Analysis

  • max time kernel
    118s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2024 10:41

General

  • Target

    virussign.com_c258627dc4713143f84e08683d0b75d0.exe

  • Size

    5.6MB

  • MD5

    c258627dc4713143f84e08683d0b75d0

  • SHA1

    ce737c10059a33305ea08be0189c949d5f282c88

  • SHA256

    d6d6f0e865aa4d08871752567f95645ddd966b1a044f048f9f6940a3560c7fd6

  • SHA512

    c3b51312fdc60579a524f6c398b1aff8c0a0dadb0ed893bb6bb6030756e7b00aa6cf7db0848fa93953ff8b1f2d1c18c5494aeaad11ce5bb5367fe7cd458a88b3

  • SSDEEP

    98304:3WpYFiMWrWb3axxkSNGFt01gP3nNqiJ+Jhki7:GpsV3axxzN806vNLQ7

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 2 IoCs
  • Loads dropped DLL 3 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
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\virussign.com_c258627dc4713143f84e08683d0b75d0.exe
    "C:\Users\Admin\AppData\Local\Temp\virussign.com_c258627dc4713143f84e08683d0b75d0.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:2248
    • C:\Users\Admin\AppData\Local\Temp\3582-490\virussign.com_c258627dc4713143f84e08683d0b75d0.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\virussign.com_c258627dc4713143f84e08683d0b75d0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Users\Admin\AppData\Local\Temp\3582-490\virussign.com_c258627dc4713143f84e08683d0b75d0.exe
        C:\Users\Admin\AppData\Local\Temp\3582-490\virussign.com_c258627dc4713143f84e08683d0b75d0.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win64 --annotation=prod=OperaDesktopGX --annotation=ver=95.0.4635.88 --initial-client-data=0x144,0x148,0x14c,0x118,0x150,0x14045dbf8,0x14045dc08,0x14045dc18
        3⤵
        • Executes dropped EXE
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2664

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

  • C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports\reports\0b9928a3-88f3-4021-b384-69d37572561c.dmp

    Filesize

    176KB

    MD5

    33f54c03d434649418a64fe7c1e049cb

    SHA1

    2611c9a4cd45acf141ed64af0893765154342c54

    SHA256

    347ca0f77a2621d5b07b4c9c059af9901c983fc82bc355e9b71351cae2db7c2a

    SHA512

    e18300ad269659dc82b45a0eff4494abcb4124dc1d400e9e3748bb040632e57a0e0523c0a0d9a438674dc112d36be19ee6522a4fb344a6fd2a31fb2b75a2f6b9

  • C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports\settings.dat

    Filesize

    40B

    MD5

    bc2cb996b206ef3258c324e6cea0751a

    SHA1

    0dec9f08629485ba2b95e4e05d54a2e015856ce1

    SHA256

    1f2c2789adf06b0262ddfa556b39478a8d1574ffa3742379badb413cd12e21cd

    SHA512

    7d23b01ce32fed8cb903f7505f4211d5d01001edeb3b495686cc95173086de2c9232e9d223782a66ccce02bfbabe88205186d34667ce6e2a409c9f9b86e905c5

  • \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\virussign.com_c258627dc4713143f84e08683d0b75d0.exe

    Filesize

    5.6MB

    MD5

    386238555736770273cc52c7b62992d1

    SHA1

    eabd86814cf03cf3a1323c58cdfba914e3505ccc

    SHA256

    16ba4e3b2788a938e2ce81b2d6aedeaf35926b1d03573bf6574423cd4d39ab85

    SHA512

    ddad84d886a803a9c978665fa126c32671719edf8504e42b8ace0b161d14d982501f8fc45490b409af548a24a54a71ed19a9b8c1394cda7c9be018c7d34afa9e

  • memory/2248-106-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2248-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB