Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/01/2024, 03:55

General

  • Target
    ac15ae1e49f4272e8d38b5fd5573ce35.exe
  • Size 81KB
  • Sample240130-egsgnagab2
  • SHA256 c886e938dd26ca17bd29feea36d4c487483bb05d86b3c382e045b88925b27149
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealerium

C2
  • https://discordapp.com/api/webhooks/1197850806213431377/-zU9uA2NeaYEk4-ozdhgmNljI6NS_w_qcT_cbtxYxZdkUD3JeaKChZp4GXdod-MX3D1Q

Signatures

  • Detect ZGRat V1 34 IoCs
  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 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 3 IoCs
  • 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 SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
    "C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
      C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
      2⤵
        PID:4384
      • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
        C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
        2⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:1824
        • C:\Users\Admin\AppData\Local\Temp\build.exe
          "C:\Users\Admin\AppData\Local\Temp\build.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:4832
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1040
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:1624
              • C:\Windows\SysWOW64\netsh.exe
                netsh wlan show profile
                5⤵
                  PID:3524
                • C:\Windows\SysWOW64\findstr.exe
                  findstr All
                  5⤵
                    PID:4100
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 2924
                  4⤵
                  • Program crash
                  PID:3488
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4884
              • C:\Users\Admin\AppData\Local\Temp\@dr@[email protected]
                "C:\Users\Admin\AppData\Local\Temp\@dr@[email protected]"
                3⤵
                • Checks computer location settings
                • Drops startup file
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2936
                • C:\Users\Admin\AppData\Local\Temp\CamSnap.exe
                  "C:\Users\Admin\AppData\Local\Temp\CamSnap.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:4624
            • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
              C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
              2⤵
                PID:4756
              • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                2⤵
                  PID:3928
                • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                  C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                  2⤵
                    PID:4744
                  • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                    C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                    2⤵
                      PID:4060
                    • C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                      C:\Users\Admin\AppData\Local\Temp\ac15ae1e49f4272e8d38b5fd5573ce35.exe
                      2⤵
                        PID:1552
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4832 -ip 4832
                      1⤵
                        PID:3144
                      • C:\Windows\system32\msiexec.exe
                        C:\Windows\system32\msiexec.exe /V
                        1⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2180
                      • C:\Windows\SysWOW64\chcp.com
                        chcp 65001
                        1⤵
                          PID:3256
                        • C:\Windows\SysWOW64\netsh.exe
                          netsh wlan show networks mode=bssid
                          1⤵
                            PID:3216

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                ac15ae1e49f4272e8d38b5fd5573ce35.exe.log

                                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\ac15ae1e49f4272e8d38b5fd5573ce35.exe.log
                                • Size 1KB
                                • SHA256 f1ed6ff1cd3df219061e32df1c75d6f48de6484cf50e5ea7d86cd8bcfcb93256
                                • MD5 SHA1 SHA512
                                • Path C:\Users\Admin\AppData\Local\Temp\@dr@[email protected]
                                • Size 92KB
                                • SHA256 0729cb927eb057acf0cfb1392a7d6ea3904efca670e2b15fc0358dc604b296a9
                                • MD5 SHA1 SHA512 SSDEEP
                                • Path C:\Users\Admin\AppData\Local\Temp\@dr@[email protected]
                                • Size 47KB
                                • SHA256 9b6213486ab54b419a2bba93b40fb081c481cd0a5aba53f3517338958a4a22d9
                                • MD5 SHA1 SHA512 SSDEEP

                                CamSnap.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\CamSnap.exe
                                • Size 78KB
                                • SHA256 4c8a524e7fa23252edaadca238b377a438a6240a45540b664662f5e58f539c6e
                                • MD5 SHA1 SHA512 SSDEEP

                                CamSnap.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\CamSnap.exe
                                • Size 92KB
                                • SHA256 97a03af43afdff2cb79e15f7de780684ded4bd31f87f5cdac821844ad99dab0d
                                • MD5 SHA1 SHA512 SSDEEP

                                CamSnap.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\CamSnap.exe
                                • Size 94KB
                                • SHA256 09d95d73ac6828138201142cc519ac46a0456db2ea71240c3fa51d569b0242aa
                                • MD5 SHA1 SHA512 SSDEEP

                                Autofills.txt

                                • Path C:\Users\Admin\AppData\Local\Temp\Data\Autofills.txt
                                • Size 234B
                                • SHA256 5bc3a7ced261f235f4a30797ad96f803c9e022a95ad6bc7fedc06d0fd2a0abeb
                                • MD5 SHA1 SHA512

                                Histories.txt

                                • Path C:\Users\Admin\AppData\Local\Temp\Data\Histories.txt
                                • Size 234B
                                • SHA256 eaff9c24df526e9c884832130bf6de9182fd96f3dcdba33e8e5e7a4ed37f1bbe
                                • MD5 SHA1 SHA512

