Analysis

  • max time kernel
    136s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12-02-2022 02:54

General

  • Target

    191fc164d9dc6744570e08d2608480e79ad0ec790a1817bfcca1c917cc26e7ca.exe

  • Size

    58KB

  • MD5

    5cb1aa87712fa20d28e99f6b8c507a9e

  • SHA1

    e88a13b56937004e74e267af62e72281fe597e2e

  • SHA256

    191fc164d9dc6744570e08d2608480e79ad0ec790a1817bfcca1c917cc26e7ca

  • SHA512

    63e480b29f82984ba4b186b257c0fd9e5f31fe9ea54a3231821f6946f96477d5c894dd0e167db271f4f95247e9a32123b130417279cac5d060ce1fbc1abe3470

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\191fc164d9dc6744570e08d2608480e79ad0ec790a1817bfcca1c917cc26e7ca.exe
    "C:\Users\Admin\AppData\Local\Temp\191fc164d9dc6744570e08d2608480e79ad0ec790a1817bfcca1c917cc26e7ca.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4724
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1424
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\191fc164d9dc6744570e08d2608480e79ad0ec790a1817bfcca1c917cc26e7ca.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3672
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2708
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1256
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3120

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    854f0f7c4cc5ea8982ae244f7eeb1f0d

    SHA1

    adda1274e581817ea067fd8ce3d2b4a2e9ab9712

    SHA256

    495f450e1e8d793af7b13fb01936d296ef4ce667696dba7d56b5008c7f9e7ab4

    SHA512

    3078bab418f0e95593f141ea3d9613e24f2b0130032bf17aa5beb0143516599c04bfeee86820739df1c21839562e80613bdfee549430c99896a6eba24e6600f7

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe

    MD5

    854f0f7c4cc5ea8982ae244f7eeb1f0d

    SHA1

    adda1274e581817ea067fd8ce3d2b4a2e9ab9712

    SHA256

    495f450e1e8d793af7b13fb01936d296ef4ce667696dba7d56b5008c7f9e7ab4

    SHA512

    3078bab418f0e95593f141ea3d9613e24f2b0130032bf17aa5beb0143516599c04bfeee86820739df1c21839562e80613bdfee549430c99896a6eba24e6600f7

  • memory/1256-132-0x000001B904B30000-0x000001B904B40000-memory.dmp

    Filesize

    64KB

  • memory/1256-133-0x000001B904B90000-0x000001B904BA0000-memory.dmp

    Filesize

    64KB

  • memory/1256-134-0x000001B907870000-0x000001B907874000-memory.dmp

    Filesize

    16KB