Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2025 21:51

General

  • Target

    37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.exe

  • Size

    370KB

  • MD5

    fe26e3f9cdf62f122c77faabe879bd77

  • SHA1

    46814e65d467d88d38518c10709e2ce71287f850

  • SHA256

    37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab

  • SHA512

    4998c6a734ad7a6fa1dcdf3c6e72d480ad6e65a60cac2a1a1dc5666249796effa7a3fc167aa4e711d09b04b3c1f6a30ea7615704d09d61b27246cbd3fd1e2c7b

  • SSDEEP

    6144:k91eFHDi+DZUdHDgKhroPgwl+cq7oq/UUHZiwn9hvjib:eeFHDHCDrokcq7oA59nrk

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 use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.exe
    "C:\Users\Admin\AppData\Local\Temp\37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.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:3068
    • C:\Users\Admin\AppData\Local\Temp\3582-490\37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2744

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\37fe565cf8f3c423a0c8976353518e64dc37f3abc9ad3f3b3f9d4a1137f468ab.exe

    Filesize

    329KB

    MD5

    283488a5c554931fe1b0298457ca61ef

    SHA1

    46de87122d71132aaf5c1d10804a3419b1999089

    SHA256

    9f88c7138b658508fed0dadf826f24c45b7f3048ec4adf6f8a2c8c0d9c053433

    SHA512

    2dd6774685901699d63ac7e2a9630176fdc7b68f98e6964740210916532e8ec8402d19444bc7c2c209a846ed12344316a8b7a98d15beebd717ce249465e8472e

  • memory/3068-83-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3068-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB