Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13-04-2024 19:08

General

  • Target

    1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe

  • Size

    732KB

  • MD5

    73bd35799d62647fb17973ac9f26156e

  • SHA1

    32bf5a89d62ad2566f7c9b58073176223d8a26e6

  • SHA256

    1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569

  • SHA512

    07875aa1e921cdc6c010e069bbc94a87eb5b8d4892ea6050b87688b5d773067eb9c73e5ba8407d147263c44ff366ab7b622eb2c3636aefef78df1a1f40976775

  • SSDEEP

    12288:RDfKb7nH5lrPo37AzHTA63I0ihE4aEJOrNv4gM/RetAseY/XExy8906:xfKbT5lrPo37AzHTA63/cfa74F0tAi/Q

Malware Config

Signatures

  • Detect Neshta payload 6 IoCs
  • Neshta

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

  • 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 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe
    "C:\Users\Admin\AppData\Local\Temp\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe"
      2⤵
      • Executes dropped EXE
      PID:2784

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\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe

    Filesize

    691KB

    MD5

    ced3f8d362a30d0bfb3083e8d4de5b21

    SHA1

    712374a5b0b477a24b06f8d3f87f9aa96e25026b

    SHA256

    80b5a86794bf61b8bb04da495a464135e6f3dee0d79cb59e50fbb16c1c9f5ccb

    SHA512

    5d77d61d38f2a2fc3653f6ed2026f02c838708536696997b710938d1f35b8f700eab6f50fa15283018bcd28e18de3af1576a9f2fc049c300c86d36858ea9f45b

  • memory/2784-11-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB

  • memory/2784-85-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2896-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2896-87-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2896-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2896-89-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2896-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB