Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    08-08-2022 11:12

General

  • Target

    c01f48fd972e6d2eb3e54806db58191384ae33dc31c3470b624e44734c6024cb.exe

  • Size

    412KB

  • MD5

    91154a4d0b7bacfd53525a66a932f3fe

  • SHA1

    9971101161b734ada1230f39879ef18406189ff2

  • SHA256

    c01f48fd972e6d2eb3e54806db58191384ae33dc31c3470b624e44734c6024cb

  • SHA512

    523980b7f8d43b482f2346f61a8698a9f1b85d6ebae46e43ab3d94a48ed893b67ae8fea37053f4c948617a2e618acfa096314f7efc5d90f4eb606c4799c6b697

Malware Config

Extracted

Family

cobaltstrike

Botnet

1

C2

http://service-4j8u5xfz-1313036808.sh.apigw.tencentcs.com:443/passApi/html/_blank.html

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    service-4j8u5xfz-1313036808.sh.apigw.tencentcs.com,/passApi/html/_blank.html

  • http_header1

    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

  • http_header2

    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

  • http_method1

    GET

  • http_method2

    POST

  • jitter

    4864

  • polling_time

    23000

  • port_number

    443

  • sc_process32

    %windir%\syswow64\gpupdate.exe

  • sc_process64

    %windir%\sysnative\gpupdate.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsEmxfKMYC5LiUpKEMysDw5RhiFkIv7c6+EWluHiIuCfVd7tNDkMPj+o8rkg7TnhFLVceHaB33aSx/h0YQXJ6QLAldtmRN6iAYB+cfGhE/9B2LEllnHXyBEUiNoki/qP1JVMO8ohGBGMcGOWPgmPfkDthg0ObBvGVfzzXST0PX1wIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    1.481970944e+09

  • unknown2

    AAAABAAAAAEAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /v2/api/

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36

  • watermark

    1

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c01f48fd972e6d2eb3e54806db58191384ae33dc31c3470b624e44734c6024cb.exe
    "C:\Users\Admin\AppData\Local\Temp\c01f48fd972e6d2eb3e54806db58191384ae33dc31c3470b624e44734c6024cb.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Windows\System32\calc.exe
      "C:\Windows\System32\calc.exe"
      2⤵
        PID:1916

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1916-55-0x000007FEFBD01000-0x000007FEFBD03000-memory.dmp
      Filesize

      8KB

    • memory/1916-56-0x000007FEFACC0000-0x000007FEFAD6C000-memory.dmp
      Filesize

      688KB