Analysis

  • max time kernel
    79s
  • max time network
    86s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 13:30

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:1304
    • 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:1080
      • 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:472
        • 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:1768
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:928
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1812
        • 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:948
          • C:\Windows\SysWOW64\Wbem\wmic.exe
            wmic os get Caption
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1092
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic path win32_VideoController get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1276
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1936
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C "wmic cpu get name"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1716
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic cpu get name
              6⤵
                PID:940

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      184.2MB

      MD5

      1cfa8774c5287502f5023be6d506a88b

      SHA1

      9f089946a56d540f3b0c845e628a320fa6b4f6fa

      SHA256

      b288b1b59a0ac2e125439c7ec11b9b284673ff7a7781e860fa673ebc7419dfaa

      SHA512

      359ba138fcef707bb81bc95416349a32bba3ae771f85de7dbc85bb0fcfc51ddd356804f663873e0f5f6d4ae70cd4c000e41f1d3e4a6613f9816993d3b6bbcfe8

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

      Filesize

      169.4MB

      MD5

      8de895732b7bfdd81af86cdc1e0f91a6

      SHA1

      1af9df74d64d1abfd1d64db1c63c9f354a2e1a79

      SHA256

      261467011ddde53aa7e16b7785426c26bfd6402078b36cdd6bde7b79845576b7

      SHA512

      af6fdcc1544fa3b71fb5afa201cec490124be8e87bfacf7bfc6cedb127685b4a2aa2153f44358416a6e51fbca6cef65000424a281d416987f167301041e1350e

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

      Filesize

      7KB

      MD5

      20459ae558907e0472b25a4af2e7657e

      SHA1

      370ffaf39a947aaf4795f69e42f8ea3918bbbdca

      SHA256

      85547f33abc06ef9c03d56d59a2c9e57cc800efe89f5bdf17e7b237311594348

      SHA512

      ef0e515dcfe4808cad55f8e67ccbdf2203bc00fe8dcdb5b0c5f9df8ecb102748f95c69805283c40aa6b6b8ed54fb7ef2e8be4514e798484b769b5f39ed113bc5

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

      Filesize

      189.3MB

      MD5

      141a84174a7e0223ab31af62c98d268d

      SHA1

      cb1ca0af102524d10d47c7e5b6fcab43626f9ead

      SHA256

      39b6d661c2929d9229603317fda273ab168477872869de71cb4b1e1c0129bb9a

      SHA512

      ff0e1adb226218d88dc59f9bd93f753afd161371c4239c3d59b6a616c89d4078c5cfb76eb78405cb875148866468e7b9c70ae295dc69aa90325a8e538c374403

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

      Filesize

      188.8MB

      MD5

      0c63819fd29de5e6a3e1dfad4605d39b

      SHA1

      c4489d052064c51584b13bf71e3f8563a7c46121

      SHA256

      3aed6e962fdab044c2091128b71976654287342e4c28a78771d91d4cef98bc82

      SHA512

      fc783afa8120a28dd29a88ebac15883f3c40f081743e47484c036123cfda577b3a0ec7de038f12f53d38e65e9085ad675906d5b7e395e65eedb256f25d7a546f

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

      Filesize

      126.8MB

      MD5

      59434b6993f2e954b0fa21918c2fa97a

      SHA1

      3d9f93c73cd596ccffd8f86f35b79371dd01097d

      SHA256

      d487ae69a31acba42a392a435c72f52e8c2e76394255fd11cecb7bbccab35016

      SHA512

      43ab3261b11e6e7ed87ab092a27987ba1e48cbc72b4bdca80fb9c3ad7c7bf14d0b0b0b143a49682b4d745a7a174c569326dcf4f901fb5bc43489e327f34f039a

