Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    10-12-2023 13:46

General

  • Target

    2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe

  • Size

    89KB

  • MD5

    c96aaea26eb68728d110271aff839957

  • SHA1

    738890a45ffe8e3f2972628c53eb0d3ef5d51390

  • SHA256

    fdfc6a52ba1cba4c242d0eb70fdcbaf2eb30dce8a39cecf179956457033730a6

  • SHA512

    292c1d579781655ab431eb5de949f69d84a6a73d9c50fa80b6a6b7ca5c7afd8e57e4ba49c12ac4d18d72de40ed5ba213ef62c4024e4bc932421071c9813b319a

  • SSDEEP

    1536:JxqjQ+P04wsmJCJygB2korxag318HxZATvnsblYOwwUB:sr85CJyS2koVp318RZEvsbyOCB

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • MAKOP ransomware payload 4 IoCs
  • Makop

    Ransomware family discovered by @VK_Intel in early 2020.

  • 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
  • Loads dropped DLL 3 IoCs
  • Modifies system executable filetype association 2 TTPs 1 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe"
      2⤵
      • Executes dropped EXE
      PID:540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • C:\Users\Admin\AppData\Local\Temp\3582-490\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe

    Filesize

    49KB

    MD5

    85133a404d3fb4a98da14bdd4f08c148

    SHA1

    b62b4102da9112e3d77b530508424611efd3225e

    SHA256

    4e0ab00838f4f48eae4e1ee2f703bce382eca68e2ceff480379cb5ac90b83273

    SHA512

    dd0d892552983c9f2bc39b91f6e5c863caac8ad6d5ddb71dffa14c5bd7f12fff7418c32e17135fbbd483213d515723a0c74b5db1aeefeb296fa9214b86d374b8

  • C:\Users\Admin\AppData\Local\Temp\3582-490\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe

    Filesize

    49KB

    MD5

    85133a404d3fb4a98da14bdd4f08c148

    SHA1

    b62b4102da9112e3d77b530508424611efd3225e

    SHA256

    4e0ab00838f4f48eae4e1ee2f703bce382eca68e2ceff480379cb5ac90b83273

    SHA512

    dd0d892552983c9f2bc39b91f6e5c863caac8ad6d5ddb71dffa14c5bd7f12fff7418c32e17135fbbd483213d515723a0c74b5db1aeefeb296fa9214b86d374b8

  • \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\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe

    Filesize

    49KB

    MD5

    85133a404d3fb4a98da14bdd4f08c148

    SHA1

    b62b4102da9112e3d77b530508424611efd3225e

    SHA256

    4e0ab00838f4f48eae4e1ee2f703bce382eca68e2ceff480379cb5ac90b83273

    SHA512

    dd0d892552983c9f2bc39b91f6e5c863caac8ad6d5ddb71dffa14c5bd7f12fff7418c32e17135fbbd483213d515723a0c74b5db1aeefeb296fa9214b86d374b8

  • \Users\Admin\AppData\Local\Temp\3582-490\2023-12-07_c96aaea26eb68728d110271aff839957_makop_neshta.exe

    Filesize

    49KB

    MD5

    85133a404d3fb4a98da14bdd4f08c148

    SHA1

    b62b4102da9112e3d77b530508424611efd3225e

    SHA256

    4e0ab00838f4f48eae4e1ee2f703bce382eca68e2ceff480379cb5ac90b83273

    SHA512

    dd0d892552983c9f2bc39b91f6e5c863caac8ad6d5ddb71dffa14c5bd7f12fff7418c32e17135fbbd483213d515723a0c74b5db1aeefeb296fa9214b86d374b8

  • memory/2512-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2512-87-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2512-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2512-90-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB