Analysis

  • max time kernel
    142s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2023 05:41

General

  • Target

    05e14cea2c46626a6cd43853ee1c0d73.exe

  • Size

    795KB

  • MD5

    05e14cea2c46626a6cd43853ee1c0d73

  • SHA1

    da7bb1a996ab6bc87167cda11bd7f135fbb798a9

  • SHA256

    4af79018e162a331be3bea41ad6b7e5c17bb0d3d24e1b25abf0b11382bf36072

  • SHA512

    693a114171d4e12cf5895b0789b7d594566fce44c9dd8d6ed294cbcc944d7823c9608706a7aba5cb841efe36fb7e07523a7ce7b1370a936f9fe0ca0ca6a87237

  • SSDEEP

    24576:nfR71zCvirJFC8u8G4TYsSgMzAJTGwWWTtH:nfR71zCvi9FC8u8G4cspAcT9t

Malware Config

Extracted

Family

cryptbot

C2

http://ernjxs12.top/gate.php

Attributes
  • payload_url

    http://ovaxlo01.top/chavez.dat

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 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.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 17 IoCs

    Detects Themida, an advanced Windows software protection system.

  • 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.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05e14cea2c46626a6cd43853ee1c0d73.exe
    "C:\Users\Admin\AppData\Local\Temp\05e14cea2c46626a6cd43853ee1c0d73.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4664
    • C:\Users\Admin\AppData\Local\Temp\05e14cea2c46626a6cd43853ee1c0d73.exe
      "C:\Users\Admin\AppData\Local\Temp\05e14cea2c46626a6cd43853ee1c0d73.exe"
      2⤵
      • Checks computer location settings
      • Maps connected drives based on registry
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3404
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c C:\Users\Admin\AppData\Roaming\2F433E85485B96B3\chavez.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3040
        • C:\Users\Admin\AppData\Roaming\2F433E85485B96B3\chavez.exe
          C:\Users\Admin\AppData\Roaming\2F433E85485B96B3\chavez.exe
          4⤵
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4856
          • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
            "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            PID:4432
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\05e14cea2c46626a6cd43853ee1c0d73.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4244
        • C:\Windows\SysWOW64\timeout.exe
          timeout -t 5
          4⤵
          • Delays execution with timeout.exe
          PID:2816

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\9D54.tmp
    Filesize

    32B

    MD5

    6bb6e374b5dbd021622648b4d4e9afc7

    SHA1

    df356bb84780e332c960769d552f67d1f5221cce

    SHA256

    6546a2ec37419190b5f256f2c09efd90f8dd11fe98e5ae4521f8e07ecd64a2aa

    SHA512

    42b05356304dbbf2dd1ba7c7bc8dd2fcfc908d80fcd7c25771a3722ac946fd04575591d530e802799f8c17d9622db361f76b69c3985fd1ee63fce38777938644

  • C:\Users\Admin\AppData\Local\Temp\9F9A.tmp
    Filesize

    71KB

    MD5

    92d24961d2ebaacf1ace5463dfc9930d

    SHA1

    99ffaf6904ab616c33a37ce01d383e4a493df335

    SHA256

    9013688dec264c615178e151c2eb5f0b2eb9fe8cfad867b311d8581d921c73f3

    SHA512

    77598c77f219ab5234b8b84bcfe873f40e7464b224fac3c8568b300d3f2563f7ef5ad9ec5cccc0d719e7d3e489a164b04b6b36316196afea0b8051de3c751cc7

  • C:\Users\Admin\AppData\Local\Temp\A766.tmp
    Filesize

    2KB

    MD5

    dce9b749d38fdc247ab517e8a76e6102

    SHA1

    d6c5b6548e1a3da3326bd097c50c49fc7906be3f

    SHA256

    5087b8c7f2cecceac61d7bd02b939888cf2cc5a452676f28fd5c076eb1ae7ea7

    SHA512

    56c276f0a070da656c98520aa720994d78f1bf0bbb085a5f6fb4fd18fed2bbba1eb8e97b54d58eaa9a978d21d64678170f49c020feb19d8545d158a2d8d58446

  • C:\Users\Admin\AppData\Roaming\2F433E85485B96B3\chavez.exe
    Filesize

    2.7MB

    MD5

    b20856ec703ece334bf18db476027bdb

    SHA1

    c9429cd83bb8c6bc74cc6644f1d16c33a69b6775

    SHA256

    e5bc9be853ca473ae7deb7619052c2ff8ff55526dd046f5e2c5c92d44625aaaa

    SHA512

    073c3442972215724581b5c92b4e784a0273366a72a8100b33c8d32d5a22513022e8db6ebf3ca6f970c6541e5450ba3ab810562f283d11e186a3e899fc50e149

  • C:\Users\Admin\AppData\Roaming\2F433E85485B96B3\chavez.exe
    Filesize

    2.7MB

    MD5

    b20856ec703ece334bf18db476027bdb

    SHA1

    c9429cd83bb8c6bc74cc6644f1d16c33a69b6775

    SHA256

    e5bc9be853ca473ae7deb7619052c2ff8ff55526dd046f5e2c5c92d44625aaaa

    SHA512

    073c3442972215724581b5c92b4e784a0273366a72a8100b33c8d32d5a22513022e8db6ebf3ca6f970c6541e5450ba3ab810562f283d11e186a3e899fc50e149

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    Filesize

    2.7MB

    MD5

    b20856ec703ece334bf18db476027bdb

    SHA1

    c9429cd83bb8c6bc74cc6644f1d16c33a69b6775

    SHA256

    e5bc9be853ca473ae7deb7619052c2ff8ff55526dd046f5e2c5c92d44625aaaa

    SHA512

    073c3442972215724581b5c92b4e784a0273366a72a8100b33c8d32d5a22513022e8db6ebf3ca6f970c6541e5450ba3ab810562f283d11e186a3e899fc50e149

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    Filesize

    2.7MB

    MD5

    b20856ec703ece334bf18db476027bdb

    SHA1

    c9429cd83bb8c6bc74cc6644f1d16c33a69b6775

    SHA256

    e5bc9be853ca473ae7deb7619052c2ff8ff55526dd046f5e2c5c92d44625aaaa

    SHA512

    073c3442972215724581b5c92b4e784a0273366a72a8100b33c8d32d5a22513022e8db6ebf3ca6f970c6541e5450ba3ab810562f283d11e186a3e899fc50e149

  • memory/3404-134-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3404-135-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3404-136-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3404-234-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/3404-133-0x0000000000400000-0x00000000004CC000-memory.dmp
    Filesize

    816KB

  • memory/4432-249-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-250-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-251-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-252-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-253-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-254-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4432-255-0x0000000000800000-0x0000000000EF0000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-242-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-243-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-241-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-247-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-240-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB

  • memory/4856-239-0x00000000000A0000-0x0000000000790000-memory.dmp
    Filesize

    6.9MB