Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2024 06:06

General

  • Target

    88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe

  • Size

    3.2MB

  • MD5

    c6afbbcd26162a388e63cc3d5c010c10

  • SHA1

    5614bc2fcb1ac46da7a33b4dbf3d6351a92c6930

  • SHA256

    88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539

  • SHA512

    5dfedc24b7e640811e09fa27f220054648a9fa6829e7d96e1fd58771aff6491100de2337f3703c6c2b8dca4b4eccbe49b9e81a8f27643518d12a1c5717cf578e

  • SSDEEP

    49152:aShHaVYNjEv3hIUPl1v01s3boMWfOEp9/l0j5NYcVtcht/P5p8gQ:aSkYkRIk7gMDEpb00Ctyn5p8gQ

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • 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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 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 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe
    "C:\Users\Admin\AppData\Local\Temp\88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2120
    • C:\Users\Admin\AppData\Local\Temp\3582-490\88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe"
      2⤵
      • 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
      PID:2324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\88e8e3f3c55f54c6f1550965708c49ccbc3e69b7aeeff3fc1b0c27b63b14a539N.exe

    Filesize

    3.1MB

    MD5

    02f554541e0036d6fd7bf2d333b7f0bf

    SHA1

    6a3f2d00bae392b184c7932f4e394b445ea8223c

    SHA256

    f822d5ee04cb5afb6c9ddf0a760c50196fb5e3b7221a665ac1329988f6565856

    SHA512

    53082de34cbf94ce9bc168dcee968f39abb00b88b4f99e327ab03113c508ffb1514b757f86e5bc4e2d3e0b577f9915e5b4675b7b3f154c1ec83565bd4eb69dcc

  • memory/2120-10-0x0000000002D50000-0x00000000035FC000-memory.dmp

    Filesize

    8.7MB

  • memory/2120-89-0x0000000002D50000-0x00000000035FC000-memory.dmp

    Filesize

    8.7MB

  • memory/2120-90-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2120-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2324-11-0x000000013F5A0000-0x000000013FE4C000-memory.dmp

    Filesize

    8.7MB

  • memory/2324-13-0x00000000775D0000-0x00000000775D2000-memory.dmp

    Filesize

    8KB

  • memory/2324-14-0x000000013F5A0000-0x000000013FE4C000-memory.dmp

    Filesize

    8.7MB

  • memory/2324-15-0x000000013F5A0000-0x000000013FE4C000-memory.dmp

    Filesize

    8.7MB

  • memory/2324-16-0x000000013F5A0000-0x000000013FE4C000-memory.dmp

    Filesize

    8.7MB