Analysis

  • max time kernel
    92s
  • max time network
    96s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 01:15

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:1908
    • 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:1952
      • 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:1228
        • 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:928
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:768
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1092
        • 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:1392
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1576
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:844
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1340
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1276
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:1304

    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

      357.0MB

      MD5

      9cd68e588d2a986b9a5f4f9b85feb8f6

      SHA1

      5436ee009bb710f40503f51b618b2e563a5eff54

      SHA256

      cee1cdfeb5a9d88c7bc596b0697c124aa160d68782b88e014db685e51fe9ca7b

      SHA512

      a3afa1c4ab76dcdd833c55ad879b8ad1f6981eb3be6e686389cfe99365da62d0e39326749f9208710ceb8cb500c8a715ceaf660e232350ddcb7d688425860f5e

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

      7KB

      MD5

      2c0ec0ea989227ba6c3efa6900828674

      SHA1

      b5865af94073b4bc542fd03bf5885c3772b4056b

      SHA256

      a42eac412bf95b9de765c45a6213a4e6c4998c4ddb562d0faaa1a54954d5642f

      SHA512

      fb918ac970f576d593ca085f83ab18d4281cd5acd05e01e41df39ec636176c064883315ed3139592b32a12baa3cb656dccd21757cfb4e7d8db028ae890ad21d7

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

      283.9MB

      MD5

      bde0acf0493fa578120bedab96114221

      SHA1

      cb691127a2910a87c2fc91bc8e1f3547118a97d8

      SHA256

      44a4109be20c33ffd78f1863bfe647f40d57011ba711171c01dcaf2d454135f9

      SHA512

      00b1f97773ddb459e703b9780a3fb17f34c344a92f86bbfdcc3ec94e7ede4c2aaade64f2ad4cdb5d049673e4a034148c2a619eda3c71ec156247f2b22919640f

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

      275.7MB

      MD5

      bfd61114b28659a3d5d7fc1ff251686e

      SHA1

      c430a76d650517edc03f81405307d55cb8bd2b6f

      SHA256

      851b61b1594e195fd3772264d5a5eca4739c1f09f1dc8607acb5de7cf95fbb4f

      SHA512

      69505bcce58395ddad2360c95f233f283a43d48f10e565c5fa3f74660c91f5787004e1134a67aafd0aa3c7df8039d11280079695560132a9ceb6eb4685d6977e

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

      139.7MB

      MD5

      25a195ff3b433e1ece921edf3a714bb7

      SHA1

      d7ee98d0421bb8040f4a19ff8cfbadb24125164c

      SHA256

      228cefaf651e82614e7a01380373215ec2e64e3281d88e5897b63a55f0408fae

      SHA512

      de08c3401908aaf9dc63943cceda7096d6780a340a8f59fbca366f9b86de8d182918f91d169bf36514b11753f0b34c01765551f9355f57cb0504ef42386ef328

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

      281.3MB

      MD5

      aebe8611a8870c7beb963e63a0520a01

      SHA1

      dfbf1fe809bf539a9964fb34838e90680f5e365b

      SHA256

      abd1cac2ee42c93d128edb85c3105f1591a7e2bea049ac50b5dfeb94a85479a8

      SHA512

      760aa1392143da6df1dd003032b36caa6427624735d7a8a91166b1f367ec2420077324ab6f1562ce51016cd77e7d64344d681add1790b41b4fa5857d24c52f65

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

      282.8MB

      MD5

      98cf3edac7b2c02b51f990a397e4e068

      SHA1

      857812686058de48cc70ccf9d9342b9009234271

      SHA256

      5afab7ae8bd647aa27e44851f7de8c5020be6b3b865efe4e407ebecf2af2a43f

      SHA512

      04d78c36c896caa7ce3ebb4aba01ef9ede7a1a044ee1a773a754a0ee3a9e0e82cb85e78bbc5bd7fa9be09343fb878b9bbc1eac1069b0da832ec205769daa383c

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

      280.2MB

      MD5

      1db16dfdcf8612e4bc02ec1a47328d17

      SHA1

      4dc4684d7bda4755d2045e325e4c974b71d3dbcd

      SHA256

      9783249313f3d2c7f8c75c201ae90587bbd0715b467badba7ca64640f3d6d284

      SHA512

      0ea45a542dc30adf1f686ef38a8a6b9f491c7c6ca5d9174157c3858190d2a07f26f1947cc7f7b2d5083ba6b63a71e50a9de58ad2a491924d1c6175481ad02ab7

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

      282.3MB

      MD5

      35424a7d0b5f80991216d17968788b62

      SHA1

      1c0472a879f34e2f52486336ade427433b750f55

      SHA256

      9912e92fa25a0524ee8ae454554c4e8aaddd0de3e2f824a4a7ced89675041a4b

      SHA512

      a597a162b0e8798a2c5d128ceba3c1593a0f0b57df7a8774e8cfb2d39347e9ae2ac3d32ed81aba9edb770ea48d983a7ab7f935bbe69355e63a9ce1034bff43b8

    • memory/768-72-0x0000000000000000-mapping.dmp
    • memory/844-97-0x0000000000000000-mapping.dmp
    • memory/928-70-0x0000000070210000-0x00000000707BB000-memory.dmp
      Filesize

      5.7MB

    • memory/928-67-0x0000000000000000-mapping.dmp
    • memory/928-69-0x0000000070210000-0x00000000707BB000-memory.dmp
      Filesize

      5.7MB

    • memory/928-71-0x0000000070210000-0x00000000707BB000-memory.dmp
      Filesize

      5.7MB

    • memory/1092-73-0x0000000000000000-mapping.dmp
    • memory/1092-95-0x000000006FF90000-0x000000007053B000-memory.dmp
      Filesize

      5.7MB

    • memory/1092-93-0x000000006FF90000-0x000000007053B000-memory.dmp
      Filesize

      5.7MB

    • memory/1228-66-0x0000000006460000-0x0000000006800000-memory.dmp
      Filesize

      3.6MB

    • memory/1228-74-0x00000000053E0000-0x0000000005552000-memory.dmp
      Filesize

      1.4MB

    • memory/1228-65-0x00000000011C0000-0x0000000001934000-memory.dmp
      Filesize

      7.5MB

    • memory/1228-62-0x0000000000000000-mapping.dmp
    • memory/1276-99-0x0000000000000000-mapping.dmp
    • memory/1304-100-0x0000000000000000-mapping.dmp
    • memory/1340-98-0x0000000000000000-mapping.dmp
    • memory/1392-77-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-94-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-88-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-85-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-89-0x0000000000464C20-mapping.dmp
    • memory/1392-92-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-84-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-87-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-82-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-101-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-79-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1392-76-0x0000000000400000-0x0000000000731000-memory.dmp
      Filesize

      3.2MB

    • memory/1576-96-0x0000000000000000-mapping.dmp
    • memory/1952-56-0x00000000762F1000-0x00000000762F3000-memory.dmp
      Filesize

      8KB

    • memory/1952-54-0x0000000000000000-mapping.dmp