Analysis

  • max time kernel
    113s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

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

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 4 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 56 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:980
    • 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:2028
      • 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 behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1756
        • 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:960
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1676
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1624
        • C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe
          C:\Users\Admin\AppData\Roaming\Voice\voiceadequovl.exe
          4⤵
          • Executes dropped EXE
          PID:1584
        • 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:1064
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1140
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:804
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1500
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1196

    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

      365.5MB

      MD5

      ba50f2bca86ba947a8d2035bb9b35123

      SHA1

      a542b5c5d41174dc2475a219978123b7d14f958f

      SHA256

      17790c5c071280462ed8e617fd2edfff5bf0f40fb9add57f866f058fdbf24cb5

      SHA512

      08fdb619e411247c571710bc47df2463c95dc2fee82025e548b65ff1a3e4a53e663fafec9bcc5cc234f32211b25f6f9472786c1be543eb71629f32ec09f04379

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

      365.5MB

      MD5

      ba50f2bca86ba947a8d2035bb9b35123

      SHA1

      a542b5c5d41174dc2475a219978123b7d14f958f

      SHA256

      17790c5c071280462ed8e617fd2edfff5bf0f40fb9add57f866f058fdbf24cb5

      SHA512

      08fdb619e411247c571710bc47df2463c95dc2fee82025e548b65ff1a3e4a53e663fafec9bcc5cc234f32211b25f6f9472786c1be543eb71629f32ec09f04379

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

      7KB

      MD5

      b210bfee6f71e2aaf096cc9f224b9244

      SHA1

      840d005ef8c0cb9da67532851f050d9efa3da49e

      SHA256

      ae34a9137be043aaa030b90bc2abe76185182535de28c6b1a7226588720f4b9b

      SHA512

      19982493c6f746fcf2f8694cf58d5393af80a039512f61f3af5bf4477a99c9029fcdc78953985332ebd9f6710f8bcaad3479ef1f0d2816671a9a6e0325914ae5

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

      247.7MB

      MD5

      8cbef15395b9663ce065896498383175

      SHA1

      35044875f5b00faa84da2566f606f1edf65b3547

      SHA256

      995dadf0df4ce9e96c8e29fe315c524dd8aedc869e863557890c7d2a8f13ea56

      SHA512

      e758dc0ed4765064ec9f979c4657ec8648d0b0fea8a9a747b95436db31b06ad829ebf698a173f179b593dadae692f42615011fff0c492267e0c7e8d1518b140a

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

      247.3MB

      MD5

      8beddb89eae5adac6dc53748ce12e8ec

      SHA1

      ed530da0d63e1203530eb4c9b95fe2e3687a9724

      SHA256

      1ce9ef1a24dc38703ccbc6aae0e148400ee577f6b089949a17cc6f03951fdfa7

      SHA512

      6648fb834cd12a398a600b1992d35e81464d0d2be08c2fb8731f573dc9a3a92beba1efb5e547f497467834ea7eda2f432d4370a60de70965daeb85e134ca56ef

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

      104.6MB

      MD5

      db286609e3f35b1d65303eb5f6e49d01

      SHA1

      1a2c3e6a16a91b8eda5f5060d142b59b165f4019

      SHA256

      dfc222f92bdaa27e4976ae1c3e7773df7f92975cc0d6f8694ebe4dbb01905be2

      SHA512

      de022660b0a9247318202f0be1efc1ae5e4ba7ecdcf14b94500618a12b590ce54703033051020fc0e3c59e19669f0711189c5652d3e2ae045bb3331c0341cd1d

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

      100.8MB

      MD5

      b29270e2a1490f08c3dc826817b0bbcb

      SHA1

      5dd8e10b30bcce43215910fac5b9c1c7824fc0b1

      SHA256

      dd71f4f9500b8c11e144708f8e0574f8d47dbe63a923679ac775339af23857df

      SHA512

      c0a24f0ed0c092ff147254872ebb07d9d2e79a3a8fab989c7f050bdd3f9fe3d6f9dac23f08123da35320243c384c6462240e216b0fa7da2112adb6f79f33ccfd

