Analysis

  • max time kernel
    60s
  • max time network
    64s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 07:32

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:1392
    • 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:1776
      • 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:1536
        • 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:1376
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:584
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:896
        • 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:1132
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:296
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1672
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2016
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:884
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1748

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      247.9MB

      MD5

      d658aedd1cf2f6a4f027184bf8ba6bb8

      SHA1

      2903fa7d00b959747fe06393a6a0ab6850c2d485

      SHA256

      b3edddbf5f29c1a50a14d7473e7e70f64c17a948b6c2175a2ea9c582f2dcd55e

      SHA512

      2373a71743b7c53f98453d28ac80aa38cc3189b5255ee7539a6c727fdf69cc86dbce184aaed7a5c7c12033cbd9738158ea8578ad12a71d276ed110fd7b76a1c3

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

      Filesize

      243.4MB

      MD5

      8b433b2784316c8e828b6c1b508ea16a

      SHA1

      4965888d91290f6fd976f45d09a3070e4dbb1dfa

      SHA256

      11082a2b37d1fc37fef606300ea46e8015e182047ecbc195dc5630e4e8be10ee

      SHA512

      fdd47a2f0bcc7837f0033e7128db67a200231e2f15e0911051f5664904694b0486fa1081ff04677c8c86f9e944e6a87b6bbf67c6a6fc3bf03c307edc17dd15a1

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

      Filesize

      7KB

      MD5

      b666cc59d3d2b818dc1073824effda94

      SHA1

      a5d0867838580780d9a6e3de09e91a79c7d55927

      SHA256

      2b6c23a9b383ea12cdba25694a3fdc71387199b5227ef651b4cf2bca1eb88fca

      SHA512

      eb51a5333ab058293083f08a9b820c1a4d9974fd1b52e5ebdb58169bcbbb5e50813654178a809387becbe56c14524eca6fdc11b7d7e68b5cae4ef75d2d38a7cf

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

      Filesize

      237.8MB

      MD5

      60aeaa15af666ba254621fd6ffe2e2fd

      SHA1

      f0df52b0cc301b532b36c821c7789bd132f81d1a

      SHA256

      3d72ae9135c875b2e8fa185896192b71508b5be86d050ee48b05d4a5f4fc9ef9

      SHA512

      56b99a27f5126abb8bbd70e3c61e40278c94d98c5aed6aa4ccb3d9746fddc670fa9c64b9a66329d6e0388c775574474234ec413b100d90b2ddf6748199bf81de

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

      Filesize

      233.8MB

      MD5

      610271bfe4e955dc33b2dc43c6e04939

      SHA1

      4fbd9beb70838bec86c6d7f25117392cea771540

      SHA256

      08765e6552805cd2a8b96eec9f930098eb4f246ef8f124ef0ee7f58939a0ecbd

      SHA512

      096b5b13fd49de433f9f7eac06fa15a57c70326c5519f9100066dee0ffbcc49c3b6c1e62b80ab76056b66937191030e4470f4bb901c66753a284b87768aea2d5

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

      Filesize

      172.4MB

      MD5

      54232219b263daa2588100ee6badafb0

      SHA1

      44f738a24e398c3971d776f8c500db0bbe4d74db

      SHA256

      df1ed2fe1fc1f74709a4ef2294daaeab0f1fd845298cfe2bc3160a2026cf38f5

      SHA512

      be529a1da6d6910d3e22d84bfc3926414c82df69496a466ec7e3b19e621f028c2dbcd319cc9d86cb1b0bfc5c618d27d953c4c1b3a09fc9aaf9de2b83d1e727f9

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

      Filesize

      239.2MB

      MD5

      47afbff5ab9079838427a5b58e3bc2ee

      SHA1

      1ec2c535c3f1f72e73c8b93dcc65153377f638cf

      SHA256

      b833cc29e6034ff134dd92586f8bfa83377f13d8d044085b1bde1e5b6373706f

      SHA512

      cb4c3d0bb815689ef0dc123879b0a2376dbccb42a62338d8d2dce321c4b3bd223274999bb6aa7b9285e237a2448fced7adb03644b9a8470c38f67a48b6b5ce3c

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

      Filesize

      238.6MB

      MD5

      ac2a2251473e485556a13db9ddd0fed4

      SHA1

      55f215a23f29aff15648e8a9589f9d37d14daa97

      SHA256

      bf5390ba1f02dc3d82e6e73bf40c1ae49779b7e535e5dbe78f5cfb22dc96f986

      SHA512

      27abd6d171eb8865babaa3884e3da9eae1d20c8efde2c06cb351e5a31cf7c3b2b6c7d5d6eea37ccb99f3c157abc72530152e050cb8fcc057e515858cddbdf860

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

      Filesize

      237.6MB

      MD5

      0e86ee20bddc39a11ac9add907f98c16

      SHA1

      d9c24805e7a5bd738c566790e0b4c20bde94fbd9

      SHA256

      fa0bbec3a7bef86b3ce647c528ec12bb7a0b32c0702a91335158fce2d7862898

      SHA512

      244a8392c3983d57d84280775e5c36fe8fdf7f2fed87fc74df25a9fe5bf8611e07c289bf9a4d6aef6cbf0cfff6740b1d09c22e3e890b9904fa832e80be2bc38b

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

      Filesize

      235.1MB

      MD5

      419aca0bf664a4d4fdc4489460faa54f

      SHA1

      494746b629a78b1a740a5f573f527a2e83664fa2

      SHA256

      e778c06eec315821c6d4482cd4a4c85d33b153ca91c4e53fedd281d57fce1cc5

      SHA512

      685c542ac2eb110af2b669416012e54e31ed34a5743550d8a5cd1850ddd36a22e9b2516b1d4f24fedb8b02ef7f5c227bd0374895fa155334b7cefed23efe0a2a

    • memory/296-95-0x0000000000000000-mapping.dmp

    • memory/584-72-0x0000000000000000-mapping.dmp

    • memory/884-98-0x0000000000000000-mapping.dmp

    • memory/896-85-0x000000006F5F0000-0x000000006FB9B000-memory.dmp

      Filesize

      5.7MB

    • memory/896-73-0x0000000000000000-mapping.dmp

    • memory/1132-90-0x0000000000464C20-mapping.dmp

    • memory/1132-89-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-100-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-94-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-93-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-77-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-84-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1132-86-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1376-71-0x000000006F640000-0x000000006FBEB000-memory.dmp

      Filesize

      5.7MB

    • memory/1376-67-0x0000000000000000-mapping.dmp

    • memory/1376-69-0x000000006F640000-0x000000006FBEB000-memory.dmp

      Filesize

      5.7MB

    • memory/1376-70-0x000000006F640000-0x000000006FBEB000-memory.dmp

      Filesize

      5.7MB

    • memory/1536-65-0x0000000000CB0000-0x0000000001424000-memory.dmp

      Filesize

      7.5MB

    • memory/1536-66-0x0000000006450000-0x00000000067F0000-memory.dmp

      Filesize

      3.6MB

    • memory/1536-76-0x0000000005470000-0x00000000055E2000-memory.dmp

      Filesize

      1.4MB

    • memory/1536-62-0x0000000000000000-mapping.dmp

    • memory/1672-96-0x0000000000000000-mapping.dmp

    • memory/1748-99-0x0000000000000000-mapping.dmp

    • memory/1776-54-0x0000000000000000-mapping.dmp

    • memory/1776-56-0x0000000075521000-0x0000000075523000-memory.dmp

      Filesize

      8KB

    • memory/2016-97-0x0000000000000000-mapping.dmp