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
    04-11-2024 03:23

General

  • Target

    a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe

  • Size

    616KB

  • MD5

    a83e6809836d453aa4be9a7fec5ef750

  • SHA1

    820d02e62f20eea1fcb8d02c1c62c291da23f3c5

  • SHA256

    a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5c

  • SHA512

    d399711069adb2e41a67dffdf7970e3bf8d1a8e98442497a054c007af16361842dc18ade1539e952e40f6cab0b20f9555e8ffdd74e0a2abf41fb7f9f4b5634f7

  • SSDEEP

    12288:rAVnIi3ROwIRuHnOyP0DILbb+zLncNmEqAQOH2mOvbuio1DC:roIihOwIAHnOyP0DILbbGLcNmEqKHliX

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 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.

  • 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\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe
    "C:\Users\Admin\AppData\Local\Temp\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.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:2316
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe"
      2⤵
      • Executes dropped EXE
      PID:2136

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\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe

    Filesize

    575KB

    MD5

    ed2bf66439a4eae91b276587599e3c16

    SHA1

    cdfc99167f5e8521c93b69559856296b82332357

    SHA256

    ca1cec40bb1dec35dca91b7aa7f11f316f25591f75edd7b5860b9d1efaf5c321

    SHA512

    241775b3a79254b1965a2c9b5abc42b201313fa85e980c9e1d616dad6629b05c93ef8c996df3121cfd032e414aab8be8fbc86e0ba2d5c4c9267fc934c5fee656

  • memory/2316-83-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2316-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB