Analysis

  • max time kernel
    149s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    10-08-2023 13:44

General

  • Target

    161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe

  • Size

    232KB

  • MD5

    2edd2a16ac037ec6ec19b7ec1de8d158

  • SHA1

    d9ba0bce953bf5f42962e61fd0eb17ac86d83643

  • SHA256

    161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63

  • SHA512

    a6eff00a9a7114aa230144e1de3d50ff19b7203e437bbabf61d86fb2758e0e7bc2a8d409cbf46dcafaf79ad993ffe6afaa6110433df5429be926b41ac9f5eb85

  • SSDEEP

    6144:HDubaBBOBIIj6HLLYLCYJqvc1DcCCB1ZHbu3Mi3//RBJpfq:SbaDCCdapp

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot5528293567:AAEvVqFZRYkeHFch3_kTGdMV2u4Swi0-pT8/sendMessage?chat_id=1787677484

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Async RAT payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 8 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe
    "C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:1592
        • C:\Windows\SysWOW64\netsh.exe
          netsh wlan show profile
          3⤵
            PID:1944
          • C:\Windows\SysWOW64\findstr.exe
            findstr All
            3⤵
              PID:2180
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3012
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              3⤵
                PID:1724
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show networks mode=bssid
                3⤵
                  PID:2268
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\161b63a97d89bf3531175f3de3ade5c1c4eab758530943f018906ea26310ed63.exe"
                2⤵
                • Creates scheduled task(s)
                PID:1172

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

              Filesize

              344B

              MD5

              414a5d52034a2264bec4b2250295e5b0

              SHA1

              43217ad78c0083c90b7378f22717d25a6039f21a

              SHA256

              813ed3d63d0757cce8a900e5eea1de3355ee25768ad7231796b6262e575c5136

              SHA512

              b0c58838c152969cf59198984b107a2cfc7ee1c27e0e8d2f2c8708ea581401de13db7285309e963417ba1148052f874f218784645cb759db7b510944961592a0

            • C:\Users\Admin\AppData\Local\251ac55771bd3dda497329dd24c109b4\msgid.dat

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\Temp\CabB63E.tmp

              Filesize

              62KB

              MD5

              3ac860860707baaf32469fa7cc7c0192

              SHA1

              c33c2acdaba0e6fa41fd2f00f186804722477639

              SHA256

              d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

              SHA512

              d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

            • C:\Users\Admin\AppData\Local\Temp\TarB798.tmp

              Filesize

              164KB

              MD5

              4ff65ad929cd9a367680e0e5b1c08166

              SHA1

              c0af0d4396bd1f15c45f39d3b849ba444233b3a2

              SHA256

              c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

              SHA512

              f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

            • memory/2032-53-0x0000000000B20000-0x0000000000B60000-memory.dmp

              Filesize

              256KB

            • memory/2032-54-0x0000000074C90000-0x000000007537E000-memory.dmp

              Filesize

              6.9MB

            • memory/2032-55-0x0000000004B70000-0x0000000004BB0000-memory.dmp

              Filesize

              256KB

            • memory/2032-122-0x0000000004B70000-0x0000000004BB0000-memory.dmp

              Filesize

              256KB

            • memory/2032-126-0x0000000074C90000-0x000000007537E000-memory.dmp

              Filesize

              6.9MB

            • memory/2032-127-0x0000000004B70000-0x0000000004BB0000-memory.dmp

              Filesize

              256KB

            • memory/2032-194-0x0000000004B70000-0x0000000004BB0000-memory.dmp

              Filesize

              256KB