Analysis

  • max time kernel
    151s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    06/01/2022, 20:01

General

  • Target
    23dfe6757086dde5e8463811731f60c6.exe
  • Size 299KB
  • Sample220106-yrlxeacaap
  • SHA256 6c02cd3294f998736222c255ddd163b9d5e72dfbf3492bfdd43519a46ed609de
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-data-coin-11.com/

  • http://file-coin-host-12.com/

  • http://srtuiyhuali.at/

  • http://fufuiloirtu.com/

  • http://amogohuigotuli.at/

  • http://novohudosovu.com/

  • http://brutuilionust.com/

  • http://bubushkalioua.com/

  • http://dumuilistrati.at/

  • http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family
  • raccoon

Botnet
  • 10da56e7e71e97bdc1f36eb76813bbc3231de7e4

Attributes
  • url4cnc

    http://194.180.174.53/capibar

    http://91.219.236.18/capibar

    http://194.180.174.41/capibar

    http://91.219.236.148/capibar

    https://t.me/capibar

rc4.plain
rc4.plain

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Arkei Stealer Payload 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 10 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • 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 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23dfe6757086dde5e8463811731f60c6.exe
    "C:\Users\Admin\AppData\Local\Temp\23dfe6757086dde5e8463811731f60c6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\AppData\Local\Temp\23dfe6757086dde5e8463811731f60c6.exe
      "C:\Users\Admin\AppData\Local\Temp\23dfe6757086dde5e8463811731f60c6.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1336
  • C:\Users\Admin\AppData\Local\Temp\150B.exe
    C:\Users\Admin\AppData\Local\Temp\150B.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3716
  • C:\Users\Admin\AppData\Local\Temp\27D8.exe
    C:\Users\Admin\AppData\Local\Temp\27D8.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3144
    • C:\Users\Admin\AppData\Local\Temp\27D8.exe
      C:\Users\Admin\AppData\Local\Temp\27D8.exe
      2⤵
      • Executes dropped EXE
      PID:2776
  • C:\Users\Admin\AppData\Local\Temp\3E7E.exe
    C:\Users\Admin\AppData\Local\Temp\3E7E.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1796
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3E7E.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:3140
  • C:\Users\Admin\AppData\Local\Temp\5285.exe
    C:\Users\Admin\AppData\Local\Temp\5285.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:704
    • C:\Users\Admin\AppData\Local\Temp\5285.exe
      C:\Users\Admin\AppData\Local\Temp\5285.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1396
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
    • Accesses Microsoft Outlook profiles
    • outlook_office_path
    • outlook_win_path
    PID:1964
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe
    1⤵
      PID:2200
    • C:\Users\Admin\AppData\Local\Temp\BBFE.exe
      C:\Users\Admin\AppData\Local\Temp\BBFE.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:3548
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\BBFE.exe" & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2756
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          3⤵
          • Delays execution with timeout.exe
          PID:3864
    • C:\Users\Admin\AppData\Local\Temp\D1E8.exe
      C:\Users\Admin\AppData\Local\Temp\D1E8.exe
      1⤵
      • Executes dropped EXE
      PID:1036
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1036 -s 1212
        2⤵
        • Suspicious use of NtCreateProcessExOtherParentProcess
        • Program crash
        • Suspicious use of AdjustPrivilegeToken
        PID:3484
    • C:\Users\Admin\AppData\Local\Temp\26F.exe
      C:\Users\Admin\AppData\Local\Temp\26F.exe
      1⤵
      • Executes dropped EXE
      PID:808
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 400
        2⤵
        • Program crash
        • Suspicious use of AdjustPrivilegeToken
        PID:3240
    • C:\Users\Admin\AppData\Local\Temp\F41.exe
      C:\Users\Admin\AppData\Local\Temp\F41.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      PID:2536

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/704-143-0x0000000000BF0000-0x0000000000C7A000-memory.dmp

          memory/704-144-0x0000000000BF0000-0x0000000000C7A000-memory.dmp

          memory/704-145-0x0000000005460000-0x00000000054D6000-memory.dmp

          memory/704-146-0x0000000005440000-0x000000000545E000-memory.dmp

          memory/704-147-0x00000000056A0000-0x00000000056A1000-memory.dmp

          memory/704-148-0x00000000053C0000-0x00000000053C1000-memory.dmp

          memory/704-149-0x0000000005BB0000-0x00000000060AE000-memory.dmp

          memory/808-210-0x00000000024E0000-0x0000000002540000-memory.dmp

          memory/1036-205-0x0000000002830000-0x00000000028C2000-memory.dmp

          memory/1036-199-0x0000000000AEC000-0x0000000000B49000-memory.dmp

          memory/1036-204-0x0000000002680000-0x00000000026D0000-memory.dmp

          memory/1036-193-0x0000000000400000-0x0000000000885000-memory.dmp

          memory/1036-191-0x0000000000A73000-0x0000000000AE7000-memory.dmp

          memory/1036-192-0x0000000000D60000-0x0000000000DF7000-memory.dmp

          memory/1036-203-0x0000000000400000-0x0000000000885000-memory.dmp

          memory/1036-206-0x0000000000400000-0x0000000000885000-memory.dmp

          memory/1036-202-0x0000000000400000-0x0000000000885000-memory.dmp

          memory/1036-200-0x0000000000400000-0x0000000000885000-memory.dmp

          memory/1036-201-0x00000000025A0000-0x0000000002635000-memory.dmp

          memory/1336-116-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/1396-159-0x0000000004E20000-0x0000000004E5E000-memory.dmp

          memory/1396-160-0x0000000004E60000-0x0000000004EAB000-memory.dmp

          memory/1396-168-0x0000000006820000-0x00000000069E2000-memory.dmp

          memory/1396-169-0x0000000006F20000-0x000000000744C000-memory.dmp

          memory/1396-166-0x0000000005B70000-0x0000000005B8E000-memory.dmp

          memory/1396-165-0x0000000005E30000-0x000000000632E000-memory.dmp

          memory/1396-164-0x0000000005270000-0x0000000005302000-memory.dmp

          memory/1396-163-0x00000000051F0000-0x0000000005266000-memory.dmp

          memory/1396-161-0x0000000004D10000-0x0000000005316000-memory.dmp

          memory/1396-167-0x0000000005D30000-0x0000000005D96000-memory.dmp

          memory/1396-158-0x0000000004EF0000-0x0000000004FFA000-memory.dmp

          memory/1396-157-0x0000000004DC0000-0x0000000004DD2000-memory.dmp

          memory/1396-156-0x0000000005320000-0x0000000005926000-memory.dmp

          memory/1396-155-0x0000000000400000-0x0000000000420000-memory.dmp

          memory/1396-154-0x0000000000400000-0x0000000000420000-memory.dmp

          memory/1396-150-0x0000000000400000-0x0000000000420000-memory.dmp

          memory/1796-138-0x00000000001C0000-0x00000000001DC000-memory.dmp

          memory/1796-137-0x00000000005C1000-0x00000000005D3000-memory.dmp

          memory/1796-139-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/1964-174-0x0000000000800000-0x0000000000874000-memory.dmp

          memory/1964-175-0x0000000000530000-0x000000000059B000-memory.dmp

          memory/2200-177-0x0000000000FE0000-0x0000000000FEC000-memory.dmp

          memory/2200-176-0x0000000000FF0000-0x0000000000FF7000-memory.dmp

          memory/2472-119-0x0000000000F70000-0x0000000000F86000-memory.dmp

          memory/2472-133-0x0000000002820000-0x0000000002836000-memory.dmp

          memory/2536-217-0x00000000766E0000-0x00000000768A2000-memory.dmp

          memory/2536-228-0x0000000074F00000-0x0000000076248000-memory.dmp

          memory/2536-239-0x0000000007810000-0x0000000007860000-memory.dmp

          memory/2536-238-0x0000000008A00000-0x0000000008F2C000-memory.dmp

          memory/2536-237-0x0000000008300000-0x00000000084C2000-memory.dmp

          memory/2536-236-0x0000000006D80000-0x0000000006D9E000-memory.dmp

          memory/2536-235-0x0000000007180000-0x000000000767E000-memory.dmp

          memory/2536-234-0x0000000006BE0000-0x0000000006C72000-memory.dmp

          memory/2536-233-0x00000000069C0000-0x0000000006A36000-memory.dmp

          memory/2536-232-0x0000000005F30000-0x0000000005F96000-memory.dmp

          memory/2536-231-0x000000006F110000-0x000000006F15B000-memory.dmp

          memory/2536-230-0x0000000005C40000-0x0000000005C8B000-memory.dmp

          memory/2536-229-0x0000000003250000-0x0000000003251000-memory.dmp

          memory/2536-226-0x00000000741F0000-0x0000000074774000-memory.dmp

          memory/2536-227-0x0000000003160000-0x00000000031A5000-memory.dmp

          memory/2536-225-0x0000000005C00000-0x0000000005C3E000-memory.dmp

          memory/2536-224-0x0000000005CD0000-0x0000000005DDA000-memory.dmp

          memory/2536-223-0x0000000005BA0000-0x0000000005BB2000-memory.dmp

          memory/2536-214-0x0000000001340000-0x00000000013D0000-memory.dmp

          memory/2536-215-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

          memory/2536-216-0x0000000001340000-0x00000000013D0000-memory.dmp

          memory/2536-222-0x0000000006130000-0x0000000006736000-memory.dmp

          memory/2536-218-0x00000000764E0000-0x00000000765D1000-memory.dmp

          memory/2536-219-0x0000000001340000-0x00000000013D0000-memory.dmp

          memory/2536-221-0x0000000070E50000-0x0000000070ED0000-memory.dmp

          memory/2536-220-0x0000000001340000-0x00000000013D0000-memory.dmp

          memory/3548-184-0x0000000000E00000-0x0000000000EB6000-memory.dmp

          memory/3548-183-0x0000000000E00000-0x0000000000EB6000-memory.dmp

          memory/3548-185-0x0000000000C60000-0x0000000000C61000-memory.dmp

          memory/3548-186-0x00000000766E0000-0x00000000768A2000-memory.dmp

          memory/3548-187-0x0000000000B00000-0x0000000000C4A000-memory.dmp

          memory/3716-124-0x0000000000030000-0x0000000000039000-memory.dmp

          memory/3716-125-0x0000000000400000-0x000000000046D000-memory.dmp

          memory/3716-123-0x00000000007A3000-0x00000000007B4000-memory.dmp

          memory/3988-115-0x0000000000591000-0x00000000005A2000-memory.dmp

          memory/3988-118-0x0000000000030000-0x0000000000039000-memory.dmp