Analysis

  • max time kernel
    148s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-02-2025 22:00

General

  • Target

    39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe

  • Size

    265KB

  • MD5

    4f49ef21a469a52352953ce99e0cf4b6

  • SHA1

    e1bf62cd4f3845ca47bf95e12e1bef0733d53785

  • SHA256

    39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362

  • SHA512

    139c76f25826eb408077ae001bf5c3305531846ee43fce4800c072f8174d47b345a673e3f11834a69c186634357f020c6372826dd1340ed5721b3e38d3ae4442

  • SSDEEP

    6144:k9t5IonvkFplmiWZ7KzHzXY4jqiKofzA3rSH/cuJS6B+jLNzNRsrWhrJkK/EqAik:vonvkFplmiWZ7AjY4jqiKofzA3rSH/ca

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe
    "C:\Users\Admin\AppData\Local\Temp\39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe"
    1⤵
    • Checks computer location settings
    • 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:1500
    • C:\Users\Admin\AppData\Local\Temp\3582-490\39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe"
      2⤵
      • Executes dropped EXE
      PID:412
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7RjdEMjQzNDctOTFGQi00MjRGLUIxNzMtRjAxMUY3QTVDMjk1fSIgdXNlcmlkPSJ7OUUxRkFBMzUtQTkwNi00Qjg3LTlBNDItMEVENEM5MDhCMzQ3fSIgaW5zdGFsbHNvdXJjZT0ibGltaXRlZCIgcmVxdWVzdGlkPSJ7QzNCMDdCNTctQjU1Ni00RTg2LThDNTEtOTM3QjFFQTlCMzRCfSIgZGVkdXA9ImNyIiBkb21haW5qb2luZWQ9IjAiPjxodyBsb2dpY2FsX2NwdXM9IjIiIHBoeXNtZW1vcnk9IjQiIGRpc2tfdHlwZT0iMiIgc3NlPSIxIiBzc2UyPSIxIiBzc2UzPSIxIiBzc3NlMz0iMSIgc3NlNDE9IjEiIHNzZTQyPSIxIiBhdng9IjEiLz48b3MgcGxhdGZvcm09IndpbiIgdmVyc2lvbj0iMTAuMC4xOTA0MS4xMjg4IiBzcD0iIiBhcmNoPSJ4NjQiIHByb2R1Y3RfdHlwZT0iNDgiIGlzX3dpcD0iMCIgaXNfaW5fbG9ja2Rvd25fbW9kZT0iMCIvPjxvZW0gcHJvZHVjdF9tYW51ZmFjdHVyZXI9IiIgcHJvZHVjdF9uYW1lPSIiLz48ZXhwIGV0YWc9IiZxdW90O0UreGJBejZZNnNVMTI4OWJTNnFsNFZSTGJramZCVUdUTUpzanJIcjQ0aUk9JnF1b3Q7Ii8-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDQ5MjgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxNzQzMjM4OTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjkwMzU0OTMxIi8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\39dc917fb2285835b0ed52d5aa833be0cc3e3c903e5c6bc0f3c8ccbd9f406362.exe

    Filesize

    224KB

    MD5

    7194922012b205667f56de55ac7d0b2c

    SHA1

    a2f333775c42d9b8d0d1a31a1e7153a9089048cb

    SHA256

    5dedcf0db6a06ee2e067ef3776f8422e7ec1b4985250181386b8c4dc6c704d66

    SHA512

    e842b7075358e71998430c382a7c192cc4ee1e8a5c3815f1a46fe4d94b7a88f981692164437ffc4226856a7966a28d2f4c642587122773b0ef37ddeb178b9350

  • memory/1500-121-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1500-122-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1500-123-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1500-124-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1500-125-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1500-127-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB