Analysis

  • max time kernel
    79s
  • max time network
    83s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 13:16

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:2012
    • 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:1324
      • 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:912
        • 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:304
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1712
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:240
        • 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:1776
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1992
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2036
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1564
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1648
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1580

    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

      185.0MB

      MD5

      bf9bd28054bbeb5a25fb32b4972d7214

      SHA1

      3ca243291ab673c4016475df554a1c3e638c07bc

      SHA256

      2af78b75bf469ff6fa82bd08714dc962a71f68a02b71508ebb92ca85bee3be4b

      SHA512

      dce57f04d0a120c03ea467f066d23a03065355d1bbcebf3e26187a9d78e2a2b8fc752e875784dd0d88712992665060d29e63ae6d36ee7f0f39e7dc6654db1939

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

      181.8MB

      MD5

      6336dc43809b3a8d622c0b563fe57fc5

      SHA1

      e8795273f8a563ef2fb017cc13560f422afebbb3

      SHA256

      8cee8b2088127980dea5b74f1eac6faac1c73bffe069972a6b0629fc21349574

      SHA512

      8bcfb8f00f532c41dbad1a3622685eb76a4e105041d37a7ad80cd69d6d0bc2e366adde85d53b51cc266d7446e5ab6f536e5e8d509c39ddff7003356656b9310b

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

      7KB

      MD5

      32b447e1a2f7be76cf32e3cd91a61852

      SHA1

      e774d775f295a9cf80604250900f5b4347688555

      SHA256

      55877232c9e65977ec7a7e140df7e515b04481293771c25e9885eb8c2e656124

      SHA512

      0fd83bf9c70e170182044098a716dedc8f1cd14c9d2db4e6734290010d5ac01ac6ef83313ff1ba560cd34db8cf468d62a105d0f05e86f60ad9031adeb1768778

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

      174.2MB

      MD5

      922337c74955b8e68da4c472065311e1

      SHA1

      93c64db075dec27fd06babe5c26cfbaf7cc54f32

      SHA256

      ea08e133a62d1f5f360ae8c54f19c4b67b3079e0e0edc3b3c63287586123d805

      SHA512

      c3b26c34dc220f3e264d8cedd6ac197497f61ff6f9ee955587639c4fc63f01389bd6215373ff97f1aec71e03df8c8e065c465cd0d76fa7c43e1b99f1e0aed0b3

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

      178.2MB

      MD5

      3d7dde2cdf26f939dd1d3c0246bb915c

      SHA1

      87883de597fa999ecaa79b86717b49c0ddce79c2

      SHA256

      a7ccdce93cf240b6a9ae76a0712255a550fb800f93797aa0f2591e9f56f0c170

      SHA512

      c5f18a7260394bf9636f7255cdd42d155cd6d529a9b32e7344a09eea027d39f93ba7ad082d4d5973a459a879d03b6108c1853da272109e430f3c0863b5ef1a58

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

      102.4MB

      MD5

      1ec650b5440db7b987d3433d6bc66397

      SHA1

      a81addde74f31f44952c64738eaae05a47488cf0

      SHA256

      3b7cfef4e603f6ff27b323ae562e52daacb896b0b48edafb3cb854b545d7f28e

      SHA512

      828c9260c2292164aa44d0e95090e6c3a8fae8024f9f1edd6c0468517ebdf59afead911e4334ffa7ddc580a8593f343278f73eab3374a11b86804da404999d12

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

      174.7MB

      MD5

      9bf2388db1f305e519662cc3d4eba454

      SHA1

      b370d8aa93a58b9ada60d83a45d10d9d03bc3e8c

      SHA256

      8f712eed16df0ef74728157bfbae899ea32d2fea770679ccb2e2f39f81330184

      SHA512

      035e7453342b6adae19c99cc6a0b50fb9c8d1c0b7c37c82129fb58a69b96fa6a8f1b0742285031390645b22094645a328ffeef3c759b648451a2d77b5bb983a1

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

      175.6MB

      MD5

      6e1448446a800d8a68499b3e24106d8d

      SHA1

      f95426df9461c15d6900ce7f540eb5e6e55a9b27

      SHA256

      cad765949cbd8e49610a4f3e84d5656b3154d4ced789761afeae16418fea9bb4

      SHA512

      a82920a00707bf43f87c9b5d7e5a3711e1550c0ab1fb0dba169f4d220f2335e256ad9e0be9df9347a3de8bf80b5d872ceba89ccaeb2ad92056fc0287c7b74743

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

      172.9MB

      MD5

      028cb6d430cb1562a0dceaad81be77b1

      SHA1

      65e4f71537c2dcd2d7e4feecd900c740e66cfabb

      SHA256

      b1d3e246e85d2134da097e8f514a38fe31d75e849e206fcc7ebc948e295c9fe1

      SHA512

      60cb5dfd37e9b99322894dab9365b153fe686a20fe1f7a6784a3f0ce53037fbbcefb2ffe31a6c466236037146793298b074e4e1200af1f7dd864daec06b08597

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

      176.4MB

      MD5

      09b2a65d66e03e86b4fe8d39fcb58347

      SHA1

      eaf3e6fac73499d59624d703dccb1a19c9df3529

      SHA256

      94b33338fda5409802f85c9f5591358767bb83a56636b2b4c8134e0e4e88f8aa

      SHA512

      07befd09d066875505c357f458d7480537a8e1fda73f7aa2e4ee9eb86724466f60cb08c1496f90cbe8609e7a226b3f650a66e82d1fc8c5a3d928efea1130cc6e

    • memory/240-78-0x000000006F560000-0x000000006FB0B000-memory.dmp
      Filesize

      5.7MB

    • memory/240-94-0x000000006F560000-0x000000006FB0B000-memory.dmp
      Filesize

      5.7MB

    • memory/240-73-0x0000000000000000-mapping.dmp
    • memory/304-67-0x0000000000000000-mapping.dmp
    • memory/304-69-0x000000006F5B0000-0x000000006FB5B000-memory.dmp
      Filesize

      5.7MB

    • memory/304-70-0x000000006F5B0000-0x000000006FB5B000-memory.dmp
      Filesize

      5.7MB

    • memory/304-71-0x000000006F5B0000-0x000000006FB5B000-memory.dmp
      Filesize

      5.7MB

    • memory/912-66-0x00000000064B0000-0x0000000006850000-memory.dmp
      Filesize

      3.6MB

    • memory/912-74-0x00000000052C0000-0x0000000005432000-memory.dmp
      Filesize

      1.4MB

    • memory/912-65-0x00000000008A0000-0x0000000001014000-memory.dmp
      Filesize

      7.5MB

    • memory/912-62-0x0000000000000000-mapping.dmp
    • memory/1324-56-0x0000000075E81000-0x0000000075E83000-memory.dmp
      Filesize

      8KB

    • memory/1324-54-0x0000000000000000-mapping.dmp
    • memory/1564-98-0x0000000000000000-mapping.dmp
    • memory/1580-100-0x0000000000000000-mapping.dmp
    • memory/1648-99-0x0000000000000000-mapping.dmp
    • memory/1712-72-0x0000000000000000-mapping.dmp
    • memory/1776-89-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-95-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-81-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-90-0x0000000000464C20-mapping.dmp
    • memory/1776-83-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-93-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-77-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-88-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-101-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-79-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-86-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1776-85-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1992-96-0x0000000000000000-mapping.dmp
    • memory/2036-97-0x0000000000000000-mapping.dmp