Analysis

  • max time kernel
    184s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 02:39

General

  • Target

    c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe

  • Size

    1.2MB

  • MD5

    778ba1fa75c485d94d343facff0c9f95

  • SHA1

    a4284cccd85c4b707fb00f6607d89b2b0a288f40

  • SHA256

    c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3

  • SHA512

    b547ac4d2d5a874ff1d04dc4aa6046bc7107216cb6f135a85c3b0d9520aa06ab17415f1d7ed120c5627cdb8fc438fdd6fae113a50d5feca1d5af87ec31e5c745

  • SSDEEP

    12288:MlcZK8qBwbfrvUI+qj2poXJ8t/sGXAm903IYLH6voaJtz:9K8qwf7Utk2poXJ8tEGXAm94PLHAtJ9

Malware Config

Signatures

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe
    "C:\Users\Admin\AppData\Local\Temp\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe"
      2⤵
      • Executes dropped EXE
      PID:528
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 528 -s 544
        3⤵
        • Program crash
        PID:4824
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 408 -p 528 -ip 528
    1⤵
      PID:4800

    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

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe
      Filesize

      1.1MB

      MD5

      c326862e222ac7998e1f5491ca510e87

      SHA1

      8a636e13336fac3068b98bc5562a182bd5823b31

      SHA256

      2a5e1b3efcaf807b9fce94c655eb88f8f6d2c7ff3bd11c5e30ee821ff0c9b236

      SHA512

      5db82bbfabae527c74b062d7fbb4041b283ebbf2d7c26ac8e801992478e31b423bfd4358f31e0005200bff462b4922e6e306bad23a1dc84401960805b625829d

    • C:\Users\Admin\AppData\Local\Temp\3582-490\c1fdd300b01a24052da454295afed738f00d6aa28d2383bd9af4ff03736851c3.exe
      Filesize

      1.1MB

      MD5

      c326862e222ac7998e1f5491ca510e87

      SHA1

      8a636e13336fac3068b98bc5562a182bd5823b31

      SHA256

      2a5e1b3efcaf807b9fce94c655eb88f8f6d2c7ff3bd11c5e30ee821ff0c9b236

      SHA512

      5db82bbfabae527c74b062d7fbb4041b283ebbf2d7c26ac8e801992478e31b423bfd4358f31e0005200bff462b4922e6e306bad23a1dc84401960805b625829d

    • memory/528-132-0x0000000000000000-mapping.dmp