Analysis

  • max time kernel
    284s
  • max time network
    302s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-01-2023 16:54

General

  • Target

    BitcoinFakeTransaction/BitcoinFakeTransaction.exe

  • Size

    997KB

  • MD5

    4fe10e794eb25820b63890cfa0abca42

  • SHA1

    321ecd39644a864a47cc3d431be53c8035acf59f

  • SHA256

    5cc80ef8d5cd9c1fffb5660dd739177ae9043cc13a022a8e8e2c696fa5fcf59e

  • SHA512

    728e83d4782347f8959c528579e504ec38fb8c5c18ebacceb106c46d5462ed731a685be3db0450d0dc5eb08f3f9ead13d5080ce244408e3d371e760dd159d70e

  • SSDEEP

    12288:1UTyp3ZXSXsy8p4pymXXOZ4z2im3eyOYZ/w4FGVIa9A30xT5uUPDP:1UTSo/Bpu4qim3nZ/wB9+wT5fP

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

windows securityy

C2

192.253.245.243:7812

Mutex

VNM_MUTEX_Lwt9GYx0ZlES09069Z

Attributes
  • encryption_key

    AhFntNS40ejah7Nv2cWL

  • install_name

    Window Security Health Service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    window update

  • subdirectory

    windows Service32

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • Executes dropped EXE 10 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BitcoinFakeTransaction\BitcoinFakeTransaction.exe
    "C:\Users\Admin\AppData\Local\Temp\BitcoinFakeTransaction\BitcoinFakeTransaction.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
      "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
        "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
        3⤵
        • Executes dropped EXE
        PID:4268
      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
        "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
        3⤵
        • Executes dropped EXE
        PID:2148
      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
        "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
        3⤵
        • Executes dropped EXE
        PID:2344
      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
        "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
        3⤵
        • Executes dropped EXE
        PID:1480
      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe
        "C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe"
        3⤵
        • Executes dropped EXE
        PID:4700
    • C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe
      "C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:564
      • C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe
        "C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe"
        3⤵
        • Modifies Windows Defender Real-time Protection settings
        • Executes dropped EXE
        • Checks computer location settings
        • Windows security modification
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4412
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "window update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe" /rl HIGHEST /f
          4⤵
          • Creates scheduled task(s)
          PID:3548
        • C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe
          "C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:3584
          • C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe
            "C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4204
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks" /create /tn "window update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe" /rl HIGHEST /f
              6⤵
              • Creates scheduled task(s)
              PID:4832
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3632
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1340
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
            5⤵
              PID:4580
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4412 -s 2512
            4⤵
            • Program crash
            PID:1908
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4412 -ip 4412
      1⤵
        PID:5112

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Window Security Health Service.exe.log

        Filesize

        507B

        MD5

        8cf94b5356be60247d331660005941ec

        SHA1

        fdedb361f40f22cb6a086c808fc0056d4e421131

        SHA256

        52a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0

        SHA512

        b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651

      • C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • C:\Users\Admin\AppData\Local\Temp\Aimtxznnlqlhr.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • C:\Users\Admin\AppData\Local\Temp\JpzYvteRjugY.bat

        Filesize

        210B

        MD5

        090e285f5635127637fd2897b84be199

        SHA1

        62aa00c1215cc454dd48efefe46eb566b5fdb9c4

        SHA256

        ceefef8ab462a7766e99776d5b96562d63d03c0a508e977348e5069a145bfe7a

        SHA512

        2e00ed063dd2238f4f297931abc56d8631b5d774137ef46c074bfb9abd7b9fa3dd08e0b46676aa369d4170a5715d6ba06d8fe597f15da42f40ac0f46fb20adb5

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Local\Temp\Mvjdejeez.exe

        Filesize

        206KB

        MD5

        01af6f42da188981c1a00494199fdfbc

        SHA1

        3147729b4e4df80628e658ae173bb6b8c7fd4479

        SHA256

        4b128169df80bba5f09ca7fb7aefdc03ccca3b7c4ef3f5af5af582af217f3b50

        SHA512

        d73233fde28540b5203484e5303453322cdeaadfec1373745d3c6d9569d511387ddcb882f261f76825673ce5608d628432ea5066da384bac8d2c2e4a067222e0

      • C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • C:\Users\Admin\AppData\Roaming\windows Service32\Window Security Health Service.exe

        Filesize

        665KB

        MD5

        a9a1e7fecf84681f351d9d84c9a0b93d

        SHA1

        b82971b2c422e29a3062d42d38151926a84b2d50

        SHA256

        8172ce0605bb35ab5d7e2fab3f9dd3918e246e782797f9e7439527fd197623da

        SHA512

        ad1c5efac370054da119f85d4aae453df26673fe4b28a8e0157166d233659ce5690270731ac482a8948b82c908dbf7dfde3d46cf3c547272567063379531a435

