Resubmissions

04-10-2024 16:44

241004-t8yv3syhpd 10

27-09-2024 16:54

240927-vepkzsvbre 10

27-09-2024 16:44

240927-t86wpavard 10

04-08-2024 18:04

240804-wnq1vawbpg 10

03-08-2024 17:26

240803-vzvbzazekn 10

03-08-2024 16:14

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03-08-2024 15:52

240803-tbarzsseqc 10

31-07-2024 19:40

240731-ydk3yszdpq 10

31-07-2024 10:53

240731-my145atfmf 10

Analysis

  • max time kernel
    437s
  • max time network
    1161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2024 16:44

General

  • Target

    6f4ac0da343abb9dd25d7a27c302a6ab29ed9e7c49123b3c8200138abd3eaea5.exe

  • Size

    3.0MB

  • MD5

    07ab47ba492cb4ce3b9255ecbfb543f7

  • SHA1

    b86f8aeddddd245f0198ad92ff6cee605cbe1d4e

  • SHA256

    6f4ac0da343abb9dd25d7a27c302a6ab29ed9e7c49123b3c8200138abd3eaea5

  • SHA512

    0f161c751011070eca63baf0d544e35adfb7ae23c7bef6ef21684d93ee81d88fa0a83f5f1cc7be10e5a31c2012711298e599e4264d13f6607c9ce7abc8c5ad3a

  • SSDEEP

    49152:fb1ZTEb66GZQJAaYqh3owdV+xYtb/Khu0Ar51hRzEHgR8wfXhxld4sl9O3/TvHv0:5ZQ+6uQhYEom+mtkQ1hRwH2X9i/vFO

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Blocklisted process makes network request 2 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.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Themida packer 9 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • 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
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f4ac0da343abb9dd25d7a27c302a6ab29ed9e7c49123b3c8200138abd3eaea5.exe
    "C:\Users\Admin\AppData\Local\Temp\6f4ac0da343abb9dd25d7a27c302a6ab29ed9e7c49123b3c8200138abd3eaea5.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4672
    • C:\Users\Admin\AppData\Local\Temp\reiver\nasial.exe
      "C:\Users\Admin\AppData\Local\Temp\reiver\nasial.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
        "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: AddClipboardFormatListener
        PID:3660
    • C:\Users\Admin\AppData\Local\Temp\reiver\orihonvp.exe
      "C:\Users\Admin\AppData\Local\Temp\reiver\orihonvp.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Checks computer location settings
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1772
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\rhktbprjui.vbs"
        3⤵
        • Blocklisted process makes network request
        • System Location Discovery: System Language Discovery
        PID:3560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ABA2.tmp

    Filesize

    289B

    MD5

    59386c53f2570f0e370e2ece30ccce7a

    SHA1

    b2fe2bc41bc2c07a33ebbc2e3ec6e30229215d69

    SHA256

    3b845724fd74dd2034ec56d4a2ecacc2dd49e0b388bf68f2e9546b9f8fa8065f

    SHA512

    3dd155da349193d5b1c185c52b2bd5b66edcff318d4fb051799523c490f6a95c9da85ab8dc203334b4630c978b0cb6fa70fcc54497e33ea1b9c91f4497541569

  • C:\Users\Admin\AppData\Local\Temp\nsd8250.tmp\UAC.dll

    Filesize

    14KB

    MD5

    adb29e6b186daa765dc750128649b63d

    SHA1

    160cbdc4cb0ac2c142d361df138c537aa7e708c9

    SHA256

    2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

    SHA512

    b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

  • C:\Users\Admin\AppData\Local\Temp\reiver\nasial.exe

    Filesize

    2.8MB

    MD5

    7cbae878c5e7f1ef96d351489e10d756

    SHA1

    c6117aaa6084399d37f06ab454b7f53470d88b1e

    SHA256

    1aa7778da7aa6b68f649b53c8346a853f598f4c1681cd978bec1cf75ce4accae

    SHA512

    133bda116b1488878911090e5708370a7c79296711cc6886dfe249b565682038d57663b6ee513e9171d0ec47379d973c498e149a7b47f0f2c2c659b4e8221b89

  • C:\Users\Admin\AppData\Local\Temp\reiver\orihonvp.exe

    Filesize

    2.5MB

    MD5

    f68d6d9422b5ae428c794f1da144525b

    SHA1

    2451acebb1cccc35518351b2437b098682fc0143

    SHA256

    cfb90bf559d9835c25f8d65f3bc06aeeb7eaf0ff7abf55963622285eb715bd84

    SHA512

    46972a258fadf5fe3c98c9cf45f3149db4e8bf06b883988cab9992cee0303994e1fd6ef14d9aa82b2c057a5cc300a0508736482ef9776f804a4242054f0c454d

  • C:\Users\Admin\AppData\Local\Temp\rhktbprjui.vbs

    Filesize

    139B

    MD5

    ec5d44e0e1fba9a4ce9b66aebcece086

    SHA1

    db8af3f32ad9a3269456a60c223c538d7a77377f

    SHA256

    50f91a7685020b1aedfb3d61aa4ee9d4ffcf454b5325450be88b4ab149652c93

    SHA512

    70d1100c5f54808279c9a6456420bf9cd2c84e26a662ecdacf548e97d6604c6fcec190df2070e158277a3ed55238d76d5f9e2ad059a6a8138089eceefecdef6f

  • memory/1272-29-0x000000000041A000-0x000000000041C000-memory.dmp

    Filesize

    8KB

  • memory/1272-30-0x0000000000400000-0x000000000079D000-memory.dmp

    Filesize

    3.6MB

  • memory/1772-20-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-18-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-22-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-23-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-21-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-31-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-19-0x00000000774D4000-0x00000000774D6000-memory.dmp

    Filesize

    8KB

  • memory/1772-24-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/1772-45-0x0000000000B10000-0x0000000001188000-memory.dmp

    Filesize

    6.5MB

  • memory/3660-41-0x0000000000400000-0x000000000079D000-memory.dmp

    Filesize

    3.6MB

  • memory/3660-54-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB

  • memory/3660-58-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB

  • memory/3660-57-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB

  • memory/3660-61-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB

  • memory/3660-60-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB

  • memory/3660-63-0x0000000002470000-0x00000000024B8000-memory.dmp

    Filesize

    288KB