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Analysis

  • max time kernel
    74s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 07:20

General

  • Target

    a270a038d6a70f26d2f258a1ab1e051f5770e4616b0762f743dd8b5bf867695b.exe

  • Size

    512KB

  • MD5

    8e7b7299735812a199f9366d9d0ee57d

  • SHA1

    962e85ec26cba7bed4e6e23c2e218bc3c0a1b0d7

  • SHA256

    a270a038d6a70f26d2f258a1ab1e051f5770e4616b0762f743dd8b5bf867695b

  • SHA512

    4e21a4602cb218c6a7712bac313205a6abfdc49093b56b7040afe657a684674d7704fd11fd033be4334e028a19cf3ab596de2ae42b7f27e94758b2494b2dc5bf

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4J:0+h9OY70z+warul3E4J

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a270a038d6a70f26d2f258a1ab1e051f5770e4616b0762f743dd8b5bf867695b.exe
    "C:\Users\Admin\AppData\Local\Temp\a270a038d6a70f26d2f258a1ab1e051f5770e4616b0762f743dd8b5bf867695b.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Users\Admin\AppData\Local\Temp\n8915\s8915.exe
      "C:\Users\Admin\AppData\Local\Temp\n8915\s8915.exe" 59afd9e125dace54e5003024ts+kE5Oum2ub4AiX/M8J9+ek7cvE/OwL2wNkwFCY9HuRNOe0fqsl+TZrEd2UviIj4KjADtb1Mf7NDEmY24Wg9P499Jwd86bh1E8mAnJeqwy/fEJ8aRZ2jODxCTSP3oU4FkFLyCuZ7BNT2kTvMkMTDzjB /v "C:\Users\Admin\AppData\Local\Temp\a270a038d6a70f26d2f258a1ab1e051f5770e4616b0762f743dd8b5bf867695b.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n8915\s8915.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • C:\Users\Admin\AppData\Local\Temp\n8915\s8915.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • memory/4708-135-0x00007FFDB4E20000-0x00007FFDB5856000-memory.dmp

    Filesize

    10.2MB

  • memory/4708-136-0x000000000183A000-0x000000000183F000-memory.dmp

    Filesize

    20KB

  • memory/4708-137-0x000000000183A000-0x000000000183F000-memory.dmp

    Filesize

    20KB