Resubmissions

13-08-2024 12:55

240813-p5s37svarb 9

03-08-2024 05:56

240803-gng1lsvfnn 9

29-07-2024 17:59

240729-wkpzdawhlc 9

29-07-2024 13:14

240729-qg3heazdpj 9

Analysis

  • max time kernel
    147s
  • max time network
    135s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240709-en
  • resource tags

    arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29-07-2024 17:59

General

  • Target

    eaa0e773eb593b0046452f420b6db8a47178c09e6db0fa68f6a2d42c3f48e3bc.exe

  • Size

    162KB

  • MD5

    7e851829ee37bc0cf65a268d1d1baa7a

  • SHA1

    672553c79db2a3859a8ea216804d4ff8d2ded538

  • SHA256

    eaa0e773eb593b0046452f420b6db8a47178c09e6db0fa68f6a2d42c3f48e3bc

  • SHA512

    856c6d27669b3123064d85adbc119414f5418f80bbbc9f85f4575df97cf34d1f4ab96fab5442a337ac6a90c076ba5af835f5286cb403acfb3a1e4fc5d0834ebd

  • SSDEEP

    3072:rjvNTtA6pzarOLgSua/iw6kzg3qe1PTjrnFFMVUT6tSTC6D1vtPR1DO66ddJpW3h:r72qe1PTjrnf/KMR1j6df01fiuAP3xFm

Malware Config

Signatures

  • Renames multiple (292) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 3 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eaa0e773eb593b0046452f420b6db8a47178c09e6db0fa68f6a2d42c3f48e3bc.exe
    "C:\Users\Admin\AppData\Local\Temp\eaa0e773eb593b0046452f420b6db8a47178c09e6db0fa68f6a2d42c3f48e3bc.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3204
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:5820
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:6040
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{E7ADF9C0-1E87-40D2-8E1D-60F0B2AA9C1C}.xps" 133667495922520000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:5136

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials from Password Stores

    1
    T1555

    Windows Credential Manager

    1
    T1555.004

    Discovery

    Query Registry

    3
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    4
    T1082

    System Location Discovery

    1
    T1614

    System Language Discovery

    1
    T1614.001

    Impact

    Defacement

    1
    T1491

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Microsoft\Office\ClickToRunPackageLocker
      MD5

      d41d8cd98f00b204e9800998ecf8427e

      SHA1

      da39a3ee5e6b4b0d3255bfef95601890afd80709

      SHA256

      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

      SHA512

      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

    • C:\ProgramData\README.txt
      Filesize

      423B

      MD5

      7ff94943cdf15452a094e7a8587755b6

      SHA1

      663d82d423fd075b4c87e6428e9c2556c474b88e

      SHA256

      6497c4ac3c3c1dc3fa0405571007a21ae4cecb7cc7cc170c4ad17f683a6118a5

      SHA512

      da91f22c6c9fd4f25a5bc6be74c2dbf1b4d886af97d6dba49de12bef6f9d511b7cd834bae1851a5b4057b665353b2d6b802c5c45076ca5af94827db2ef2028ef

    • C:\Users\Admin\AppData\Local\Temp\{E33EFF07-11A3-41BD-B384-34C2A5707EAE}
      Filesize

      4KB

      MD5

      96ad1e86148c301b0b60caca030f33b6

      SHA1

      1d9e7ea2fe87481c7e095a5b2172ab1e99108148

      SHA256

      9a4bc38df52d3d404c9427199c904deb1ee0a5f98232388fab77e9c8b901d132

      SHA512

      e36bdab13828b0b0caa542e035476f01ce82c02f50b138a8cc3778b1e068978d3e6f0c4898ea1c341e165f2589d0cafd7e34321630e3b929f50cd22aabd5dc2c

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
      Filesize

      4KB

      MD5

      63c79db6b84aeae3e161f8ed9e6b9914

      SHA1

      c22ed27bd492263e6d95a02818d052b66d83815b

      SHA256

      a9a036593cebea2bf7f09466686e4549f5d8323cd0472002c1402d8f9ff3bb0e

      SHA512

      bdf91740d54f561318854e07afb56af2b41c59f362cae7186c87b85c47a1ea213d54a1bf2c56dc1a7274f22734c33c74b0e684a16d92b38987f295df09b77621

    • memory/5136-1133-0x00007FFBB18D0000-0x00007FFBB18E0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1135-0x00007FFBB18D0000-0x00007FFBB18E0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1134-0x00007FFBB18D0000-0x00007FFBB18E0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1136-0x00007FFBB18D0000-0x00007FFBB18E0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1137-0x00007FFBB18D0000-0x00007FFBB18E0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1138-0x00007FFBAEED0000-0x00007FFBAEEE0000-memory.dmp
      Filesize

      64KB

    • memory/5136-1139-0x00007FFBAEED0000-0x00007FFBAEEE0000-memory.dmp
      Filesize

      64KB