Analysis

  • max time kernel
    155s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-08-2021 17:11

General

  • Target

    5984c5c2b4ccc824c196ad3a9f966013.exe

  • Size

    151KB

  • MD5

    5984c5c2b4ccc824c196ad3a9f966013

  • SHA1

    6f5c96fb67b4b88d08d0b4e28001421366c4cd66

  • SHA256

    7e92233d9ad854b672068825a64c442ed8e6f4f283729c874296278e235d7241

  • SHA512

    443ba4a8df892f3d0a6a7bc70233c639e92af87e9beb38dbdd4396f0896dd640a1fde3e513a73de6b13c6add3801bc34b90659bcd0e71cc05eb7fdb0c1c573b8

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforaugust1.xyz/

http://readinglistforaugust2.xyz/

http://readinglistforaugust3.xyz/

http://readinglistforaugust4.xyz/

http://readinglistforaugust5.xyz/

http://readinglistforaugust6.xyz/

http://readinglistforaugust7.xyz/

http://readinglistforaugust8.xyz/

http://readinglistforaugust9.xyz/

http://readinglistforaugust10.xyz/

http://readinglistforaugust1.site/

http://readinglistforaugust2.site/

http://readinglistforaugust3.site/

http://readinglistforaugust4.site/

http://readinglistforaugust5.site/

http://readinglistforaugust6.site/

http://readinglistforaugust7.site/

http://readinglistforaugust8.site/

http://readinglistforaugust9.site/

http://readinglistforaugust10.site/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

fe582536ec580228180f270f7cb80a867860e010

Attributes
  • url4cnc

    https://telete.in/xylichanjk

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

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

  • RedLine Payload 2 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Nirsoft 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 9 IoCs
  • Checks BIOS information in registry 2 TTPs 8 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 9 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5984c5c2b4ccc824c196ad3a9f966013.exe
    "C:\Users\Admin\AppData\Local\Temp\5984c5c2b4ccc824c196ad3a9f966013.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Users\Admin\AppData\Local\Temp\5984c5c2b4ccc824c196ad3a9f966013.exe
      "C:\Users\Admin\AppData\Local\Temp\5984c5c2b4ccc824c196ad3a9f966013.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1808
  • C:\Users\Admin\AppData\Local\Temp\BF97.exe
    C:\Users\Admin\AppData\Local\Temp\BF97.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1512
  • C:\Users\Admin\AppData\Local\Temp\C0C1.exe
    C:\Users\Admin\AppData\Local\Temp\C0C1.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Modifies system certificate store
    PID:912
  • C:\Users\Admin\AppData\Local\Temp\C3DD.exe
    C:\Users\Admin\AppData\Local\Temp\C3DD.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:820
  • C:\Users\Admin\AppData\Local\Temp\CF72.exe
    C:\Users\Admin\AppData\Local\Temp\CF72.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1564
  • C:\Users\Admin\AppData\Local\Temp\D6F2.exe
    C:\Users\Admin\AppData\Local\Temp\D6F2.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:924
  • C:\Users\Admin\AppData\Local\Temp\DBC4.exe
    C:\Users\Admin\AppData\Local\Temp\DBC4.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:904
  • C:\Users\Admin\AppData\Local\Temp\E566.exe
    C:\Users\Admin\AppData\Local\Temp\E566.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Users\Admin\AppData\Local\Temp\805a9b90-ee3c-4f12-bec0-f2b94c59f31a\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\805a9b90-ee3c-4f12-bec0-f2b94c59f31a\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\805a9b90-ee3c-4f12-bec0-f2b94c59f31a\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1648
  • C:\Users\Admin\AppData\Local\Temp\EBFB.exe
    C:\Users\Admin\AppData\Local\Temp\EBFB.exe
    1⤵
    • Executes dropped EXE
    PID:684
  • C:\Users\Admin\AppData\Local\Temp\EDB1.exe
    C:\Users\Admin\AppData\Local\Temp\EDB1.exe
    1⤵
      PID:1088

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/820-76-0x0000000000F30000-0x0000000000F31000-memory.dmp

      Filesize

      4KB

    • memory/820-83-0x0000000002A20000-0x0000000002A21000-memory.dmp

      Filesize

      4KB

    • memory/904-98-0x0000000000930000-0x0000000000931000-memory.dmp

      Filesize

      4KB

    • memory/904-101-0x0000000004D60000-0x0000000004D61000-memory.dmp

      Filesize

      4KB

    • memory/912-78-0x00000000002C0000-0x000000000034F000-memory.dmp

      Filesize

      572KB

    • memory/912-79-0x0000000000400000-0x00000000023EA000-memory.dmp

      Filesize

      31.9MB

    • memory/924-94-0x00000000001D0000-0x00000000001D1000-memory.dmp

      Filesize

      4KB

    • memory/924-100-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

      Filesize

      4KB

    • memory/1200-64-0x00000000029B0000-0x00000000029C6000-memory.dmp

      Filesize

      88KB

    • memory/1276-105-0x00000000001A0000-0x00000000001A1000-memory.dmp

      Filesize

      4KB

    • memory/1276-108-0x0000000004F00000-0x0000000004F01000-memory.dmp

      Filesize

      4KB

    • memory/1276-109-0x0000000000970000-0x0000000000A22000-memory.dmp

      Filesize

      712KB

    • memory/1564-89-0x00000000051B0000-0x00000000051B1000-memory.dmp

      Filesize

      4KB

    • memory/1564-85-0x00000000001A0000-0x00000000001A1000-memory.dmp

      Filesize

      4KB

    • memory/1808-62-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

      Filesize

      8KB

    • memory/1808-60-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/1828-63-0x00000000001B0000-0x00000000001BA000-memory.dmp

      Filesize

      40KB