Analysis

  • max time kernel
    125s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 01:26

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:1728
    • 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:948
      • 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:1424
        • 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:516
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:576
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1668
        • 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:1380
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:588
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1176
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1184
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:952
    • C:\Windows\SysWOW64\Wbem\WMIC.exe
      wmic path win32_VideoController get name
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:904

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      301.3MB

      MD5

      422fd89cbd19027dfe670d24c566cab5

      SHA1

      972670953fbcdb64011ba99b87f0786105adc7e7

      SHA256

      d78f7e9661dc3b0a005cfa29b6ebc49c479db618d33a62f7ab4f02b1cd145a2d

      SHA512

      d3d2caa43603c38ef91b3c35118580c560fd6160bf783461da19181def583da8c07676ba105023b20fcab463270d5423a1a7ad09d3434ef4910ad11d0706f5a4

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

      Filesize

      298.0MB

      MD5

      9af019d0645fe9ab2eb2dd318c1ab133

      SHA1

      217ba53ed9688e58616b239f833d1393e1852fea

      SHA256

      02ae0394a16ee334100214740eef6e1a6c9b1dbc74248afadcb03bf2870f3715

      SHA512

      b9758e1a343f5dff76c0a7c65fe4fbc89af87db4c8a639e7645e0bfaa403fa9e1228f335ba39617041d2137137e229b66d97efe49ded69de249ef79475fbe6ea

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

      Filesize

      7KB

      MD5

      c9251191c879356612153c479777d80b

      SHA1

      5a6b474ebd9bd7f14825f99cd44b9203d246db8f

      SHA256

      25396b08cb2775881948a3e669f35763701df308476b96a04a4fcabfb07f2e77

      SHA512

      bd2afcb07018a5d73615c66d86c7f9382826f22c209650f12fcaa107b03a210b90ef324a0eb752a1733fe749abf8e4bac975bec61015fb878570a571082fbfe2

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

      Filesize

      214.6MB

      MD5

      4a235f12e32cd742f4376af5ff8fa4c6

      SHA1

      409a87c679e78a5496f1d9bec6a516b0008b0ca2

      SHA256

      86de43a0da31e63645e3d8a36aa529069a900d69850df1020b898296db743f93

      SHA512

      00acb628fc132d54f6ee4b726634dab0223b76d2c73242b0807dbdbaf9de52c79baf04e048707845abf0623ac05fd7b8baa6d3f32ca2eff0e85e3e5a9a82a119

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

      Filesize

      214.8MB

      MD5

      c53d1df62d94a13c37d646dc8fb5adf3

      SHA1

      1145d5f441fb5e01451dca4581161f42961d991c

      SHA256

      8f3bfdf1e3ec47415b00f8617c67dce3a566aac17063ed7d9346191762847f41

      SHA512

      e8286856c415c89f71daaedcf2f85daf262411cf4239a31d80040fa74c4a7d35dfdce9fc19e8ed9fa3f8ceae29a60604f9fabaf93793d26e1433e2948f8b5380

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

      Filesize

      92.4MB

      MD5

      fbfeb8fd1870cc469758992304997905

      SHA1

      46f3de1065a1a2814776aefd717ace6d72d0cad6

      SHA256

      6f41c701ba2586694d86ad36d1fd3ec84b2bac34305ccc0c65ec855dd2d64f4e

      SHA512

      9986383bddcc1a62e2cdcf4c7dddc0dcb1da7144455affd444e60c667ba602c0b99910367242620537cff30551eddb306adb7f18d23dae2e099e9977cda6c4c0

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

      Filesize

      220.5MB

      MD5

      7df068c2019f36e5489adf7fd3c106da

      SHA1

      4a93a917ace89b4929a74cc39ae0c5d2deeae252

      SHA256

      07364d5d4c6c9fc3a52d815a50b6592be969ac44e435854a985f066f30aabf24

      SHA512

      2476130749af9d20dcf22daeadef2d65395a2e26eb41b9219d115b4fd2e508cea9cbffc3553e4d1511eadef07983b3ea9b2610958130ff5743b4e025f9eb787a

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

      Filesize

      209.9MB

      MD5

      f6150fe0afebfb19ffa2c88156eebfa5

      SHA1

      3b4dd114ca7559e86ba735a744eb4e3bf640aa67

      SHA256

      27c02eb6d485933f1b76bc2c6563fb701d9036e2063811c1de4ce2eaeed25df0

      SHA512

      13a3f2363d9f645d8eab4394249eb99ac18f4751cbcb102e6adc24a6b862cbb218daec9c207ab9a93e3eb466ba057fb1bd3a5fcd4abb9f8817ef0f4e33e7b996

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

      Filesize

      220.2MB

      MD5

      b33d24eb9449bf5df882aedad62d2f5d

      SHA1

      49b7699654a48c18bcccff96fdcd18d023cc0dc8

      SHA256

      5c29862b5da907ee177c925f9d6a6fcf008940566591692015ffef699455d253

      SHA512

      572cac80179e160af1938c1f8c777cc4da50f3cf5d645ec82920811fff51f6761ae9a32d1285db002722ee04174b2e90a6f4d5af269ad4be334b7073234de84a

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

      Filesize

      216.8MB

      MD5

      0648de61c9bac1bad8ca928b73d62789

      SHA1

      3d8c6768f56d7bfadfcea863981401bdb1290053

      SHA256

      f08abeecf7d599d7b12d449235688b94af254e9fd7459ed65a8ee910d5831560

      SHA512

      0b7c3a007c709ecdc47c141afe5a118d89b895f6c682f9f344acbe6e78b6724965af385cdc4cff418baa91052b14d743a4a9ff7f71bce65b299d3ed987498183

    • memory/516-70-0x000000006F330000-0x000000006F8DB000-memory.dmp

      Filesize

      5.7MB

    • memory/516-71-0x000000006F330000-0x000000006F8DB000-memory.dmp

      Filesize

      5.7MB

    • memory/516-67-0x0000000000000000-mapping.dmp

    • memory/516-69-0x000000006F330000-0x000000006F8DB000-memory.dmp

      Filesize

      5.7MB

    • memory/576-72-0x0000000000000000-mapping.dmp

    • memory/588-97-0x0000000000000000-mapping.dmp

    • memory/904-99-0x0000000000000000-mapping.dmp

    • memory/948-56-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

      Filesize

      8KB

    • memory/948-54-0x0000000000000000-mapping.dmp

    • memory/952-101-0x0000000000000000-mapping.dmp

    • memory/1176-98-0x0000000000000000-mapping.dmp

    • memory/1184-100-0x0000000000000000-mapping.dmp

    • memory/1380-96-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-89-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-102-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-85-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-86-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-90-0x0000000000464C20-mapping.dmp

    • memory/1380-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-93-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-77-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1380-95-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1424-65-0x0000000000EB0000-0x0000000001624000-memory.dmp

      Filesize

      7.5MB

    • memory/1424-62-0x0000000000000000-mapping.dmp

    • memory/1424-66-0x0000000006620000-0x00000000069C0000-memory.dmp

      Filesize

      3.6MB

    • memory/1424-74-0x0000000005490000-0x0000000005602000-memory.dmp

      Filesize

      1.4MB

    • memory/1668-73-0x0000000000000000-mapping.dmp

    • memory/1668-94-0x000000006F2F0000-0x000000006F89B000-memory.dmp

      Filesize

      5.7MB

    • memory/1668-83-0x000000006F2F0000-0x000000006F89B000-memory.dmp

      Filesize

      5.7MB