Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    17-11-2024 12:54

General

  • Target

    c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.exe

  • Size

    2.7MB

  • MD5

    766ddbb417b22e484957c8f607b15f70

  • SHA1

    73dd6c033ef9b524c3d3041087493db12a332a99

  • SHA256

    c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0

  • SHA512

    972452578809161b58edcfd6f6dfe35a616d90c0c1b31e09b995a5bc1f1dec52c3c9a2f7218c326781e9286287fb4c9ae63ea206e9643ec5b7595a585011c340

  • SSDEEP

    49152:LpRz7GLyYf4jTHgjsBjzO+euu+euaa6aaa6666a666aaaa6aaa6666aUue+OOe+f:Lnz7G2YfCAejVuSvX0vwpzkt/kivUw5

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 2 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.exe
    "C:\Users\Admin\AppData\Local\Temp\c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.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:2656
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2800

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\c757941d3352aca06000f6805a188e965ca885826247b2ca3ee34400eeef22c0N.exe

    Filesize

    2.6MB

    MD5

    06c0e2857a76912a16e3d0355b61f200

    SHA1

    3b8bda39f1a6dcfda8b0136635cb1eb88f756198

    SHA256

    e5bf6a2bf00701e66391dbb5d9bbc8e722b54b00e178ac81d905ec1495acbf9e

    SHA512

    97911a12e7e0a8e6142681d37ca60315012d5db6965013e769b6db02fda2fae3123d7d2166c17e4bdaee0eefb3737293e570076572f17a996adb343907e8f9c5

  • memory/2656-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2656-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2800-12-0x0000000000330000-0x0000000000331000-memory.dmp

    Filesize

    4KB

  • memory/2800-13-0x0000000000400000-0x00000000006E9000-memory.dmp

    Filesize

    2.9MB