Resubmissions

17-01-2021 19:18

210117-5hwxlye88x 10

17-01-2021 17:05

210117-6jkt8jz44e 10

17-01-2021 10:25

210117-ncy8vksfgn 10

Analysis

  • max time kernel
    156s
  • max time network
    171s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    17-01-2021 19:18

General

  • Target

    1a3642fa7da48a4950a11c6346c5fa1b3a61eff52c076603b1c4d005406cfede.exe

  • Size

    4.3MB

  • MD5

    7b65065d72848703e2aa7a8788e182f8

  • SHA1

    939281d92b016157bc32a36876a957fa141dcce3

  • SHA256

    1a3642fa7da48a4950a11c6346c5fa1b3a61eff52c076603b1c4d005406cfede

  • SHA512

    cba2b883a103adaf2060138ee58f2e1a98520dca5e55b979584c49e42cf36af5915d5b95c7a00cee04766f9808a9dede3ad31d730f8f9873f44809855e3c30a3

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Blocklisted process makes network request 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

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

  • Loads dropped DLL 9 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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a3642fa7da48a4950a11c6346c5fa1b3a61eff52c076603b1c4d005406cfede.exe
    "C:\Users\Admin\AppData\Local\Temp\1a3642fa7da48a4950a11c6346c5fa1b3a61eff52c076603b1c4d005406cfede.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Windows\SysWOW64\cscript.exe
      "cscript.exe" s1.vbs //e:vbscript //NOLOGO
      2⤵
      • Blocklisted process makes network request
      • Modifies system certificate store
      PID:1744
    • C:\Users\Admin\AppData\Local\Temp\sib7419.tmp\1\drop_9.exe
      "C:\Users\Admin\AppData\Local\Temp\sib7419.tmp\1\drop_9.exe" /s
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      PID:1208

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/748-12-0x000000000E6D0000-0x000000000E6D1000-memory.dmp

    Filesize

    4KB

  • memory/748-19-0x000000000E5C3000-0x000000000E5C4000-memory.dmp

    Filesize

    4KB

  • memory/748-21-0x000000000E5C5000-0x000000000E5C7000-memory.dmp

    Filesize

    8KB

  • memory/748-18-0x000000000E5C1000-0x000000000E5C2000-memory.dmp

    Filesize

    4KB

  • memory/748-17-0x000000000E5C0000-0x000000000E5C1000-memory.dmp

    Filesize

    4KB

  • memory/748-20-0x000000000E5C4000-0x000000000E5C5000-memory.dmp

    Filesize

    4KB

  • memory/748-4-0x0000000074050000-0x000000007473E000-memory.dmp

    Filesize

    6.9MB

  • memory/748-9-0x0000000010E50000-0x0000000010E51000-memory.dmp

    Filesize

    4KB

  • memory/748-7-0x000000000E680000-0x000000000E681000-memory.dmp

    Filesize

    4KB

  • memory/748-2-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

    Filesize

    8KB

  • memory/1068-22-0x000007FEF6400000-0x000007FEF667A000-memory.dmp

    Filesize

    2.5MB

  • memory/1208-50-0x00000000027F0000-0x00000000027F1000-memory.dmp

    Filesize

    4KB

  • memory/1208-40-0x0000000002A70000-0x0000000002A71000-memory.dmp

    Filesize

    4KB

  • memory/1208-32-0x0000000004BD0000-0x0000000004BE1000-memory.dmp

    Filesize

    68KB

  • memory/1208-52-0x00000000024E0000-0x00000000024E1000-memory.dmp

    Filesize

    4KB

  • memory/1208-33-0x0000000004FE0000-0x0000000004FF1000-memory.dmp

    Filesize

    68KB

  • memory/1208-34-0x0000000002620000-0x0000000002621000-memory.dmp

    Filesize

    4KB

  • memory/1208-35-0x0000000002610000-0x0000000002611000-memory.dmp

    Filesize

    4KB

  • memory/1208-37-0x0000000002A80000-0x0000000002A81000-memory.dmp

    Filesize

    4KB

  • memory/1208-36-0x0000000002810000-0x0000000002811000-memory.dmp

    Filesize

    4KB

  • memory/1208-38-0x0000000002790000-0x0000000002791000-memory.dmp

    Filesize

    4KB

  • memory/1208-39-0x0000000002410000-0x0000000002411000-memory.dmp

    Filesize

    4KB

  • memory/1208-41-0x0000000002B90000-0x0000000002B91000-memory.dmp

    Filesize

    4KB

  • memory/1208-42-0x00000000027A0000-0x00000000027A1000-memory.dmp

    Filesize

    4KB

  • memory/1208-43-0x0000000002670000-0x0000000002671000-memory.dmp

    Filesize

    4KB

  • memory/1208-44-0x0000000000850000-0x0000000000851000-memory.dmp

    Filesize

    4KB

  • memory/1208-45-0x0000000000830000-0x0000000000831000-memory.dmp

    Filesize

    4KB

  • memory/1208-46-0x0000000002BA0000-0x0000000002BA1000-memory.dmp

    Filesize

    4KB

  • memory/1208-47-0x0000000002BB0000-0x0000000002BB1000-memory.dmp

    Filesize

    4KB

  • memory/1208-48-0x0000000002680000-0x0000000002681000-memory.dmp

    Filesize

    4KB

  • memory/1208-49-0x0000000002BD0000-0x0000000002BD1000-memory.dmp

    Filesize

    4KB

  • memory/1208-51-0x0000000002270000-0x0000000002271000-memory.dmp

    Filesize

    4KB

  • memory/1744-23-0x0000000002790000-0x0000000002794000-memory.dmp

    Filesize

    16KB