Analysis

  • max time kernel
    78s
  • max time network
    82s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 12:57

General

  • Target

    5e243f79ecb539d0d1f75fce7ddfedeccee70a48.exe

  • Size

    3.6MB

  • MD5

    36fd273ea7607d3a203f257f4e2649ed

  • SHA1

    5e243f79ecb539d0d1f75fce7ddfedeccee70a48

  • SHA256

    471d501162e2a5cb6aab3f4f5362ff843d05ef9f20d9fd7ea29733d3a9875747

  • SHA512

    cf81163bc6d1f1141130fbe70944387b97d322afe837ad21a88a0be8f9fd87615bd7022cc572b1783871cc99f224258bae75855e805c733793b723ba0483597d

  • SSDEEP

    98304:VQF9SqUKUehGS26Ish7MUTjA+1VFnqWXvqaY4:VSSzMGS26x1MUTM+/Fh

Malware Config

Extracted

Family

aurora

C2

45.9.74.11:8081

Signatures

  • Aurora

    Aurora is a crypto wallet stealer written in Golang.

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5e243f79ecb539d0d1f75fce7ddfedeccee70a48.exe
    "C:\Users\Admin\AppData\Local\Temp\5e243f79ecb539d0d1f75fce7ddfedeccee70a48.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\voiceadequovl.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\voiceadequovl.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe
        "C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1448
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1616
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1872
        • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe
          C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1680
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1948
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:556
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1592
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1472
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:936

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\voiceadequovl.exe

      Filesize

      337.4MB

      MD5

      d634c04890231015fa4580e6fd06c1ae

      SHA1

      a8034ca18cf04c65260ec80c3564c7cd11122f61

      SHA256

      632e8bf922c56d37a24b870ba4dc70441b8527d549c05e242194e23049fa5187

      SHA512

      42ad1015966422c92fe7631e5ff27c34f316f4e40725e986aeeca02f6900d80c2be257c4c7b4fb4f1a0b086e6bf67f0f7b2979b81f442f7d2088e02375e10e62

    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\voiceadequovl.exe

      Filesize

      335.1MB

      MD5

      696c33efe4caa5c575f18da22d57d54a

      SHA1

      264a15d7b5f6056d49992fa4dec8602838e21535

      SHA256

      61fad9e942b342e0d5650acce16106e29013b12608a7f7a548bff67785c148a0

      SHA512

      a2217bd04d89a89021c417fb5c0945c3a604a8d21e9a2bd71c4c55acf7ba0255f62e7aecefc93675ac59613adaa06d58b7458f221b2752322ecb0ee6b8afee1b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      3576b20588c82227f1153297c78df61f

      SHA1

      041121af964e68404c48bb2554565a707a8a6c07

      SHA256

      fbb94b9ca4b0a1582c88b4ab1f974f5e57620ddd07fbff5d10f3b72008548844

      SHA512

      3b883f979bd7c9dd9d99fb9e97271d5254cd6bfaa7c3366efb147c189f9e23a5c90fbf799f5cdf55defb514c6a4b139700650481367ddf683344e111fd819bdd

    • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      318.8MB

      MD5

      0a4eb2e21f37a44b10e79bc85690fab0

      SHA1

      eba3fc479f3f3636ba95985a39774747975f65d3

      SHA256

      86191112ceab75c3b3af081f6a3adb89835b6c14656414343d3d74e07cbadcf8

      SHA512

      2796991af00790bdc4de4df094f4c5771eed8b22067f6b52cbf4fb7c20b7e840874475b12d4448e571f98185022118845d959a68d8695d0684043d82195b7317

    • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      316.4MB

      MD5

      3d712133daa41e0cda5b4258fc9174bc

      SHA1

      722606f60e6e6c8b1ee00e8dfe0e05d695bcf2ad

      SHA256

      6df87b0ff4f2a63aed41192b3ef1da85827128831f766de1e6b5b294cbed6ec6

      SHA512

      e6cf958454c355561505381ea73dec35c772d497ef98b2dec464e5ccd6d7040e7bcfe3ef143203680a4653795a65f01b5a7ed3fbc0fbe0a07dbee386c34405b0

    • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      197.6MB

      MD5

      2b05e7dc6240d5c5c412db34f7e6209e

      SHA1

      88db2dfc0a79fcab929fb30af472b742a791f80f

      SHA256

      a1396851c9cd61d1e0c11ba019d6891ab973cc76a2e4607dde2058bddb899a7a

      SHA512

      f7e58c2fb5a7a9070404e63b6eb130c8793e0cab5c17f222698a7bd9cffadb4a6e5f5b05007e03e30ddcd574a39f04843dc4bddfd90cc511e2ca244351709212

    • \Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      313.8MB

      MD5

      7423646cb5b6f49133a9a481175ed2a0

      SHA1

      7ff77566dd8cf68f3a6618c0c976bd982d5000d6

      SHA256

      d4f0741b1e97b3d4d660c3912a3c31cc80aa0695b19ab9380dab447f4bdfe422

      SHA512

      aff8dd67043ff88be74e21717b3ef36caddbadc29e35c8dd60caeb1b51ba192f74a119ab86e10a79fbd1dbde7e53f6854c6f4cc4358e060ad4db2ea635c247e0

    • \Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      317.7MB

      MD5

      be790a5d8fae3c6d09ae2c6c530ecb8a

      SHA1

      75bdb41aaf652522e8389cb6cae0da19b6f2a064

      SHA256

      a6b1f8cdc093009ee3af44e8c1ec0c230b6c1a966adfedae5f2e31522a8ef4ba

      SHA512

      b350471db87d4a75a0140acec91bf515d6f074186e4e8fe1bbc2b99c6e5d015c7d3b0ac796201591ec822cd5b749eed004e038c6ab8f0bca25fef9f802738916

    • \Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      319.2MB

      MD5

      0ebcad5be3b5b0bd95843b92ddf6f6f9

      SHA1

      a49b4e5a08e9a1f589cffac7d66b219e299be92f

      SHA256

      d6f1effb151dadae8dd4a64150a9220dd556f525f2776115865f1562f4f07a98

      SHA512

      a69fab16ad1b177e28e5985dd61465aaffef16e88ccd0ae85d25c3cbcd6a059d9cba0584994eff7a595cb02423736d26e8291ba5977648be00cca8884d067cc9

    • \Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe

      Filesize

      318.0MB

      MD5

      1be15e35cb27720389bd9a2e61afc286

      SHA1

      ad4db3bbc258335f17d7a8fb41db3a5b00fbe4f7

      SHA256

      734db991cbc26bba669b0d31e0e72375eff0ade875081799e9da9bd4470c74e1

      SHA512

      e5c2fc1c6ae4303ff04375b959ee487bdad123c813e8e359ed8ec895066c0463cee094a88bc5a00576f7eac28ee278c6016202ab93f79576a88d12031655d443

    • memory/556-97-0x0000000000000000-mapping.dmp

    • memory/560-62-0x0000000000000000-mapping.dmp

    • memory/560-65-0x00000000013E0000-0x0000000001B54000-memory.dmp

      Filesize

      7.5MB

    • memory/560-66-0x0000000006550000-0x00000000068F0000-memory.dmp

      Filesize

      3.6MB

    • memory/560-73-0x00000000053A0000-0x0000000005512000-memory.dmp

      Filesize

      1.4MB

    • memory/936-100-0x0000000000000000-mapping.dmp

    • memory/1448-71-0x000000006F7A0000-0x000000006FD4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1448-70-0x000000006F7A0000-0x000000006FD4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1448-69-0x000000006F7A0000-0x000000006FD4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1448-67-0x0000000000000000-mapping.dmp

    • memory/1472-99-0x0000000000000000-mapping.dmp

    • memory/1592-98-0x0000000000000000-mapping.dmp

    • memory/1616-72-0x0000000000000000-mapping.dmp

    • memory/1680-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-93-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-84-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-85-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-87-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-101-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-90-0x0000000000464C20-mapping.dmp

    • memory/1680-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-94-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1680-76-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1692-54-0x0000000000000000-mapping.dmp

    • memory/1692-56-0x0000000075A81000-0x0000000075A83000-memory.dmp

      Filesize

      8KB

    • memory/1872-95-0x000000006F4F0000-0x000000006FA9B000-memory.dmp

      Filesize

      5.7MB

    • memory/1872-74-0x0000000000000000-mapping.dmp

    • memory/1872-89-0x000000006F4F0000-0x000000006FA9B000-memory.dmp

      Filesize

      5.7MB

    • memory/1948-96-0x0000000000000000-mapping.dmp