Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02-01-2025 08:53

General

  • Target

    f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.exe

  • Size

    97KB

  • MD5

    fe62697ff964ff4a45534fbbd5052200

  • SHA1

    d1dbe23ddb744eba40c34af9a724b28dc0c984a7

  • SHA256

    f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123a

  • SHA512

    ea361d247513ea82211f646b0c2c57820c14b8f6cd99407c6db9a48d4d0f8c93ac6b35d6d692a049e79f62f9ed5d5d4f525ce5a8efe4972af9d5ee44cec82f2e

  • SSDEEP

    1536:JxqjQ+P04wsmJCs3I3vkt7tN5rCW5ZurP1iYxbo0qELV8i1GcJpaG:sr85CPstH5rCqOP1iYxpX58VcJpl

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
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 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.

  • 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 3 IoCs

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

  • NSIS installer 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.exe
    "C:\Users\Admin\AppData\Local\Temp\f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.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:2324
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
        "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\3582-490\
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2424

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\f4117d155d789cdb1d44c02e408733d76c58c5fc5b1d46700aabc427ed99123aN.exe

    Filesize

    56KB

    MD5

    b6a18ad46c98fc741cd01aed02356873

    SHA1

    d3d1a047627110c7201b84fc24e18a009b10591b

    SHA256

    a26b303ca24c8a59979ff806cb5dcf562c71526bcf70b2e2df17812633e4086b

    SHA512

    d6e646472745e290db572b181c2a859fd751af99b20a84194677ffca0ba9caf4d9ab5c3d4aed29f9c6c681ab844b3e14efeeb54fe22d66df649ed205ec18eb85

  • \Users\Admin\AppData\Local\Temp\nsoD79B.tmp\System.dll

    Filesize

    11KB

    MD5

    fccff8cb7a1067e23fd2e2b63971a8e1

    SHA1

    30e2a9e137c1223a78a0f7b0bf96a1c361976d91

    SHA256

    6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

    SHA512

    f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

  • memory/2324-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2324-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB