Analysis

  • max time kernel
    151s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20-11-2022 11:51

General

  • Target

    1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe

  • Size

    896KB

  • MD5

    3b028c11938729ccf0b6e6b7ed0d2c98

  • SHA1

    f931b1b1c27c7e3363872eab75296caeb2a70e1a

  • SHA256

    1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc

  • SHA512

    4669b38783ca9faf2aef1a1df1e5e49e2bbeb453ef4d5039bfa734f0a40becb472713fbe4551c2b3af67adcb95c9f9f0a3b4edb427d0f74070bc0d88c9e9f6ed

  • SSDEEP

    12288:L60d9NVns6l79Ieyv0S0rzokaGbbbbbDDDbDu:Lfdvts6HI1NHkaGbbbbbDDDbDu

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 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). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe
    "C:\Users\Admin\AppData\Local\Temp\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe"
      2⤵
      • Executes dropped EXE
      PID:604

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe
    Filesize

    856KB

    MD5

    ca0d26ee9a94721c968f1b9a9697094f

    SHA1

    4c2dab7d11f51b8bc7f984d550614f65ee07e210

    SHA256

    a811f7f0cdcd54adf984c91a681fcd7028c00217bcec62c08e3ec899bd439a8c

    SHA512

    d95fdc7eec02ef2dd5bbf2e94b17f20ee5e7299ffc26d80c904650efbbaa92e015c3d683c96c20e730a6f9b2db70e092097606c203bbafd2ea213d62d9544340

  • \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\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe
    Filesize

    856KB

    MD5

    ca0d26ee9a94721c968f1b9a9697094f

    SHA1

    4c2dab7d11f51b8bc7f984d550614f65ee07e210

    SHA256

    a811f7f0cdcd54adf984c91a681fcd7028c00217bcec62c08e3ec899bd439a8c

    SHA512

    d95fdc7eec02ef2dd5bbf2e94b17f20ee5e7299ffc26d80c904650efbbaa92e015c3d683c96c20e730a6f9b2db70e092097606c203bbafd2ea213d62d9544340

  • \Users\Admin\AppData\Local\Temp\3582-490\1d4652c4be48cc6672002f4cd273d850c0fb67d9edd79d12f65e82ca9e2f4bdc.exe
    Filesize

    856KB

    MD5

    ca0d26ee9a94721c968f1b9a9697094f

    SHA1

    4c2dab7d11f51b8bc7f984d550614f65ee07e210

    SHA256

    a811f7f0cdcd54adf984c91a681fcd7028c00217bcec62c08e3ec899bd439a8c

    SHA512

    d95fdc7eec02ef2dd5bbf2e94b17f20ee5e7299ffc26d80c904650efbbaa92e015c3d683c96c20e730a6f9b2db70e092097606c203bbafd2ea213d62d9544340

  • memory/604-57-0x0000000000000000-mapping.dmp
  • memory/604-60-0x0000000000400000-0x00000000004C5000-memory.dmp
    Filesize

    788KB

  • memory/2020-54-0x0000000075451000-0x0000000075453000-memory.dmp
    Filesize

    8KB

  • memory/2020-59-0x0000000002790000-0x0000000002855000-memory.dmp
    Filesize

    788KB