                                Passwords.txt

                                • Path C:\Users\Admin\AppData\Local\Temp\Data\Passwords.txt
                                • Size 234B
                                • SHA256 8a947e0921f9cfada15c19a72f0ff31b38ad4602106c6ee95685d61c223c9a35
                                • MD5 SHA1 SHA512

                                Stealerium-Latest.log

                                • Path C:\Users\Admin\AppData\Local\Temp\Stealerium-Latest.log
                                • Size 320B
                                • SHA256 8440b832e76e67a1efa1e9cb714f4f9a44e8085ab91de1e42b584ab54d0ac775
                                • MD5 SHA1 SHA512

                                build.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\build.exe
                                • Size 45KB
                                • SHA256 363917fd8f2abd3877c6baac7a8572550519258e4bcd219cdd28a36837245eec
                                • MD5 SHA1 SHA512 SSDEEP

                                build.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\build.exe
                                • Size 1KB
                                • SHA256 5c0dabbdfabeefebf94162eb4759280feccbe166668a35bf16393f251eb28bde
                                • MD5 SHA1 SHA512

                                Bookmarks.txt

                                • Path C:\Users\Admin\AppData\Local\a656771e61d467c3c5fb7c927bb190f1\Admin@FMAEQIOU_en-US\Browsers\Firefox\Bookmarks.txt
                                • Size 105B
                                • SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
                                • MD5 SHA1 SHA512

                                memory/1824-984-0x0000000075190000-0x0000000075940000-memory.dmp

                                memory/1824-950-0x0000000005960000-0x000000000596A000-memory.dmp

                                memory/1824-949-0x0000000005A40000-0x0000000005A50000-memory.dmp

                                memory/1824-948-0x0000000005880000-0x0000000005912000-memory.dmp

                                memory/1824-947-0x0000000000400000-0x0000000000C0A000-memory.dmp

                                memory/1824-946-0x0000000075190000-0x0000000075940000-memory.dmp

                                memory/2888-940-0x00000000072D0000-0x000000000731C000-memory.dmp

                                memory/2888-19-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-35-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-37-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-39-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-41-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-43-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-45-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-47-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-49-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-51-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-53-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-55-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-57-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-59-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-61-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-63-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-65-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-67-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-69-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-938-0x0000000003040000-0x0000000003041000-memory.dmp

                                memory/2888-0-0x0000000000D80000-0x0000000000D9A000-memory.dmp

                                memory/2888-939-0x0000000009110000-0x0000000009612000-memory.dmp

                                memory/2888-941-0x0000000009BC0000-0x000000000A164000-memory.dmp

                                memory/2888-31-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-29-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-25-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-945-0x0000000075190000-0x0000000075940000-memory.dmp

                                memory/2888-27-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-23-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-21-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-33-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-17-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-1-0x0000000075190000-0x0000000075940000-memory.dmp

                                memory/2888-15-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-13-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-2-0x0000000005880000-0x0000000005890000-memory.dmp

                                memory/2888-11-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-3-0x0000000005710000-0x0000000005716000-memory.dmp

                                memory/2888-4-0x0000000005730000-0x0000000005736000-memory.dmp

                                memory/2888-5-0x0000000008710000-0x0000000008C7A000-memory.dmp

                                memory/2888-6-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-9-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2888-7-0x0000000008710000-0x0000000008C74000-memory.dmp

                                memory/2936-985-0x000001E574430000-0x000001E574440000-memory.dmp

                                memory/2936-971-0x000001E571BA0000-0x000001E571D18000-memory.dmp

                                memory/2936-1002-0x000001E5765E0000-0x000001E576630000-memory.dmp

                                memory/2936-981-0x00007FFF430E0000-0x00007FFF43BA1000-memory.dmp

                                memory/2936-1046-0x00007FFF430E0000-0x00007FFF43BA1000-memory.dmp

                                memory/4624-999-0x00007FFF430E0000-0x00007FFF43BA1000-memory.dmp

                                memory/4624-998-0x000001CB5E550000-0x000001CB5E56E000-memory.dmp

                                memory/4624-1001-0x00007FFF430E0000-0x00007FFF43BA1000-memory.dmp

                                memory/4832-982-0x0000000075190000-0x0000000075940000-memory.dmp

                                memory/4832-983-0x0000000005090000-0x00000000050F6000-memory.dmp

                                memory/4832-1049-0x00000000057D0000-0x00000000057D8000-memory.dmp

                                memory/4832-1048-0x00000000057A0000-0x00000000057C6000-memory.dmp

                                memory/4832-1047-0x0000000005710000-0x00000000057A2000-memory.dmp

                                memory/4832-1051-0x0000000006600000-0x0000000006608000-memory.dmp

                                memory/4832-1052-0x0000000006620000-0x000000000663E000-memory.dmp

                                memory/4832-1050-0x00000000065F0000-0x00000000065FA000-memory.dmp

                                memory/4832-980-0x00000000006A0000-0x0000000000832000-memory.dmp

                                memory/4832-1000-0x0000000005000000-0x0000000005010000-memory.dmp

                                memory/4832-1119-0x0000000075190000-0x0000000075940000-memory.dmp