Analysis

  • max time kernel
    85s
  • max time network
    89s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 13:34

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:1236
    • 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:672
      • 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:1308
        • 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:1752
        • 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:1648
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1540
          • 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:364
  • C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic cpu get name
    1⤵
      PID:1284

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      137.3MB

      MD5

      e444d74e90a591074fc8edb957525c97

      SHA1

      88390d1a953d964a21e7adc24b58bc197c7ec7f3

      SHA256

      55c6b9f8e91402ee6554194ebdd87deddab55be55a03ff1d4794499fd3efb93d

      SHA512

      63f0db5de81f7a84c1722cb695b920c4a3bb62c488c39138b618ba9d5fb431bf78e0837044ee5b5b86cc06b7aa2e710b6d22c6df7d09f7ab7cf331d1d4d3b3f6

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

      Filesize

      137.8MB

      MD5

      13115942e0b047cc2e32a26ff8ab1319

      SHA1

      1af626f56b28329e467df12b6decc13a49705dab

      SHA256

      489a9148faca7f7772785c40e900fc3957073d18921cf1230b51d5cee6ce7e95

      SHA512

      63fc4524d76eb893523806b9361409bfc7b640ef2f7c478e0540b5d772a1599e754bcca81fb1bce4ee5944eb0988e00e7229e8c7b117f9a0847fcbff5505c952

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

      Filesize

      7KB

      MD5

      67c396fdb8639cc8ba1e1e756fb31c06

      SHA1

      71eadf6e0412e4f7d39e6b86ca58a44b78ef96a4

      SHA256

      052960f31448f93c368b7d8afe06b4a6c9d65e09117c50365315ecbb744deb83

      SHA512

      835bea56a1a65eed4b83176fca0538979df061cb8c4fdbc8501be2e18f28a3a0b6fee4d5fdb1fbaa85f7cfc190bf29bc0157f72b366c6ae53bf8a39813128080

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

      Filesize

      117.6MB

      MD5

      09eccf943a1bc7882adbf7f93530d210

      SHA1

      3d5e7029ab21389acea861abe9a619b77fb48972

      SHA256

      80e6c245d517c219a7212e1b52b106b721f2d68c6d773a4ba82e8b39d7d36826

      SHA512

      759d552aeb82eae50f6b691753e0f6456100b9149ff6ee3438911ca3c85d5b1a07f4db2a23724f695adff8f317eadf49c7128e52fbbe78dbf988b32c15923be5

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

      Filesize

      120.6MB

      MD5

      94dd6b60cd666dc1350b102380cc44fb

      SHA1

      66229a8965bcd37d186450c9180ef33792cc6953

      SHA256

      c0fed800e7490e98929d7882223ffe8eb1be6d1d37157623edcfc1d6f4676739

      SHA512

      3c970cd9f672b2749f65a20bb73d5d9c00b7ea6449911fc2b95a6d378bb3d05b30d8c6e255fd89afae5c832ea0d1dda392f6534c2a7b5c1e0cd666fb7e44b5ed

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

      Filesize

      66.2MB

      MD5

      e5bb75e1bf1e1ea607fa2eca9f71d44a

      SHA1

      3a4a14296042d215760826bf697e548ece01d256

      SHA256

      a0b8432c6d867721a5904e0f337c76c355249a0c37dd331c2ba6036050eb9c17

      SHA512

      6957921917c94fa9c0fc4677755b1c246f465e924b5a084ac60c8bc517e3c9b5610e1b07c2149ededf5121ec5f2003bac97c24a430c8eeb318bc893f86c558eb

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

      Filesize

      120.5MB

      MD5

      c6be758319bf76f71c15e856b77b792f

      SHA1

      73b8051d270e484762392b803bdc149a2590892a

      SHA256

      c7a4538659cdcabc3ccefe0505001c0337efca0abfd2ca623bfca5d5acb77739

      SHA512

      36c3f22a81a8083998252f7a48a21b876c0c20f356065255c0f8deb03fba7f7606a1d821d9b1e3d6587b85c2909fe74585ce9efa34093abdd1da85a8b152ff27

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

      Filesize

      117.6MB

      MD5

      6366d1f60f8658e3b5894eea61aa464e

      SHA1

      da2f2763ca2b975fcfdda63b5eeda4301d2b6e8b

      SHA256

      d1e66a8a722d2416534f69d8a655939bfbee206c6fb743f4423d15914b489893

      SHA512

      1595b472298664c2b1ccbcec3d90e5d1aef3cd4624a8c46003b93482b41fd5aa0bfe159a0153211a85c33a09d0da140167f0f04d6397122443a5c375b97e44f8

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

      Filesize

      119.9MB

      MD5

      c61e8b33fb94cfefd73b4ac0b8907cbd

      SHA1

      2f4ff9dc4d2fb47329a2a344d1f993f301216d0f

      SHA256

      48b5f11faf08100d18f8a601e4abba38e0e99b5db6af0bc0874639d0618ffc13

      SHA512

      457f35064efb99b3431012b8974c23b028ed02c257a3fe20442d5ff03d7f63ca4b2bfc7452f205f1dff1c5360330089f1535a679205137fd6e6b0c6cf6212f03

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

      Filesize

      119.6MB

      MD5

      65e77e7b6966bda0502eaec92b3fc880

      SHA1

      8b8029c483e9a021c307df8437448e5d7ba2ea78

      SHA256

      842b46eba4acc4653015f8c446ae11c325a3722712979be6e476c68faa9c5497

      SHA512

      6d3fdd446f3ffe63a2ca93966ffda716d2441d9a338cc6578a35b43276fd8e71642211950a683c59d0d3daa9366e1fc117b5d861bc06606f17dd13d1ffe0cd49

    • memory/364-99-0x0000000000000000-mapping.dmp

    • memory/672-56-0x0000000074F41000-0x0000000074F43000-memory.dmp

      Filesize

      8KB

    • memory/672-54-0x0000000000000000-mapping.dmp

    • memory/996-73-0x0000000000000000-mapping.dmp

    • memory/996-94-0x000000006F660000-0x000000006FC0B000-memory.dmp

      Filesize

      5.7MB

    • memory/996-93-0x000000006F660000-0x000000006FC0B000-memory.dmp

      Filesize

      5.7MB

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

    • memory/1284-100-0x0000000000000000-mapping.dmp

    • memory/1308-74-0x0000000005420000-0x0000000005592000-memory.dmp

      Filesize

      1.4MB

    • memory/1308-62-0x0000000000000000-mapping.dmp

    • memory/1308-65-0x0000000000CB0000-0x0000000001424000-memory.dmp

      Filesize

      7.5MB

    • memory/1308-66-0x0000000006310000-0x00000000066B0000-memory.dmp

      Filesize

      3.6MB

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

    • memory/1540-96-0x0000000000000000-mapping.dmp

    • memory/1648-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-87-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-85-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-89-0x0000000000464C20-mapping.dmp

    • memory/1648-101-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-92-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-84-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-95-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1648-77-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1752-70-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1752-71-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1752-69-0x000000006F6A0000-0x000000006FC4B000-memory.dmp

      Filesize

      5.7MB

    • memory/1752-67-0x0000000000000000-mapping.dmp

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