Analysis

  • max time kernel
    89s
  • max time network
    94s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 12:43

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.

  • 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:1268
    • 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:1556
      • 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:728
        • 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:940
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1856
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:996
        • 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:528
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:316
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1364
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1088
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:668
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1580

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      177.8MB

      MD5

      cff641ce3310c84b593cc41b29dfb8a1

      SHA1

      477899d15bb0d251ddfe1c54a23940bc28e5afce

      SHA256

      10838145a3e49ef837b8553dacf9cc608a9e45ef7e832f51e71495ed51a50cc3

      SHA512

      08a0514890577443cb5be5681ba28c8b6b4aa28784aae70b30f6fb1b0b2dade9c8a8731023cc5bdb0e08d8abbc19f8d3831ead710f705ad9049888413c0dc928

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

      Filesize

      177.2MB

      MD5

      95cd909b676fb78eef25b5db212681ea

      SHA1

      02ff8a8b4361362dc3c8fd856de3802f24d5476f

      SHA256

      280208513fa9c78b79cb518188007c5baec361e6dd21bd0467571b6fd3b9c63a

      SHA512

      c724cdb0f3d83a4c4c9cdb680ee6ce5aa97b301a3d9e935737be139b685b43568852de682b6c402f7cd184603772cacc3710963383fcc42a1cbd67aa27a04861

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

      Filesize

      7KB

      MD5

      c983b636c59ca10e2a08fd61bfa1e713

      SHA1

      27ca7e8cebc050e0fbcfcc00e910ce230f2e413f

      SHA256

      a48472f995edd451c2b652363effe21c6f59d8a24f2b6a58895ccf9527824acd

      SHA512

      49661b76d6d3bd1a23b925823fe503a5ca5ce0e9885d9ff534607d487dbcc80ef976df037f8469505a0f413bcd087761cd344371b466837572d2210c07a71fdd

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

      Filesize

      114.9MB

      MD5

      20779cfc2c8bfadb58d716bc5d049435

      SHA1

      a2e98381a3fce1287402eba717c88c35df9cb6fb

      SHA256

      72a1aa57a4e58a8266b9d2844545b3765b77dbae980bd30e98ebd45e41149f3a

      SHA512

      62390541a7b0a8f63d6dd214f48dfbf1a1244ad193a0d7471a3aae73f05325980af060c8883229c58f9d61a68a370ca1ed61a0f1e103d7c580527e80d3046aa8

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

      Filesize

      110.6MB

      MD5

      5cf04cbd3b7661ac85d4ff384bb896dd

      SHA1

      16b5dbef78cc15a5664e72fbef06b16b07017b05

      SHA256

      00badba5dc9504c64a428a256efc07230e1cd9b186d2b4e6d7f9e05aefea6489

      SHA512

      d41c01af006e6929cb86940fbe4a5d0ebff3ff127a3c220da432e5a3216d139dcaf941b7f381d814d0979635af1279f034ddc55b1c43ec1d421e767233bd5128

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

      Filesize

      40.0MB

      MD5

      a84f8bb9823588c5dcd9a9cd4f32005b

      SHA1

      2d2f15522a9cd7761463daf33e8aad2ce1c87579

      SHA256

      9deaa7753f58b5fe0dfaebd84d2e4bd9c3c33fc2af41bb89ab53aceb7c44ef60

      SHA512

      bc1c6a3fa0c7658ea10aaee7ddfea8d4958a856cd2f83084e136262723e7b603d80372154bbcbf8c04d7849b85b328d6c8430001dea0021a6ac3fd5dc937da98

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

      Filesize

      116.2MB

      MD5

      5d66e10518ec6b89e323200601faee32

      SHA1

      5022ba5b656d4a26f2ae8b9922156da63696d005

      SHA256

      c3b244b4bb74ce8d2439ab47299c6ca2700b56444c1d6c1001822d61d3d2fa24

      SHA512

      4443170460e29e40f2add83d2753c49f33af9eb3723cda0d7a6dc06773579df05872278c38738130758d97320fa3163152cbc7bc374290ea7a6ae7f04fad3400

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

      Filesize

      101.9MB

      MD5

      22526777cfcba83f747d10736a10e616

      SHA1

      2f3ab87ee16d868df2a66c6949db6deacf533411

      SHA256

      1165118afa66981b41b45cd37d40e0a7c8c46a1fa9fe3a35da923c4e2cc91296

      SHA512

      933df063e81ee2fcd69dfd0a165e31573bd5012d86735458bd29eb07684def060386e4a0455bf97e85142966432e69f2a11985e88cf42b73f868dbe1a79c3054

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

      Filesize

      114.1MB

      MD5

      7f742dba22ef95a840e341aa19b8f876

      SHA1

      66b5c391724151b54e87cb17083a83bf72292dd5

      SHA256

      4129b62685335d4ec269d3a17939e3be757548de15e3b407191332e82e2bc645

      SHA512

      35c3418801daccfba3a00189a0b3d68ea840cc3ce69a8be3491a32aacf626f171521f24315ae4dc8420726a1d03e620bcad2fb11a6dbdd00a08b4bcf1e930a48

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

      Filesize

      110.1MB

      MD5

      c0fd1e9a62f1003c31f153c5bedcdcf4

      SHA1

      e98b21b845dc5ca7321111543c94d87fffa6d173

      SHA256

      199dfa9f7889b8352d62877c7d5c3c9517ad58ccdf92bf02b5553a658b83ebf4

      SHA512

      0bf48105431b2845050ef64279b5fbad8daddfc855a068db8fa3327d59c8606ac06552c5759c1265f331262d79bbe002260aac4e4aa46926b4baf41ded4fdde2

    • memory/316-96-0x0000000000000000-mapping.dmp

    • memory/528-89-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-84-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-85-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-101-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-94-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-93-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-90-0x0000000000464C20-mapping.dmp

    • memory/528-77-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/528-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/668-99-0x0000000000000000-mapping.dmp

    • memory/728-62-0x0000000000000000-mapping.dmp

    • memory/728-66-0x0000000006450000-0x00000000067F0000-memory.dmp

      Filesize

      3.6MB

    • memory/728-73-0x00000000053B0000-0x0000000005522000-memory.dmp

      Filesize

      1.4MB

    • memory/728-65-0x00000000011F0000-0x0000000001964000-memory.dmp

      Filesize

      7.5MB

    • memory/940-69-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/940-71-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/940-70-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/940-67-0x0000000000000000-mapping.dmp

    • memory/996-87-0x000000006F660000-0x000000006FC0B000-memory.dmp

      Filesize

      5.7MB

    • memory/996-74-0x0000000000000000-mapping.dmp

    • memory/996-95-0x000000006F660000-0x000000006FC0B000-memory.dmp

      Filesize

      5.7MB

    • memory/1088-98-0x0000000000000000-mapping.dmp

    • memory/1364-97-0x0000000000000000-mapping.dmp

    • memory/1556-54-0x0000000000000000-mapping.dmp

    • memory/1556-56-0x0000000074F41000-0x0000000074F43000-memory.dmp

      Filesize

      8KB

    • memory/1580-100-0x0000000000000000-mapping.dmp

    • memory/1856-72-0x0000000000000000-mapping.dmp