Analysis

  • max time kernel
    155s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20/06/2022, 18:54

General

  • Target

    31921b3a6cda29d2c558228386be3e7c11913304c79af5e1cf75b9b0ef76082b.exe

  • Size

    4.4MB

  • MD5

    92ec6823c3c2a1a0085a562ffd486e09

  • SHA1

    9744dd35c51b0e6dabf2df7d4eeb80e9ee16465c

  • SHA256

    31921b3a6cda29d2c558228386be3e7c11913304c79af5e1cf75b9b0ef76082b

  • SHA512

    5122d23072bbbe409a4f0c4e6718e777137da23018755ec7fd8ff5329455cbdad56a72c19d1fee154adf45d51e0eb632daf320e3b1618470cdfe08bd82c867d7

Malware Config

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

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

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 18 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31921b3a6cda29d2c558228386be3e7c11913304c79af5e1cf75b9b0ef76082b.exe
    "C:\Users\Admin\AppData\Local\Temp\31921b3a6cda29d2c558228386be3e7c11913304c79af5e1cf75b9b0ef76082b.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setup.exe
      "C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setup.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      PID:4684
    • C:\Windows\SysWOW64\CScript.exe
      "C:\Windows\system32\CScript.exe" "C:\Program Files (x86)\Ferr\SEDA\SX\bin\ipras.vbs" //e:vbscript //B //NOLOGO
      2⤵
      • Blocklisted process makes network request
      PID:4836
    • C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setupres.exe
      "C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setupres.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks computer location settings
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:2248

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setup.exe

    Filesize

    2.2MB

    MD5

    f5801cffd818876171a45c786d4d2689

    SHA1

    8122508e6258e383680f7a41cd3bf31a5bea5516

    SHA256

    82d64c075563dc703678a96f8ef2d1d6bb2bec4539069149776a7e6c4c8eb756

    SHA512

    92777974c6cc73c3ea8b6fd2a47e7262750bfdceb636f3c9f95baf38aef171772ec0c8dc4abc30dfd8385cb46a6d7ed9a7b8bd2b36d0a76717b2ad5728f39c88

  • C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setup.exe

    Filesize

    2.2MB

    MD5

    f5801cffd818876171a45c786d4d2689

    SHA1

    8122508e6258e383680f7a41cd3bf31a5bea5516

    SHA256

    82d64c075563dc703678a96f8ef2d1d6bb2bec4539069149776a7e6c4c8eb756

    SHA512

    92777974c6cc73c3ea8b6fd2a47e7262750bfdceb636f3c9f95baf38aef171772ec0c8dc4abc30dfd8385cb46a6d7ed9a7b8bd2b36d0a76717b2ad5728f39c88

  • C:\Program Files (x86)\Ferr\SEDA\SX\bin\Setupres.exe

    Filesize

    2.0MB

    MD5

    0f624d5fa512faaa708cbac1202a921e

    SHA1

    c79f451ccecc0818a8ba51949906e3c7dc50c303

    SHA256

    c058707f877e96f87127761531912519d3f063ec1af3d05d4df32176bfa1e3ad

    SHA512

    31850ceecf1aa295e0352f064f32744f14a9c1e72aeff577f61dd5b53deb9697ddecdd085abae9f9ff6dd975a8a99fc20fe49227820934ffeb040128988cbbd3

  • C:\Program Files (x86)\Ferr\SEDA\SX\bin\ipras.vbs

    Filesize

    126B

    MD5

    b802ff9244875f69db2fae0f78e92b10

    SHA1

    49385a89cd575894a29fbda969b99cc1f5cf8076

    SHA256

    a1b0cb16fb2ecd66fccf156024404801ad694056e8a596326c1b27b57d8eabe8

    SHA512

    609856415a7ae2b3e260f945f1c8a8d2a28884c202d37181bea948708918f24b42ae03f17dba1520fddc91b2f7a182b0b8f885f33ea6f81bb3ee4c72e4e9350e

  • C:\Users\Admin\AppData\Local\Temp\nsfFA15.tmp\UAC.dll

    Filesize

    14KB

    MD5

    adb29e6b186daa765dc750128649b63d

    SHA1

    160cbdc4cb0ac2c142d361df138c537aa7e708c9

    SHA256

    2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

    SHA512

    b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

  • C:\Users\Admin\AppData\Local\Temp\nsfFA15.tmp\nsExec.dll

    Filesize

    6KB

    MD5

    132e6153717a7f9710dcea4536f364cd

    SHA1

    e39bc82c7602e6dd0797115c2bd12e872a5fb2ab

    SHA256

    d29afce2588d8dd7bb94c00ca91cac0e85b80ffa6b221f5ffcb83a2497228eb2

    SHA512

    9aeb0b3051ce07fb9f03dfee7cea4a5e423425e48cb538173bd2a167817f867a30bd4d27d07875f27ca00031745b24547030b7f146660b049fa717590f1c77e1

  • memory/2248-148-0x0000000000400000-0x0000000000914000-memory.dmp

    Filesize

    5.1MB

  • memory/2248-143-0x00000000773C0000-0x0000000077563000-memory.dmp

    Filesize

    1.6MB

  • memory/2248-149-0x00000000773C0000-0x0000000077563000-memory.dmp

    Filesize

    1.6MB

  • memory/2248-144-0x0000000000400000-0x0000000000914000-memory.dmp

    Filesize

    5.1MB

  • memory/2248-150-0x0000000000400000-0x0000000000914000-memory.dmp

    Filesize

    5.1MB

  • memory/2248-142-0x0000000000400000-0x0000000000914000-memory.dmp

    Filesize

    5.1MB

  • memory/4684-145-0x0000000000410000-0x0000000000963000-memory.dmp

    Filesize

    5.3MB

  • memory/4684-139-0x0000000000410000-0x0000000000963000-memory.dmp

    Filesize

    5.3MB

  • memory/4684-138-0x00000000773C0000-0x0000000077563000-memory.dmp

    Filesize

    1.6MB

  • memory/4684-146-0x00000000773C0000-0x0000000077563000-memory.dmp

    Filesize

    1.6MB

  • memory/4684-147-0x0000000000410000-0x0000000000963000-memory.dmp

    Filesize

    5.3MB

  • memory/4684-136-0x0000000000410000-0x0000000000963000-memory.dmp

    Filesize

    5.3MB