Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/05/2026, 05:52

General

  • Target
    backup.exe
  • Size 3.1MB
  • Sample260503-gkp7tab151
  • SHA256 11d1beff4e8cdf50f73298ba1e8cc5127994d2b6bd396196e1f4231aebb66e6c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • xoilac

C2
  • aidas.us:443

  • backup.aidas.us:443

  • trojan.aidas.us:443

  • ransom.aidas.us:443

  • phisher.aidas.us:443

  • malicious.aidas.us:443

Mutex
  • b074bb76-509d-4f22-9881-b2e406eacc36

Attributes
  • encryption_key

    B7E4985BC6F561AFD5FC99CACB2E00523B40A73D

  • install_name

    molliza.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    malware

  • subdirectory

    malware

Signatures

  • Family: Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 8 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 8 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\backup.exe
    "C:\Users\Admin\AppData\Local\Temp\backup.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:988
    • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
      "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4324
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3676
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\kolBXg4Ni31F.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2976
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:1620
          • C:\Windows\system32\PING.EXE
            ping -n 10 localhost
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:464
          • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
            "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4832
            • C:\Windows\SYSTEM32\schtasks.exe
              "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2784
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\zicCNsTrbHuZ.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4484
              • C:\Windows\system32\chcp.com
                chcp 65001
                6⤵
                  PID:780
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2512
                • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                  "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                  6⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:4744
                  • C:\Windows\SYSTEM32\schtasks.exe
                    "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                    7⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:436
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ZeJi5GBqnyAw.bat" "
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3968
                    • C:\Windows\system32\chcp.com
                      chcp 65001
                      8⤵
                        PID:2460
                      • C:\Windows\system32\PING.EXE
                        ping -n 10 localhost
                        8⤵
                        • System Network Configuration Discovery: Internet Connection Discovery
                        • Runs ping.exe
                        PID:4936
                      • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                        "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                        8⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        PID:2848
                        • C:\Windows\SYSTEM32\schtasks.exe
                          "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                          9⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:2224
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Dvmk8Ux5927g.bat" "
                          9⤵
                          • Suspicious use of WriteProcessMemory
                          PID:4540
                          • C:\Windows\system32\chcp.com
                            chcp 65001
                            10⤵
                              PID:3076
                            • C:\Windows\system32\PING.EXE
                              ping -n 10 localhost
                              10⤵
                              • System Network Configuration Discovery: Internet Connection Discovery
                              • Runs ping.exe
                              PID:2156
                            • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                              "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                              10⤵
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:3712
                              • C:\Windows\SYSTEM32\schtasks.exe
                                "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                                11⤵
                                • Scheduled Task/Job: Scheduled Task
                                PID:2912
                              • C:\Windows\system32\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FHEDvjCo4UXw.bat" "
                                11⤵
                                • Suspicious use of WriteProcessMemory
                                PID:4012
                                • C:\Windows\system32\chcp.com
                                  chcp 65001
                                  12⤵
                                    PID:1072
                                  • C:\Windows\system32\PING.EXE
                                    ping -n 10 localhost
                                    12⤵
                                    • System Network Configuration Discovery: Internet Connection Discovery
                                    • Runs ping.exe
                                    PID:3268
                                  • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                                    "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                                    12⤵
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of WriteProcessMemory
                                    PID:4020
                                    • C:\Windows\SYSTEM32\schtasks.exe
                                      "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                                      13⤵
                                      • Scheduled Task/Job: Scheduled Task
                                      PID:4344
                                    • C:\Windows\system32\cmd.exe
                                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\voIFRnD0C4ef.bat" "
                                      13⤵
                                      • Suspicious use of WriteProcessMemory
                                      PID:3528
                                      • C:\Windows\system32\chcp.com
                                        chcp 65001
                                        14⤵
                                          PID:4908
                                        • C:\Windows\system32\PING.EXE
                                          ping -n 10 localhost
                                          14⤵
                                          • System Network Configuration Discovery: Internet Connection Discovery
                                          • Runs ping.exe
                                          PID:2440
                                        • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                                          "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                                          14⤵
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          • Suspicious use of WriteProcessMemory
                                          PID:4496
                                          • C:\Windows\SYSTEM32\schtasks.exe
                                            "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                                            15⤵
                                            • Scheduled Task/Job: Scheduled Task
                                            PID:3404
                                          • C:\Windows\system32\cmd.exe
                                            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hzQoAKk7WJuV.bat" "
                                            15⤵
                                            • Suspicious use of WriteProcessMemory
                                            PID:3692
                                            • C:\Windows\system32\chcp.com
                                              chcp 65001
                                              16⤵
                                                PID:3776
                                              • C:\Windows\system32\PING.EXE
                                                ping -n 10 localhost
                                                16⤵
                                                • System Network Configuration Discovery: Internet Connection Discovery
                                                • Runs ping.exe
                                                PID:956
                                              • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                                                "C:\Users\Admin\AppData\Roaming\malware\molliza.exe"
                                                16⤵
                                                • Executes dropped EXE
                                                • Suspicious use of AdjustPrivilegeToken
                                                • Suspicious use of WriteProcessMemory
                                                PID:4600
                                                • C:\Windows\SYSTEM32\schtasks.exe
                                                  "schtasks" /create /tn "malware" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\malware\molliza.exe" /rl HIGHEST /f
                                                  17⤵
                                                  • Scheduled Task/Job: Scheduled Task
                                                  PID:3204
                                                • C:\Windows\system32\cmd.exe
                                                  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\G0lg5rb5U8xH.bat" "
                                                  17⤵
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:4276
                                                  • C:\Windows\system32\chcp.com
                                                    chcp 65001
                                                    18⤵
                                                      PID:3856
                                                    • C:\Windows\system32\PING.EXE
                                                      ping -n 10 localhost
                                                      18⤵
                                                      • System Network Configuration Discovery: Internet Connection Discovery
                                                      • Runs ping.exe
                                                      PID:4120
                  • C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                    C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                    1⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3012