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

      Filesize

      187.7MB

      MD5

      7dd2a079ee0894010d36c77dc16e10c7

      SHA1

      cbe7eadd5a863d6c6afbfbd8965f4230babfbcd6

      SHA256

      c6ce4793b4ab819bf00bdabcafdcdddb14ce7188130f5a920e973d75198626d0

      SHA512

      e86b899e2baf975fa71b4893f7f269e1a5111396ce5843db2c38bbb977148f15b25f31f518d845eb7a90d349c8565fb1ffa9e778e96d6583fab3e7f88b0dae8c

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

      Filesize

      188.0MB

      MD5

      a22e45f052004f0d0b8c3340406d51ab

      SHA1

      3736fd9d1d591c07e7aade488eed9acc2236b79e

      SHA256

      97ff7ebf0ec3be2eb365b971a8f53f8fef59e86c435b3d1d37d8ae23086657ff

      SHA512

      db46dcee0e86a30dfa18d372342a282bf4bf7d820fcff4966d8f687c54e004d7f218729304cfe49116d9e1e32b00bb6d0374d5a407b5ed912b65c1d57ba999b0

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

      Filesize

      186.9MB

      MD5

      657db771ba85fd54b31cf7a48ab12c1f

      SHA1

      912f06cbec7fa11d789ce73a3a0bc46269c2b729

      SHA256

      a70a957ff5a06b6be511af0358c0f49ca66d5bc5fb1eff317b89d100d8863d81

      SHA512

      a2b04a3d347af2fa789c02b15a0fcfd893b70c01383dd66935c2c9209825b4ec661767c7d1257acec9391f093f9e8ea0eee5ff784cf7bcd67a7147e9f9ccf855

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

      Filesize

      185.0MB

      MD5

      5008034af86783a85cc80700876f19c7

      SHA1

      c7a492eb7be9ddd8342f249712982f8aa3b1853d

      SHA256

      b7b076b88b5ea8b53a7776ab851d2e3954fc2dcb5fc7dbd165037d6711e76ec5

      SHA512

      2e306cdf0725449f5144b4422528cb3e1546a7e09a7c5245ce3d8225ff8de65616e60a52f348e42a4fc399bb1c2f75ea72a46c57c84f023a4a2146312a6b7ff0

    • memory/472-62-0x0000000000000000-mapping.dmp

    • memory/472-65-0x0000000000820000-0x0000000000F94000-memory.dmp

      Filesize

      7.5MB

    • memory/472-66-0x0000000006590000-0x0000000006930000-memory.dmp

      Filesize

      3.6MB

    • memory/472-73-0x00000000054E0000-0x0000000005652000-memory.dmp

      Filesize

      1.4MB

    • memory/928-72-0x0000000000000000-mapping.dmp

    • memory/940-100-0x0000000000000000-mapping.dmp

    • memory/948-76-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-89-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-102-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-101-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-94-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-78-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-93-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-80-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-82-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-84-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-85-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/948-90-0x0000000000464C20-mapping.dmp

    • memory/948-88-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1080-54-0x0000000000000000-mapping.dmp

    • memory/1080-56-0x00000000762E1000-0x00000000762E3000-memory.dmp

      Filesize

      8KB

    • memory/1092-96-0x0000000000000000-mapping.dmp

    • memory/1276-97-0x0000000000000000-mapping.dmp

    • memory/1716-99-0x0000000000000000-mapping.dmp

    • memory/1768-69-0x0000000070040000-0x00000000705EB000-memory.dmp

      Filesize

      5.7MB

    • memory/1768-67-0x0000000000000000-mapping.dmp

    • memory/1768-71-0x0000000070040000-0x00000000705EB000-memory.dmp

      Filesize

      5.7MB

    • memory/1768-70-0x0000000070040000-0x00000000705EB000-memory.dmp

      Filesize

      5.7MB

    • memory/1812-95-0x000000006FDA0000-0x000000007034B000-memory.dmp

      Filesize

      5.7MB

    • memory/1812-87-0x000000006FDA0000-0x000000007034B000-memory.dmp

      Filesize

      5.7MB

    • memory/1812-74-0x0000000000000000-mapping.dmp

    • memory/1936-98-0x0000000000000000-mapping.dmp