Analysis

  • max time kernel
    70s
  • max time network
    74s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 13:09

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:1720
    • 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:1708
      • 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:1796
        • 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:2028
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:436
        • 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:1696
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1264
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1232
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1568
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1564
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1756

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    2
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      242.6MB

      MD5

      7014f29273946079fe2b3a691578fd1b

      SHA1

      42c385a6643861e9ae1be2b6ae445c6a2791657e

      SHA256

      97c3f687a205d0932be413076dfea42affb61e5dafa3c45455a0b19002e66324

      SHA512

      8fc48b843e964d7c9c954a12a86e053ea2ddc87781e0b34793d4b37bfb8ae55fbc0781150bf8296854f093add6e9f7c4bc9b12436141e44013300b10eae394f1

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

      241.6MB

      MD5

      287ab4ca9355e7c3477fa155936db3cd

      SHA1

      06164d25327673a514bf66ea588e84f6c9579977

      SHA256

      c718c2e55b5004b49fed9db99659ab8226cc24c675569961f669bf7cb15bdc5c

      SHA512

      61475912a833f7731abed03edb841b7ad9bdbaad98def5eeb332720d1da1d44a79494f10a39968048ed16404becb2b78a107361f5599f0bf748ca934ebccbf49

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

      7KB

      MD5

      0d89b1c09afe4176815f7886edd080e2

      SHA1

      f4df610798a4c513230ad77a0e8de565a0da1b2d

      SHA256

      6c2e01612a3a22354b8eb6e6d50ce946d8811cde0730996cefc2b94ed7eea799

      SHA512

      e94d1b858e9ac43b5c9391df359a5347ab9d09c81f34e325e872bf09d6d8324a692524889c71a34524238c6bca94ff8f88bf8bc6c773c93cf03e07b076defcb0

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

      232.8MB

      MD5

      e15dc21c77c0fb8f0ecaa122628fd4b9

      SHA1

      dc138753fb8192e68e33e2ff35b5d4d9e11c5907

      SHA256

      185d8e8ce3be1727834111b3b23ba53deee6ad7ef041bdf461d550d40f44ccf3

      SHA512

      6d00543cfb3f9c1212e53a0bfbccbc6f75bf26b5670d1d3b4e6bcd6ac6a1797f8917bd7f0cc6a21b33c5cc1f38c0928f6687b484578028e33769bdd47f6b6e4f

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

      219.8MB

      MD5

      ff6b2103cef2ed205270f5642541440a

      SHA1

      a2962750fa0af4846c27ee310ca5596c9569686c

      SHA256

      60b16db81b3a5928204f6aa8bcb8518e06b2f22f385cf4c25ba89e7a8c42c922

      SHA512

      02f01cf99f987a1e5a64ace442fde9f4118b01804262403fbda1546ceb7bda35fd8825a5f7c0b62484b64ff2549baa39efcc5d8bd9b20811eeb213646ff9823a

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

      170.4MB

      MD5

      f3fa4803f495f9b6e44c94bce86ee2e3

      SHA1

      9660963681a21d2bf129e39b1199e0623d74e5b6

      SHA256

      7c0efb0e2d2f0538b878a2e29deac036f70f9d9764bac7e6bc47b00172936a01

      SHA512

      f94cd31681efae9fc070696c55c6425e7fbf5efcaad0124723ad835bfb5fac0a09d9eefd53595fc7a29a37ee36b6c01a87795aea73c3468419ee083cb841d4e8

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

      230.2MB

      MD5

      8e591699358113dcd597b534225591bc

      SHA1

      a1ca2b4e714d110c0e8cff7cb57be9e2ea5af0b1

      SHA256

      deb95d519d56627049fd80c30ffd5aa8255c2cc636fa5e2236907ef98be132c8

      SHA512

      e594578a87b3824c47185e297a2cbc183bd63fdb25c83227559e731d3152b0bf666e71aac51fa17455f0c430d551bfaf594d1598f8252a7f080c9d927b125e5f

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

      232.1MB

      MD5

      0a61eaac0b5a340d602866709ec67d3f

      SHA1

      fae8fda61fcedb0b9c95a502accef9c65373772b

      SHA256

      9211e26e4f17372b886d95c3d5e05415865b803ebdf262a3fa5139ba06cec2b5

      SHA512

      500e4d43625fa923fb6d9df510db0381b58ac23b5282c48676a5cee518bdfc40f1bfe31a94868886699bcdda6df667ad1329962c2f5fe3e224b147c729c02250

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

      211.2MB

      MD5

      b3687e6bff3a60d13c49765e31baebcb

      SHA1

      4f1b4a5b1940c20c55d766d8894bee675ec1e96a

      SHA256

      e57671e57d66b6a2a5efa573036379dc1f1dc4bb197fa7249b1ddf5697ff1d17

      SHA512

      fb5ffa73c7ad72a71734385ad19432045d6b9664ff2f1e0f174763c44c7ece82a8dbf9abb7d0835cfac9ba876b23386e5ef9f41a4a5d354299301341df8e46d1

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

      230.2MB

      MD5

      8e591699358113dcd597b534225591bc

      SHA1

      a1ca2b4e714d110c0e8cff7cb57be9e2ea5af0b1

      SHA256

      deb95d519d56627049fd80c30ffd5aa8255c2cc636fa5e2236907ef98be132c8

      SHA512

      e594578a87b3824c47185e297a2cbc183bd63fdb25c83227559e731d3152b0bf666e71aac51fa17455f0c430d551bfaf594d1598f8252a7f080c9d927b125e5f

    • memory/436-78-0x000000006FCD0000-0x000000007027B000-memory.dmp
      Filesize

      5.7MB

    • memory/436-73-0x0000000000000000-mapping.dmp
    • memory/1232-96-0x0000000000000000-mapping.dmp
    • memory/1264-95-0x0000000000000000-mapping.dmp
    • memory/1516-72-0x0000000000000000-mapping.dmp
    • memory/1564-98-0x0000000000000000-mapping.dmp
    • memory/1568-97-0x0000000000000000-mapping.dmp
    • memory/1696-90-0x0000000000464C20-mapping.dmp
    • memory/1696-88-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-100-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-94-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-79-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-93-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-77-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-81-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-83-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-86-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-85-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1696-89-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1708-54-0x0000000000000000-mapping.dmp
    • memory/1708-56-0x00000000762B1000-0x00000000762B3000-memory.dmp
      Filesize

      8KB

    • memory/1756-99-0x0000000000000000-mapping.dmp
    • memory/1796-76-0x0000000005370000-0x00000000054E2000-memory.dmp
      Filesize

      1.4MB

    • memory/1796-66-0x0000000006440000-0x00000000067E0000-memory.dmp
      Filesize

      3.6MB

    • memory/1796-65-0x0000000000C00000-0x0000000001374000-memory.dmp
      Filesize

      7.5MB

    • memory/1796-62-0x0000000000000000-mapping.dmp
    • memory/2028-67-0x0000000000000000-mapping.dmp
    • memory/2028-71-0x000000006FF90000-0x000000007053B000-memory.dmp
      Filesize

      5.7MB

    • memory/2028-69-0x000000006FF90000-0x000000007053B000-memory.dmp
      Filesize

      5.7MB

    • memory/2028-70-0x000000006FF90000-0x000000007053B000-memory.dmp
      Filesize

      5.7MB