Analysis

  • max time kernel
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2023 15:48

General

  • Target

    3a4e46b080f9c467035ef6742f901706.exe

  • Size

    94KB

  • MD5

    3a4e46b080f9c467035ef6742f901706

  • SHA1

    5826921ee02e135eb1c8e4afc2b8500511e4068a

  • SHA256

    17c5ed15c9427a55866762ff40c4930417875fe793d9033ece1f12482e4cf659

  • SHA512

    d5c33c9c2e1c8662ea37c1a02fb458857b21c487fc6594dbda3eb2b25d7880f6282b683f2e44684ab596e1b8d94fdf08325944e7b681fcf167037114a63fc2a2

  • SSDEEP

    1536:kxqjQ+P04wsZLnDrCR47tlDTRc5EPMLbM/ud5tetWvVrbnp3OiT:Rr8WDrCRiPRwBM/O5rv33OiT

Malware Config

Signatures

  • Neshta

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

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

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

  • 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a4e46b080f9c467035ef6742f901706.exe
    "C:\Users\Admin\AppData\Local\Temp\3a4e46b080f9c467035ef6742f901706.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3a4e46b080f9c467035ef6742f901706.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3a4e46b080f9c467035ef6742f901706.exe"
      2⤵
      • Executes dropped EXE
      PID:1132

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe

    Filesize

    149KB

    MD5

    9a0dee3ffe469200080919c75e5f97a0

    SHA1

    7d173710843b1085bbd0e318782465e111743e2d

    SHA256

    a0558074f0abf7057bb05d18c50f70ecd372194666208bc1bc95e206115c7795

    SHA512

    4373a599ad1acdf8e5a1a8a4faf5f20dfa87080f1fa211da70e553b551ee1ad8eb507afeafac0abbb2555a6d639cd13214ddea4cdb45fe6640e9263934d893dd

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3a4e46b080f9c467035ef6742f901706.exe

    Filesize

    53KB

    MD5

    0587e3341014e37ae53f516ade629333

    SHA1

    16615dab13c8aa63c3faaf2f8bee17eec3fbe793

    SHA256

    6752b51cb19d5d3b5be243ceb1d3c908720b91b2e171cad55ceb9d5b37e477eb

    SHA512

    991c65b3a3d496c0b96529ffe6b27ee7928c460d7d0e803e3b58b7a673773ed6459efb28fc153dcf0aec88a98ce91a4e5f62482c5276062a1244470f0c928145

  • memory/1280-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1280-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB