Analysis

  • max time kernel
    35s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    10-11-2020 11:36

General

  • Target

    b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe

  • Size

    166KB

  • MD5

    30168bc8ecd55affc43b224091c6945f

  • SHA1

    e5cdc65b57a027d7123307ecaf12031bb789aed7

  • SHA256

    b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb

  • SHA512

    60650f2779128ef54d648dbf8e83b5ed079aef99f23df5a29ec50e3672793e8a103214f03af4d74e132aa35cc099aab5eaa4f8e0a76f0878f591470f7bafb138

Malware Config

Extracted

Family

revengerat

Botnet

NyanCatRevenge

C2

hpdndbnb.duckdns.org:2404

Mutex

90a49aa7c27647e

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • RevengeRAT

    Remote-access trojan with a wide range of capabilities.

  • Turns off Windows Defender SpyNet reporting 2 TTPs
  • Windows security bypass 2 TTPs
  • Drops startup file 2 IoCs
  • Windows security modification 2 TTPs 11 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe
    "C:\Users\Admin\AppData\Local\Temp\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2672
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2824
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4008
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1764
    • C:\Users\Admin\AppData\Local\Temp\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe
      "C:\Users\Admin\AppData\Local\Temp\b2bd3de3e5b0e35313263bef4b1ca49c5478d472f6d37d1070a57b1f6aa4f7bb.exe"
      2⤵
      • Checks processor information in registry
      PID:4116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 756 -s 2196
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4256

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

5
T1112

Disabling Security Tools

3
T1089

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
    MD5

    db01a2c1c7e70b2b038edf8ad5ad9826

    SHA1

    540217c647a73bad8d8a79e3a0f3998b5abd199b

    SHA256

    413da361d77055dae7007f82b58b366c8783aa72e0b8fbe41519b940c253b38d

    SHA512

    c76ff57fcee5cdf9fdf3116d4e1dc0cf106867bf19ab474b763e242acf5dca9a7509cb837c35e130c3e056636b4e8a4e135512a978bcd3dd641e20f5bf76c3d6

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    MD5

    5300bce03b8940c3647d921f9d748fee

    SHA1

    2a52bd3bbbe4c8ba062f5e7c8608497d39cfbb25

    SHA256

    ca334a4d92ecac77692a5446499cbc695af4973a91dd679ba1de07bb9a90d0ba

    SHA512

    84560535c0c9733bb151e9f09a8bf7dfdb7e66a4877b716d376096794901a6c9a33f4ab49a2213f3f22538098b2edf57bbfcfb62402303c537fa55972f6d0a2d

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    MD5

    252e350197c98c1e253568caa0bb55b5

    SHA1

    df8df418d3eae38521f826f4104248789b30c318

    SHA256

    f1e333ebb6a7a896fd65517554d9e51b16b4c879b066c2d0ab7ea3ebaca23b19

    SHA512

    03e395c331b4c2f39834bc2c6c40737016b5126405c28f221d97af8d265f177b3551d7d9f1869a1f8a82d53701f312d58628105f62da19f444360c49aadc1276

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    MD5

    f4f46f90dc340199cfdb7cdaf49ff91b

    SHA1

    7e3e1ae5ce536e4f8f39af3d34a5f62647b7139a

    SHA256

    79b6e6f769516908810a23e18dce78af696acb0e1c9669d0e7e69c9bb4853f10

    SHA512

    3e8d751c0cdf9f74df2035d6cc107f828f9737418e2b238f1c2552bedbdefede5e07ec35977a005f742af15dcae20118df6a7b12de3e5e00e9556bc9b829a568

  • memory/756-1-0x0000000000310000-0x0000000000311000-memory.dmp
    Filesize

    4KB

  • memory/756-3-0x0000000004B20000-0x0000000004B21000-memory.dmp
    Filesize

    4KB

  • memory/756-4-0x0000000004A80000-0x0000000004A9C000-memory.dmp
    Filesize

    112KB

  • memory/756-5-0x0000000005200000-0x0000000005201000-memory.dmp
    Filesize

    4KB

  • memory/756-0-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/1764-19-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/1764-10-0x0000000000000000-mapping.dmp
  • memory/1764-100-0x00000000099B0000-0x00000000099B1000-memory.dmp
    Filesize

    4KB

  • memory/2672-27-0x0000000007510000-0x0000000007511000-memory.dmp
    Filesize

    4KB

  • memory/2672-13-0x0000000006DE0000-0x0000000006DE1000-memory.dmp
    Filesize

    4KB

  • memory/2672-6-0x0000000000000000-mapping.dmp
  • memory/2672-22-0x0000000006B10000-0x0000000006B11000-memory.dmp
    Filesize

    4KB

  • memory/2672-24-0x0000000006BB0000-0x0000000006BB1000-memory.dmp
    Filesize

    4KB

  • memory/2672-25-0x0000000006C20000-0x0000000006C21000-memory.dmp
    Filesize

    4KB

  • memory/2672-11-0x0000000004170000-0x0000000004171000-memory.dmp
    Filesize

    4KB

  • memory/2672-38-0x0000000006CF0000-0x0000000006CF1000-memory.dmp
    Filesize

    4KB

  • memory/2672-39-0x0000000007C20000-0x0000000007C21000-memory.dmp
    Filesize

    4KB

  • memory/2672-9-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/2824-104-0x0000000009D00000-0x0000000009D01000-memory.dmp
    Filesize

    4KB

  • memory/2824-110-0x00000000097A0000-0x00000000097A1000-memory.dmp
    Filesize

    4KB

  • memory/2824-52-0x0000000008A80000-0x0000000008A81000-memory.dmp
    Filesize

    4KB

  • memory/2824-12-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/2824-7-0x0000000000000000-mapping.dmp
  • memory/4008-91-0x0000000008F20000-0x0000000008F21000-memory.dmp
    Filesize

    4KB

  • memory/4008-87-0x0000000008A60000-0x0000000008A61000-memory.dmp
    Filesize

    4KB

  • memory/4008-14-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/4008-63-0x0000000008DF0000-0x0000000008E23000-memory.dmp
    Filesize

    204KB

  • memory/4008-8-0x0000000000000000-mapping.dmp
  • memory/4116-48-0x00000000739A0000-0x000000007408E000-memory.dmp
    Filesize

    6.9MB

  • memory/4116-46-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/4116-47-0x000000000040501E-mapping.dmp
  • memory/4256-57-0x0000000005520000-0x0000000005521000-memory.dmp
    Filesize

    4KB

  • memory/4256-56-0x0000000004D60000-0x0000000004D61000-memory.dmp
    Filesize

    4KB