Analysis

  • max time kernel
    133s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    18-01-2022 16:53

General

  • Target

    8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe

  • Size

    1.6MB

  • MD5

    b5d3bb71ea746a115af16ec859cb0cbf

  • SHA1

    8a56a6da989c5a1e4bceea554de821387e9e01e7

  • SHA256

    8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741

  • SHA512

    9025428ba9c3c48863a6415603e5e1b157f548fb3e637ee31e21eaa7a0a6c3bd8a535fae2a17ad27ea937ad5e9084ae3d3a8e16f85a49779ce2d66a351ac699e

Malware Config

Extracted

Family

vidar

Version

49.7

Botnet

1131

C2

https://mastodon.online/@prophef1

https://koyu.space/@prophef2

Attributes
  • profile_id

    1131

Extracted

Family

systembc

C2

mainscpnl.xyz:4207

backpscpnl.xyz:4207

Signatures

  • SystemBC

    SystemBC is a proxy and remote administration tool first seen in 2019.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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 Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

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

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

  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 6 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe
    "C:\Users\Admin\AppData\Local\Temp\8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe"
    1⤵
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\ProgramData\0CC125T532CGGKMV.exe
      "C:\ProgramData\0CC125T532CGGKMV.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      PID:1160
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 8c8fd0120327d4795bcf8fcf2ce131a480ae41cf200e844bc1eb0185cd2d3741.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3456
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:632
  • C:\ProgramData\0CC125T532CGGKMV.exe
    C:\ProgramData\0CC125T532CGGKMV.exe start
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Drops file in Windows directory
    PID:2556
  • C:\Windows\TEMP\uaufsdg.exe
    C:\Windows\TEMP\uaufsdg.exe
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Drops file in Windows directory
    PID:1512
  • C:\Windows\TEMP\uaufsdg.exe
    C:\Windows\TEMP\uaufsdg.exe start
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    PID:2148

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\0CC125T532CGGKMV.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • C:\ProgramData\0CC125T532CGGKMV.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • C:\ProgramData\0CC125T532CGGKMV.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • C:\ProgramData\freebl3.dll

    MD5

    ef2834ac4ee7d6724f255beaf527e635

    SHA1

    5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

    SHA256

    a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

    SHA512

    c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

  • C:\ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\msvcp140.dll

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • C:\ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\softokn3.dll

    MD5

    a2ee53de9167bf0d6c019303b7ca84e5

    SHA1

    2a3c737fa1157e8483815e98b666408a18c0db42

    SHA256

    43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

    SHA512

    45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

  • C:\ProgramData\vcruntime140.dll

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • C:\Windows\TEMP\uaufsdg.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • C:\Windows\Tasks\wow64.job

    MD5

    b1da2260a807a6e963204ec2fdce6d7e

    SHA1

    ff5d144cee1b936eddfc0b7e2a128ab8c20f0721

    SHA256

    7c88ca4e9ea0fdd2dff4e33d1934672ce3198b26ac2fcfdc54113df32aa819bb

    SHA512

    ca9a5f428e1261ca007e981f395eafa461f337a62c998831a616544df41bb68e3b267ff76b9b68189971694cd677a95f41f85d4f9e559d0ecede7950f54fb728

  • C:\Windows\Temp\uaufsdg.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • C:\Windows\Temp\uaufsdg.exe

    MD5

    a692018d2b9c401318fe8e49903c8e7f

    SHA1

    c443761f15cd362b6aff6aa1dc17a3127e9527a6

    SHA256

    b297268489b285cb347ca9a7efc9339d36505e61bfd9b29719321e4164c8c9cf

    SHA512

    4be1b1a95c56cdb9e2b0e9c3ca4b235911da1c4a881f37d44ced0bc55a6a49b64244814089487c23a90a360a9f4eb57005efb2b0cdd668ef5df1afd03b0e5baa

  • \ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/1160-131-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/1160-130-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/1160-132-0x00000000007A0000-0x00000000008EA000-memory.dmp

    Filesize

    1.3MB

  • memory/1160-133-0x00000000007A0000-0x00000000008EA000-memory.dmp

    Filesize

    1.3MB

  • memory/1160-134-0x0000000000800000-0x0000000000807000-memory.dmp

    Filesize

    28KB

  • memory/1160-129-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/1512-159-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/1512-161-0x00000000001A0000-0x00000000001DB000-memory.dmp

    Filesize

    236KB

  • memory/1512-160-0x0000000000120000-0x0000000000121000-memory.dmp

    Filesize

    4KB

  • memory/1512-162-0x0000000000180000-0x0000000000181000-memory.dmp

    Filesize

    4KB

  • memory/1512-158-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/1512-163-0x0000000000870000-0x0000000000877000-memory.dmp

    Filesize

    28KB

  • memory/2148-178-0x0000000001200000-0x000000000123B000-memory.dmp

    Filesize

    236KB

  • memory/2148-179-0x00000000007A0000-0x00000000008EA000-memory.dmp

    Filesize

    1.3MB

  • memory/2148-173-0x00000000011A0000-0x00000000011A7000-memory.dmp

    Filesize

    28KB

  • memory/2148-171-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/2148-170-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/2556-141-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/2556-140-0x0000000000400000-0x0000000000598000-memory.dmp

    Filesize

    1.6MB

  • memory/2556-149-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/2556-148-0x00000000011F0000-0x000000000122B000-memory.dmp

    Filesize

    236KB

  • memory/2556-143-0x0000000001190000-0x0000000001197000-memory.dmp

    Filesize

    28KB

  • memory/2556-142-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB

  • memory/2652-124-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-115-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-118-0x0000000002500000-0x0000000002543000-memory.dmp

    Filesize

    268KB

  • memory/2652-117-0x0000000076130000-0x00000000762F2000-memory.dmp

    Filesize

    1.8MB

  • memory/2652-116-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/2652-119-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-120-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-121-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-122-0x0000000000400000-0x0000000000794000-memory.dmp

    Filesize

    3.6MB

  • memory/2652-123-0x00000000774B0000-0x000000007763E000-memory.dmp

    Filesize

    1.6MB