      • memory/564-143-0x0000000005B20000-0x00000000060C4000-memory.dmp

        Filesize

        5.6MB

      • memory/564-145-0x0000000005610000-0x00000000056AC000-memory.dmp

        Filesize

        624KB

      • memory/564-136-0x0000000000000000-mapping.dmp

      • memory/564-141-0x0000000000B70000-0x0000000000C1C000-memory.dmp

        Filesize

        688KB

      • memory/564-144-0x0000000005570000-0x0000000005602000-memory.dmp

        Filesize

        584KB

      • memory/1112-134-0x0000000000000000-mapping.dmp

      • memory/1112-142-0x0000000000520000-0x000000000055A000-memory.dmp

        Filesize

        232KB

      • memory/1340-189-0x0000000000000000-mapping.dmp

      • memory/1480-158-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1480-157-0x0000000000000000-mapping.dmp

      • memory/1480-160-0x0000000005D10000-0x0000000005D1A000-memory.dmp

        Filesize

        40KB

      • memory/2148-151-0x0000000000000000-mapping.dmp

      • memory/2344-155-0x0000000000000000-mapping.dmp

      • memory/3548-164-0x0000000000000000-mapping.dmp

      • memory/3584-165-0x0000000000000000-mapping.dmp

      • memory/3632-183-0x0000000007220000-0x000000000723A000-memory.dmp

        Filesize

        104KB

      • memory/3632-187-0x0000000007560000-0x000000000757A000-memory.dmp

        Filesize

        104KB

      • memory/3632-184-0x0000000007290000-0x000000000729A000-memory.dmp

        Filesize

        40KB

      • memory/3632-185-0x00000000074A0000-0x0000000007536000-memory.dmp

        Filesize

        600KB

      • memory/3632-180-0x0000000070200000-0x000000007024C000-memory.dmp

        Filesize

        304KB

      • memory/3632-167-0x0000000000000000-mapping.dmp

      • memory/3632-188-0x0000000007540000-0x0000000007548000-memory.dmp

        Filesize

        32KB

      • memory/3632-179-0x00000000064E0000-0x0000000006512000-memory.dmp

        Filesize

        200KB

      • memory/3632-171-0x0000000004940000-0x0000000004976000-memory.dmp

        Filesize

        216KB

      • memory/3632-182-0x0000000007860000-0x0000000007EDA000-memory.dmp

        Filesize

        6.5MB

      • memory/3632-186-0x0000000007450000-0x000000000745E000-memory.dmp

        Filesize

        56KB

      • memory/3632-174-0x0000000004FE0000-0x0000000005608000-memory.dmp

        Filesize

        6.2MB

      • memory/3632-175-0x0000000004F50000-0x0000000004F72000-memory.dmp

        Filesize

        136KB

      • memory/3632-176-0x0000000005840000-0x00000000058A6000-memory.dmp

        Filesize

        408KB

      • memory/3632-177-0x0000000005F20000-0x0000000005F3E000-memory.dmp

        Filesize

        120KB

      • memory/3632-181-0x00000000064C0000-0x00000000064DE000-memory.dmp

        Filesize

        120KB

      • memory/4204-169-0x0000000000000000-mapping.dmp

      • memory/4268-146-0x0000000000000000-mapping.dmp

      • memory/4412-163-0x0000000006A60000-0x0000000006A9C000-memory.dmp

        Filesize

        240KB

      • memory/4412-162-0x00000000064F0000-0x0000000006502000-memory.dmp

        Filesize

        72KB

      • memory/4412-161-0x0000000005780000-0x00000000057E6000-memory.dmp

        Filesize

        408KB

      • memory/4412-148-0x0000000000400000-0x000000000048C000-memory.dmp

        Filesize

        560KB

      • memory/4412-147-0x0000000000000000-mapping.dmp

      • memory/4580-190-0x0000000000000000-mapping.dmp

      • memory/4700-153-0x0000000000000000-mapping.dmp

      • memory/4732-132-0x00000000004C0000-0x00000000005C0000-memory.dmp

        Filesize

        1024KB

      • memory/4732-140-0x00007FFF2CB60000-0x00007FFF2D621000-memory.dmp

        Filesize

        10.8MB

      • memory/4732-133-0x00007FFF2CB60000-0x00007FFF2D621000-memory.dmp

        Filesize

        10.8MB

      • memory/4832-178-0x0000000000000000-mapping.dmp