Analysis

  • max time kernel
    91s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2023, 15:51

General

  • Target
    80fe50fa10ae942fa2ab852d998799f3.exe
  • Size 279KB
  • Sample230201-tagtxaae24
  • SHA256 aa64d1ced4e8d63e410a37fae592af152e222ee8a10bce0a364545bae3cac365
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect rhadamanthys stealer shellcode 2 IoCs
  • Rhadamanthys

    Rhadamanthys is an info stealer written in C++ first seen in August 2022.

  • Blocklisted process makes network request 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Program crash 2 IoCs
  • 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 WriteProcessMemory 2 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\80fe50fa10ae942fa2ab852d998799f3.exe
    "C:\Users\Admin\AppData\Local\Temp\80fe50fa10ae942fa2ab852d998799f3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4884
    • C:\Windows\system32\rundll32.exe
      "C:\Users\Admin\AppData\Roaming\nsis_unse56d17e.dll",PrintUIEntry |5CQkOhmAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAKVkHwBs8|AtBQPz8Dj|AHkAYgBSAE7rAGNDAFQ7AHoANL8AdQBVAFctAln|SIPsKOgEAgD|AEiDxCjDzMz|zEyJRCQYSIn|VCQQSIlMJAj+XQFIi0QkMEiJ2wQkgQE4SG8ACEhvx0QkEC0B6w6BAV8QSIPAAY8BEIEBt0BIOZYAcyWfA4v|DCRIA8hIi8HXSItMqwFUewAD0f9Ii8qKCYgI6|3BZgVlSIsEJWD+8|AzyUiLUBhI|zvRdDZIg8Ig|0iLAkg7wnQq|2aDeEgYdRpM|4tAUGZBgzhru3QHERFLdQgREHj|EC50BUiLAOuv1UiLSP0AwWoAQP9TVVZXQVRBVe9BVkFXXQFmgTn|TVpNi|hMi|K|SIvZD4X88|BM|2NJPEGBPAlQv0UAAA+F6vPwQe+LhAmI8|CFwEi|jTwBD4TWahGDd7wJjC0BD4TH8|D|RItnIESLXxz|i3ckRItPGEz|A+FMA9lIA|H|M8lFhckPhKT+8|BNi8RBixBF|zPSSAPTigKE|8B0HUHByg0Pe77A+gABRAPQvxH|dexBgfqq|A3|fHQOg8EBSYP|wARBO8lzaev|xovBD7cMTkX|iyyLTAPrdFj7M+2qEHRRQYsU|sEA0zPJigJMi9|C6w|BycgRA8je5RABQYoA1RDtM3|AM|ZBOwy24BD+pgCDxgGD+Ahy|+7rCkiLy0H|f9VJiQT3g8XkEH|EBDtvGHKvZgH|QV9BXkFdQVzvX15dWzMXSIHs+2ABZACL6ehm|v|||0iFwA+EmNZ1IEyNrwGLKxDIM|f|6Jt9II1fBEz|jUVGM9KLy||3VCRogCBMi+AP64RrdSBFqBAzwIt905EgSIl8JCCmIP1wgCBIi|APhEv8dSCmIFBIjVYIRH+NR0BIjYwkhRG|SIvY6Hz9fiCNq1ZI3iAQ4iHM8|Do|WfvIESLBo1XCPRBIKYgWMohiYQkgNqHEt7z8IsO2iBYiWOMJHERBzCRIOgx7yD7i5wtMkyLXTpI74P7bEiKIDBMib9kJDhMi6QaMky7iVyEAYQk3IcRhu2SjRGNR0swjCTwfvPwSYvU6On8BTC7ipx4MkiNhHgyQf+A8yGNT2xEMP0YpAKD6QF184H9vHgyIVJleHVN74uEJPQiMZQk+P41AcJIO9hyOIP|+mx2M0SNSUCe+gCUQbgAmACmIECeyiL4dBlEtjDAMUnvjVQkbJEgSYPod2zoa4IwSIvOpiD|eEiF|3QSi1XzQkyOMBsxSI1MJD9A|9dIgcR0IWEkAC0ILQE=
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • outlook_office_path
      • outlook_win_path
      PID:2916
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2916 -s 304
        3⤵
        • Program crash
        PID:1780
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 696
      2⤵
      • Program crash
      PID:1924
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4884 -ip 4884
    1⤵
      PID:1880
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 424 -p 2916 -ip 2916
      1⤵
        PID:3392

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            nsis_unse56d17e.dll

            • Path C:\Users\Admin\AppData\Roaming\nsis_unse56d17e.dll
            • Size 49KB
            • SHA256 438c088568093ad767802ba5e132efbd4e643ddf62e4996565c3b46719e3e576
            • MD5 SHA1 SHA512 SSDEEP

            nsis_unse56d17e.dll

            • Path C:\Users\Admin\AppData\Roaming\nsis_unse56d17e.dll
            • Size 49KB
            • SHA256 438c088568093ad767802ba5e132efbd4e643ddf62e4996565c3b46719e3e576
            • MD5 SHA1 SHA512 SSDEEP

            memory/2916-140-0x000001F5295D0000-0x000001F5295D7000-memory.dmp

            memory/2916-147-0x00007FFEA64A0000-0x00007FFEA64B2000-memory.dmp

            memory/2916-146-0x00007FF404AB0000-0x00007FF404BAA000-memory.dmp

            memory/2916-145-0x00007FF404AB0000-0x00007FF404BAA000-memory.dmp

            memory/2916-141-0x00007FF404AB0000-0x00007FF404BAA000-memory.dmp

            memory/4884-136-0x0000000002C7D000-0x0000000002C8E000-memory.dmp

            memory/4884-132-0x0000000002C59000-0x0000000002C79000-memory.dmp

            memory/4884-142-0x0000000002C59000-0x0000000002C79000-memory.dmp

            memory/4884-143-0x00000000049A0000-0x00000000049BD000-memory.dmp

            memory/4884-144-0x0000000000400000-0x0000000002BAF000-memory.dmp

            memory/4884-135-0x00000000049A0000-0x00000000049BD000-memory.dmp

            memory/4884-134-0x0000000000400000-0x0000000002BAF000-memory.dmp

            memory/4884-133-0x0000000004900000-0x0000000004925000-memory.dmp