Analysis

  • max time kernel
    143s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-03-2023 08:43

General

  • Target

    tmp.exe

  • Size

    6.2MB

  • MD5

    9b34a1a535c29e31915e4b8993d9bb5e

  • SHA1

    3801b45b01a1ddc836a10f9a4e28bb368bc958de

  • SHA256

    51b8e08571ddd7d98f4da91561999fce1b454ea42b3b83655f207df77f02ae1d

  • SHA512

    0701c9d84a14077fa5bb2a29abef21d1c67a36bedc6e4a9d0d50b6cb336d9c56ba0c0f823ecd6f31fd28847092bf3a2318f7dc3c1505ace26383523fb598dd09

  • SSDEEP

    196608:ANOniBSEhRELqS/ohbK9iRs5Vb9sybbsx0rnsEniAd96:ANOniBSEhRELqS/ohW9iRs5Vb9sybbs9

Malware Config

Extracted

Family

aurora

C2

94.142.138.112:8081

Signatures

  • Aurora

    Aurora is a crypto wallet stealer written in Golang.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4012
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:720
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
        3⤵
        • Executes dropped EXE
        PID:1956
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\meetrounov.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1936
        • C:\Windows\SysWOW64\Wbem\wmic.exe
          wmic os get Caption
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3460
        • C:\Windows\SysWOW64\cmd.exe
          cmd /C "wmic path win32_VideoController get name"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4040
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            wmic path win32_VideoController get name
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4128
        • C:\Windows\SysWOW64\cmd.exe
          cmd /C "wmic cpu get name"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2724
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            wmic cpu get name
            5⤵
              PID:4668

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      366.1MB

      MD5

      0f1c71b32b79c69580a2047de48151d5

      SHA1

      21f5a5060f0681de7d77ad8ef5cac16c61569c92

      SHA256

      e9729112633b5e23b2cb67e0050129cbcab51bfadb34646f033707ec75f7fd98

      SHA512

      a1143e50f1deea80db9b39b6fcd8e65b4a38ddc7e01af6fa6af313f24ddfc715e83f61eeae2e04f37c5ab4560f346f7d3c360b6646deb29ff6cce5e716a38104

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

      Filesize

      366.1MB

      MD5

      0f1c71b32b79c69580a2047de48151d5

      SHA1

      21f5a5060f0681de7d77ad8ef5cac16c61569c92

      SHA256

      e9729112633b5e23b2cb67e0050129cbcab51bfadb34646f033707ec75f7fd98

      SHA512

      a1143e50f1deea80db9b39b6fcd8e65b4a38ddc7e01af6fa6af313f24ddfc715e83f61eeae2e04f37c5ab4560f346f7d3c360b6646deb29ff6cce5e716a38104

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

      Filesize

      366.1MB

      MD5

      0f1c71b32b79c69580a2047de48151d5

      SHA1

      21f5a5060f0681de7d77ad8ef5cac16c61569c92

      SHA256

      e9729112633b5e23b2cb67e0050129cbcab51bfadb34646f033707ec75f7fd98

      SHA512

      a1143e50f1deea80db9b39b6fcd8e65b4a38ddc7e01af6fa6af313f24ddfc715e83f61eeae2e04f37c5ab4560f346f7d3c360b6646deb29ff6cce5e716a38104

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

      Filesize

      366.1MB

      MD5

      0f1c71b32b79c69580a2047de48151d5

      SHA1

      21f5a5060f0681de7d77ad8ef5cac16c61569c92

      SHA256

      e9729112633b5e23b2cb67e0050129cbcab51bfadb34646f033707ec75f7fd98

      SHA512

      a1143e50f1deea80db9b39b6fcd8e65b4a38ddc7e01af6fa6af313f24ddfc715e83f61eeae2e04f37c5ab4560f346f7d3c360b6646deb29ff6cce5e716a38104

    • C:\Users\Admin\AppData\Local\Temp\RzLNTXYeUCWKsXbGyRAOmBTvKSJfjzaL

      Filesize

      2KB

      MD5

      77e31b1123e94ce5720ceb729a425798

      SHA1

      2b65c95f27d8dca23864a3ed4f78490039ae27bf

      SHA256

      68cafb091d3642a1ad2440bdb51834086945ded836ea25c8f75de7e5fc568d85

      SHA512

      9c660381b859040e20745a1cf42646af3bd3780e2795a5ff3cedc61db9877b608d1fc431a1bd3ba3f25dd3643898b1c0f2abfc067c6634e4ce65de2d4c0c724a

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_25atkonu.khp.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\nJObCsNVlgTeMaPEZQleQYhYzRyWJjPj

      Filesize

      71KB

      MD5

      386c014d0948d4fc41afa98cfca9022e

      SHA1

      786cc52d9b962f55f92202c7d50c3707eb62607b

      SHA256

      448b329f3a10bbe3e8f86cd91509c2783b63d28a375231eb23724f5e141420f2

      SHA512

      13d46209c6b052977d6242763b54ac5e35b389e765c82ba773b520ebf5eacabdfdc22b642cb9760e39ad59dd82fa40a31a8d41fd6dd7ea9c9ad08c57b7d8150f

    • memory/720-151-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/720-150-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/720-144-0x00000000060A0000-0x0000000006106000-memory.dmp

      Filesize

      408KB

    • memory/720-143-0x0000000006030000-0x0000000006096000-memory.dmp

      Filesize

      408KB

    • memory/720-142-0x0000000005990000-0x0000000005FB8000-memory.dmp

      Filesize

      6.2MB

    • memory/720-156-0x0000000006800000-0x000000000681E000-memory.dmp

      Filesize

      120KB

    • memory/720-157-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/720-158-0x0000000007E30000-0x00000000084AA000-memory.dmp

      Filesize

      6.5MB

    • memory/720-159-0x0000000006CF0000-0x0000000006D0A000-memory.dmp

      Filesize

      104KB

    • memory/720-141-0x0000000005260000-0x0000000005296000-memory.dmp

      Filesize

      216KB

    • memory/720-161-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/720-162-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/720-163-0x0000000005350000-0x0000000005360000-memory.dmp

      Filesize

      64KB

    • memory/1936-173-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-179-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-232-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-172-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-168-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-174-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-175-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-176-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-177-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/1936-178-0x0000000000400000-0x0000000000731000-memory.dmp

      Filesize

      3.2MB

    • memory/4012-140-0x0000000005A00000-0x0000000005A10000-memory.dmp

      Filesize

      64KB

    • memory/4012-139-0x0000000003350000-0x0000000003372000-memory.dmp

      Filesize

      136KB

    • memory/4012-138-0x0000000000B00000-0x0000000000EC2000-memory.dmp

      Filesize

      3.8MB

    • memory/4012-160-0x0000000005A00000-0x0000000005A10000-memory.dmp

      Filesize

      64KB