Analysis

  • max time kernel
    16s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2024 09:13

General

  • Target

    a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.exe

  • Size

    146KB

  • MD5

    c1778b4bb4a2ae00871c4f62e8d82270

  • SHA1

    040b6a1bac1de614a502e619f98d61145529aed9

  • SHA256

    a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762c

  • SHA512

    dac8fa823687523e365205316dbeba6ec7868dcaeb6a0ae9654a7af26625c8ead982ddc43f3c6c839cefea03e49a10e5d8ab3f6443d750ddf27023c407363ffa

  • SSDEEP

    3072:sr85CkkbAYn2GgYlBYN2fHYTo+zDt8wDSRUTT:k9xbAMpgY3gTF8DRUTT

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.

  • Executes dropped EXE 2 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\a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.exe
    "C:\Users\Admin\AppData\Local\Temp\a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.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:1720
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.exe"
      2⤵
      • Executes dropped EXE
      PID:1208

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\a01b15927f5417ab11cd364adc96890969f2bae8c293a3257530eb6040b9762cN.exe

    Filesize

    105KB

    MD5

    8d72e8d0e4d9b58949565ae2cfb9ca63

    SHA1

    df0473140ef01d371aeacb1e7e6157dc4ac2c8fb

    SHA256

    5083828e38837e1d034d0e567bd5a27a2e6a0fa220af7de7f056667959c7b9f2

    SHA512

    bd0a5eb874b94f3d27ae005c3ba00cc03473555809e06c72b833d56f8b40ce63ea84de1906933e04d37e0f09b2a61552eb8ba7160a9e78d47264d10a5cf967ba

  • memory/1720-84-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1720-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB