Analysis

  • max time kernel
    30s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 19:34

General

  • Target

    275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe

  • Size

    242KB

  • MD5

    e543579498fe9bdbd389d43d7dd2356f

  • SHA1

    d7e5bcf09a2d19eaaecac1afa969515f10d587d3

  • SHA256

    275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa

  • SHA512

    e78c23fffb691252d89e69ece2f7ef04cd064ec22440370bed24d435bc5d192403dd228ce50807b2def90a0945b22129610ef838121077d5ba2f37ba250e44d1

  • SSDEEP

    3072:sr85CGVfh0eYSlkiKJck+HCwRpfblkrxf/sybuN5kGFcKqz1ZzeqI:k9GVfhjYSlgcBlUf/bb45rN

Malware Config

Signatures

  • Detect Neshta payload 4 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 Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe
    "C:\Users\Admin\AppData\Local\Temp\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.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:1996
    • C:\Users\Admin\AppData\Local\Temp\3582-490\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of AdjustPrivilegeToken
      PID:1864

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\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe

    Filesize

    202KB

    MD5

    431cd1334dd929f1c30d8132cad6d19b

    SHA1

    b573e965a4ad180fe691027011e03550ad3072cc

    SHA256

    4d1ae220c9cf6d9bd8d1c94518b630ef04170c597c69a6fed6bf9bbdf70f957f

    SHA512

    8a11d721dbdf5abc09e29e94100dc837bc3f489de6a8aab292e5d080092e357c57ab2e671b08b1f39b77f6fa7cecb2a591250316ca928ef300584fff344ba99e

  • memory/1864-11-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/1996-84-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1996-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1996-87-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB