Analysis

  • max time kernel
    16s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2024 21:20

General

  • Target

    38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.exe

  • Size

    101KB

  • MD5

    a1c903b117a668d2c27ea8431d64c50e

  • SHA1

    0ab85f3d59acfc16b1aa19562ba1a6035e32e97e

  • SHA256

    38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca

  • SHA512

    1551e8fe2bba57cd9eb878f00800c9502a9f82f63336d6fd58bf49814fba70a9532360a69d6a779ac9e3f0c99bea53a8e202702e70ce229f7b5f411352d48efe

  • SSDEEP

    3072:sr85CER+yUYDKM2DLYCwPFCh+AbwygzI0BpGveKdJ35L4+WRO:k9EeLlBV

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\38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.exe
    "C:\Users\Admin\AppData\Local\Temp\38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.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:2296
    • C:\Users\Admin\AppData\Local\Temp\3582-490\38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.exe"
      2⤵
      • Executes dropped EXE
      PID:2644

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\38b1381c3c86d27479bde14ffcf8b004739328a73574d7d139d02e538ca415ca.exe

    Filesize

    61KB

    MD5

    ab7a32c0837d49e64b99f8557dac503a

    SHA1

    1e78c171214299e2f50a1d4dcfe63e8e935a1350

    SHA256

    f5fa36d6174d29f930462de1beaf85ca19769bde72a41b7fd37892f8d7cc7e3e

    SHA512

    353b564888f9d842249d8a1e79f43b743637658f4b718826fdbbcc24dd3df7c3000ba5132a542099e47b0d087e13f7fd3d0868dd419f68347f242aa98568b8db

  • memory/2296-90-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2296-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2644-11-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

    Filesize

    4KB

  • memory/2644-12-0x000000013F5B0000-0x000000013F5C2000-memory.dmp

    Filesize

    72KB