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        molliza.exe.log

                        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\molliza.exe.log
                        • Size 1KB
                        • SHA256 5d8af3c7519874ed42a0d74ee559ae30d9cc6930aef213079347e2b47092c210
                        • MD5 SHA1 SHA512 TLSH

                        Dvmk8Ux5927g.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\Dvmk8Ux5927g.bat
                        • Size 209B
                        • SHA256 382f3dbee8f855b706178de3eceab156fff7c1c51a409da10608b201ee0227e1
                        • MD5 SHA1 SHA512 TLSH

                        FHEDvjCo4UXw.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\FHEDvjCo4UXw.bat
                        • Size 209B
                        • SHA256 4e6d624bb4c0efaa460e4af73181222043e186b83bbcda819bdcecaf655b1ee1
                        • MD5 SHA1 SHA512 TLSH

                        G0lg5rb5U8xH.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\G0lg5rb5U8xH.bat
                        • Size 209B
                        • SHA256 da2ad347473402038e84807d58ba492fbdb1c5e1b3f439573e044487bb2e093a
                        • MD5 SHA1 SHA512 TLSH

                        ZeJi5GBqnyAw.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\ZeJi5GBqnyAw.bat
                        • Size 209B
                        • SHA256 68ddb37c59c6eb7a5279dda8f376f18416102285ed128ce1baad5d7c6472881b
                        • MD5 SHA1 SHA512 TLSH

                        hzQoAKk7WJuV.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\hzQoAKk7WJuV.bat
                        • Size 209B
                        • SHA256 db0b673c80eddda4e2d119a2597488cef13975bd1dbca292fcbcceda94b10334
                        • MD5 SHA1 SHA512 TLSH

                        kolBXg4Ni31F.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\kolBXg4Ni31F.bat
                        • Size 209B
                        • SHA256 1b34ac0a5c3c4a5b83bbfbc83d5f7f56658e63c1ae50ee9a35563573b1a65f4e
                        • MD5 SHA1 SHA512 TLSH

                        voIFRnD0C4ef.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\voIFRnD0C4ef.bat
                        • Size 209B
                        • SHA256 32b293a55dae112c23cf6064a84b7c8bf7c15198e78b5cd49119b686d4187516
                        • MD5 SHA1 SHA512 TLSH

