Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 02:28

General

  • Target

    c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.exe

  • Size

    1.2MB

  • MD5

    9f4c208d3be3184681489a318fa65a12

  • SHA1

    d440124ebf7da91ff4e17d8e3d858a18e1e9174b

  • SHA256

    c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de

  • SHA512

    cd473dbf61d65973eae8aeb7d0a9775ae35832f5a2f73a6c0a86db45ac8aed4189b48ed656572d41878bbbaf9cbf4cf78e105ecddad05b2e9a57a27e89aa9a8b

  • SSDEEP

    6144:k9qEDbKW7DL921B4425yxj6jvHJg596s0OEI1CHpDNvIkO/crrWuz0C9:/EDbKW7l75yQOEIKvIArN

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 8 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.exe
    "C:\Users\Admin\AppData\Local\Temp\c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.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:2176
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2324 -s 528
        3⤵
        • Loads dropped DLL
        PID:2688

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\c391f8bc7c54b8ac5e9839b2b3982aaeeda03be34e12569202aa9a6ef3e749de.exe

    Filesize

    1.1MB

    MD5

    5fe1d2d704549bb7c3163d72a6714f60

    SHA1

    22c969b2b573a7f08dbb1810dc532b363a1e1539

    SHA256

    cd163eaf4e3e998b13762cc09760db71be3a74eb13dbc2f2e4b7c709812436a4

    SHA512

    1a8fd8ec2fb047fcef011752897da9cd28955c58ac1edfdb8ce04efd111f8aef6c354e92315384c12345af16fc8b1190bfcdbfff2cc24c970ad749dc8f1a4e1c

  • memory/2176-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2176-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2324-14-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

    Filesize

    4KB

  • memory/2324-15-0x0000000010A00000-0x0000000010B20000-memory.dmp

    Filesize

    1.1MB