Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2024 18:56

General

  • Target

    Setup.exe

  • Size

    2.2MB

  • MD5

    f15df54a6784030231c5ac44bd99c487

  • SHA1

    ab3e392fc7ac8503ac6013fbe1981f21274ce0c4

  • SHA256

    0eb59683e2dfd231d3a0a4bdf17d9a2c6871e29f99dcef2bef80dcd3006edd86

  • SHA512

    1be6149eb8a0c9a94ae1d92a97256b388f982a9c1021d3c3ec049b6354a5d3c253af2dbb9517ef3c9f1b9600ed18a2f59a6d6b3ab5a94b110dd7d719d48c4321

  • SSDEEP

    49152:wCHFzR0SjCrsYebwHAwKQOCG/nWCGTl7CcL9xjYNaSgu+GtnX:JFzRK4Y/HAwKQ51FZ7HLfjJSgu+GtnX

Malware Config

Extracted

Family

cryptbot

C2

bbu01.pro

Signatures

  • CryptBot

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

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

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\ProgramData\FGgbiX1u & timeout 2 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3396
      • C:\Windows\SysWOW64\timeout.exe
        timeout 2
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\FGgbiX1u\47283761.txt

    Filesize

    148B

    MD5

    c672c5ffd1a94b729484cc279d2a8a93

    SHA1

    3e3ce8ad41d3ffe36d461a21ded8fead5d11e88b

    SHA256

    087e2c68049f6d81393d62c9fbca232111ec9e0411f5cc9ab1e718475581eaea

    SHA512

    969821c1ea8ae7b400e0e603326a3eb76ad22c21572a12b34e50f97f174f53456e937872c1a5980f7401d702c56c00ec0c5fa4d9cdc38b7d2c6200037f12aae3

  • C:\ProgramData\FGgbiX1u\Files\_Info.txt

    Filesize

    8KB

    MD5

    b26278b595c1368030c534214728a200

    SHA1

    e1e7f38f617cbcbcc9ed2701fedb38d395a20f92

    SHA256

    07b95ac6c7f6389599846ccb0d2e6b0b534ca81db194a15cf8c7d3fc6bdd2801

    SHA512

    dde69445b46441dc874a8da581803d6ec18b20955d32c4354dd19d03d9c168dfdb22ab4c73a31051621bd4c43bf171c8f85210ee3b287e8f4c342e7d2b8281ad

  • C:\ProgramData\FGgbiX1u\Files\_Screen.jpg

    Filesize

    51KB

    MD5

    70880c7cae9c1ea2dbaa878414d533ea

    SHA1

    dbcbbf892975c43cc257c03993438d2bc84679b1

    SHA256

    ffe883fd0f629541aa8c7e9a2be3febbdcd342163926fbf15892beead9bb3159

    SHA512

    f3b0692cbd758658938bbfe1c6b657724279a50a616ebf68c57a1c529ff7308ecee2d46dd2f93c8b94046195b6ce251d17c0a6b0841dae67b545c2dc0d824106

  • C:\ProgramData\FGgbiX1u\GtrtMzUaR6S1.zip

    Filesize

    47KB

    MD5

    17ae638891f200d274afc6eafa42cdcc

    SHA1

    7353d7b35db7b1e46ac0974aa47573aa6b61036e

    SHA256

    4801e233d6f44f8dc0552b02de93f04ae68965d56f78a105a5243928ea97e302

    SHA512

    64469efb54e9f0f93b6b9e1b21107acec746dacd527bb7ca3a61345cd720055825491418bc47e4bb1670005aa9d355f1c66f09dfadbb87ff587d8269efe21f80

  • C:\ProgramData\FGgbiX1u\MOZ_CO~1.DB

    Filesize

    96KB

    MD5

    40f3eb83cc9d4cdb0ad82bd5ff2fb824

    SHA1

    d6582ba879235049134fa9a351ca8f0f785d8835

    SHA256

    cdd772b00ae53d4050150552b67028b7344bb1d345bceb495151cc969c27a0a0

    SHA512

    cdd4dbf0b1ba73464cd7c5008dc05458862e5f608e336b53638a14965becd4781cdea595fd6bd18d0bf402dccffd719da292a6ce67d359527b4691dc6d6d4cc2

  • memory/456-155-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-164-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-17-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-15-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-20-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-2-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

    Filesize

    4KB

  • memory/456-3-0x0000000004E00000-0x0000000004E01000-memory.dmp

    Filesize

    4KB

  • memory/456-145-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-151-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-152-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-154-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-0-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-4-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

    Filesize

    4KB

  • memory/456-158-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-161-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-13-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-166-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-169-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-172-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-175-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-178-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-181-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-184-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-187-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-190-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-193-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-195-0x0000000000470000-0x00000000009B9000-memory.dmp

    Filesize

    5.3MB

  • memory/456-5-0x0000000000471000-0x00000000004D0000-memory.dmp

    Filesize

    380KB

  • memory/456-1-0x0000000077254000-0x0000000077256000-memory.dmp

    Filesize

    8KB