                        zicCNsTrbHuZ.bat

                        • Path C:\Users\Admin\AppData\Local\Temp\zicCNsTrbHuZ.bat
                        • Size 209B
                        • SHA256 9e3f0eeb97cbde842e26b8c41384c3efb0bf12ba99cd5349a5f7f489a2045572
                        • MD5 SHA1 SHA512 TLSH

                        molliza.exe

                        • Path C:\Users\Admin\AppData\Roaming\malware\molliza.exe
                        • Size 3.1MB
                        • SHA256 11d1beff4e8cdf50f73298ba1e8cc5127994d2b6bd396196e1f4231aebb66e6c
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        memory/2848-45-0x0000000000F10000-0x0000000000F1C000-memory.dmp

                        memory/2848-47-0x00000000028B0000-0x00000000028B9000-memory.dmp

                        memory/2848-46-0x0000000002880000-0x0000000002892000-memory.dmp

                        memory/3012-14-0x0000000002930000-0x0000000002942000-memory.dmp

                        memory/3012-13-0x0000000001110000-0x000000000111C000-memory.dmp

                        memory/3712-55-0x000000001C3C0000-0x000000001C3C9000-memory.dmp

                        memory/3712-54-0x000000001B870000-0x000000001B882000-memory.dmp

                        memory/3712-53-0x0000000001510000-0x000000000151C000-memory.dmp

                        memory/3912-9-0x00000000033F0000-0x0000000003402000-memory.dmp

                        memory/3912-0-0x0000000000F60000-0x0000000001284000-memory.dmp

                        memory/3912-8-0x0000000003360000-0x000000000336C000-memory.dmp

                        memory/3912-1-0x000000001BFA0000-0x000000001BFB0000-memory.dmp

                        memory/4020-60-0x000000001BCA0000-0x000000001BCA9000-memory.dmp

                        memory/4020-58-0x000000001BA90000-0x000000001BA9C000-memory.dmp

                        memory/4020-67-0x000000001BA90000-0x000000001BA9C000-memory.dmp

                        memory/4020-69-0x000000001BCA0000-0x000000001BCA9000-memory.dmp

                        memory/4020-59-0x000000001BC50000-0x000000001BC62000-memory.dmp

                        memory/4324-22-0x000000001B7E0000-0x000000001B7F2000-memory.dmp

                        memory/4324-15-0x000000001C2B0000-0x000000001C300000-memory.dmp

                        memory/4324-10-0x000000001B800000-0x000000001B810000-memory.dmp

                        memory/4324-21-0x00000000013A0000-0x00000000013AC000-memory.dmp

                        memory/4324-16-0x000000001C3C0000-0x000000001C472000-memory.dmp

                        memory/4324-23-0x000000001B840000-0x000000001B849000-memory.dmp

                        memory/4496-75-0x0000000002570000-0x000000000257C000-memory.dmp

                        memory/4496-77-0x000000001B060000-0x000000001B069000-memory.dmp

                        memory/4496-76-0x0000000002740000-0x0000000002752000-memory.dmp

                        memory/4600-82-0x0000000001BC0000-0x0000000001BC9000-memory.dmp

                        memory/4600-80-0x0000000001990000-0x000000000199C000-memory.dmp

                        memory/4600-81-0x0000000001B10000-0x0000000001B22000-memory.dmp

                        memory/4600-91-0x0000000001BC0000-0x0000000001BC9000-memory.dmp

                        memory/4600-89-0x0000000001990000-0x000000000199C000-memory.dmp

                        memory/4744-38-0x0000000001820000-0x0000000001832000-memory.dmp

                        memory/4744-39-0x0000000003150000-0x0000000003159000-memory.dmp

                        memory/4744-37-0x0000000001790000-0x000000000179C000-memory.dmp

                        memory/4832-31-0x000000001B7D0000-0x000000001B7D9000-memory.dmp

                        memory/4832-29-0x0000000002D10000-0x0000000002D1C000-memory.dmp

                        memory/4832-30-0x000000001BEE0000-0x000000001BEF2000-memory.dmp