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

      247.9MB

      MD5

      7e417c72b25649a7b2ac996641b41ecb

      SHA1

      83e3727ce9e8a6af8314bd3567df4d348e5ae16b

      SHA256

      5ff35d82008b6a3d4c75d3ff02afb813e5acae62f76a7a69d62c9eae0286d7a3

      SHA512

      fc4682dd98bd87ce3cad6fe5208c884bdf5a241b9414d6d04a67d639768789e5feec24b6ec0c02a479feda28ff6b73c373280722195e049408e6d9f44df35a01

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

      244.1MB

      MD5

      c8e544a089e420ae378cfcaa8bc32418

      SHA1

      12eaeb10e5f5a1bcb4b6f5d8917bd25dd5643e57

      SHA256

      c91d9a95e1624b98490b61860c221bfdde92006b1eebfbb4d81856b9e55fac93

      SHA512

      487b6898c90f3b2b244c083dc49ff68132f9427444cac07ce2387086a4f1d6809ecacff4198b4bb963f7f8425104df9e8ca1d5ccc7afbee1bbb7f4e6e2ee9485

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

      249.8MB

      MD5

      5bdb70e451f9d3db605a805264091ae9

      SHA1

      be9e70bf3de597b190ab505b95a432d8ca2c2255

      SHA256

      08bc1a6f4a9013defd596f1c54599434d93c2c85055d909e0246b1f5901451d1

      SHA512

      c4ea1b785c2de2bf8c42c6bcb5af83b907c61c449cd34a06ac4b688ed57a449ef655e7188c9e570a2db721eeb22f2e8d111ea88e818bdc3e7d1cc7fde69b31c0

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

      247.1MB

      MD5

      9b3665633e4ed9857a344e63a17467f7

      SHA1

      3b3def4fc12347c55a61cf9ce75b13b76b9d7a57

      SHA256

      c1e6f56c8d5cd7b5a73da2411c82c66c0e3402e2d6e5394260c1d1d60c4bd27f

      SHA512

      07631248bda322406305fb5d314b83b4d6ec4e12bf7824513284bfb1175ae398ef166ac91d188551cdd6bbc6e9a7db450dcd3c5b3ca2149a16fadcfaecbd0cad

    • memory/804-98-0x0000000000000000-mapping.dmp
    • memory/960-71-0x000000006F750000-0x000000006FCFB000-memory.dmp
      Filesize

      5.7MB

    • memory/960-67-0x0000000000000000-mapping.dmp
    • memory/960-69-0x000000006F750000-0x000000006FCFB000-memory.dmp
      Filesize

      5.7MB

    • memory/960-70-0x000000006F750000-0x000000006FCFB000-memory.dmp
      Filesize

      5.7MB

    • memory/1064-81-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-96-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-102-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-94-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-90-0x0000000000464C20-mapping.dmp
    • memory/1064-77-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-79-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-89-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-88-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-83-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-85-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1064-86-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1140-97-0x0000000000000000-mapping.dmp
    • memory/1196-101-0x0000000000000000-mapping.dmp
    • memory/1500-99-0x0000000000000000-mapping.dmp
    • memory/1624-92-0x000000006F1A0000-0x000000006F74B000-memory.dmp
      Filesize

      5.7MB

    • memory/1624-74-0x0000000000000000-mapping.dmp
    • memory/1624-95-0x000000006F1A0000-0x000000006F74B000-memory.dmp
      Filesize

      5.7MB

    • memory/1676-72-0x0000000000000000-mapping.dmp
    • memory/1724-100-0x0000000000000000-mapping.dmp
    • memory/1756-65-0x0000000000D10000-0x0000000001484000-memory.dmp
      Filesize

      7.5MB

    • memory/1756-62-0x0000000000000000-mapping.dmp
    • memory/1756-66-0x0000000006480000-0x0000000006820000-memory.dmp
      Filesize

      3.6MB

    • memory/1756-73-0x00000000054A0000-0x0000000005612000-memory.dmp
      Filesize

      1.4MB

    • memory/2028-56-0x0000000075811000-0x0000000075813000-memory.dmp
      Filesize

      8KB

    • memory/2028-54-0x0000000000000000-mapping.dmp