Analysis

  • max time kernel
    41s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 22:43

General

  • Target

    4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe

  • Size

    138KB

  • MD5

    1de2c33435a4922486d77a212c36bce0

  • SHA1

    266c55161777379be22a0086d2822b04567685d1

  • SHA256

    4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13

  • SHA512

    ff4bef746b250f00fb78f7242653ac0a9c20a3144945b78ad8c10afae28f289c85d371d1d36b23aa90a39d46275cc38fbf8af1844ad7acf94230a9454d8e5f3c

  • SSDEEP

    1536:JxqjQ+P04wsmJCNJQPDm0xK8i6f0Zn9PRVW8sW45o75IQ+P04wsmJCN:sr85CEPDmZ8tf05iW4u1Ir85C

Malware Config

Signatures

  • Detect Neshta payload 7 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 5 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).

  • Program crash 1 IoCs
  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe
    "C:\Users\Admin\AppData\Local\Temp\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.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:2344
    • C:\Users\Admin\AppData\Local\Temp\3582-490\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2644
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2644 -s 164
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:644

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\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe

    Filesize

    97KB

    MD5

    0f7115cdc71d4ac94f14b5e976ba201d

    SHA1

    e558c2d5058c8ec3f1e472ff57b14bac773364df

    SHA256

    8b4bafe731b81d8193533e525e164150742cb9b5a4e10707d7417a6cf3a82604

    SHA512

    4607c5172d1dd549c0881b69d4aa5c9da4b9ba93faa56aeb11056cb26d614c2e0dc1a7d70c8bde3317ab5595e0874f6ea583d31c90e4a3057fce21cadb7de0fd

  • memory/2344-87-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2344-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2344-89-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2344-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2644-86-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB