filesize

    64KB

  • memory/2196-30-0x0000000000AC0000-0x0000000000B40000-memory.dmp

    Filesize

    512KB

  • memory/2196-99-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

    Filesize

    9.9MB

  • memory/2196-29-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

    Filesize

    9.9MB

  • memory/2196-27-0x0000000000BE0000-0x0000000000C2A000-memory.dmp

    Filesize

    296KB

  • memory/2380-25-0x0000000000400000-0x0000000000548000-memory.dmp

    Filesize

    1.3MB

  • memory/2416-14-0x0000000000400000-0x00000000005E9000-memory.dmp

    Filesize

    1.9MB

  • memory/2648-49-0x0000000000940000-0x000000000099C000-memory.dmp

    Filesize

    368KB

  • memory/2648-64-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2648-53-0x0000000000470000-0x0000000000478000-memory.dmp

    Filesize

    32KB

  • memory/2648-52-0x0000000000450000-0x0000000000462000-memory.dmp

    Filesize

    72KB

  • memory/2648-33-0x0000000004C00000-0x0000000004C40000-memory.dmp

    Filesize

    256KB

  • memory/2648-31-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2648-32-0x0000000000250000-0x000000000025E000-memory.dmp

    Filesize

    56KB

  • memory/2648-28-0x0000000000E30000-0x0000000000F1A000-memory.dmp

    Filesize

    936KB