Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 10:38

General

  • Target
    file.exe
  • Size 259KB
  • Sample221205-mpdx8sbd88
  • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • amadey

Version
  • 3.50

C2
  • 31.41.244.167/v7eWcjs/index.php

Signatures

  • Amadey

    Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

  • Detect Amadey credential stealer module 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 5 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 5 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 4 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
      "C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:3936
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN gntuud.exe /TR "C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe" /F
        3⤵
        • Creates scheduled task(s)
        PID:4792
      • C:\Users\Admin\AppData\Local\Temp\1000009001\linda5.exe
        "C:\Users\Admin\AppData\Local\Temp\1000009001\linda5.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:4748
        • C:\Windows\SysWOW64\control.exe
          "C:\Windows\System32\control.exe" .\t725LbZ.A
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3584
          • C:\Windows\SysWOW64\rundll32.exe
            "C:\Windows\system32\rundll32.exe" Shell32.dll,Control_RunDLL .\t725LbZ.A
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1060
            • C:\Windows\system32\RunDll32.exe
              C:\Windows\system32\RunDll32.exe Shell32.dll,Control_RunDLL .\t725LbZ.A
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2468
              • C:\Windows\SysWOW64\rundll32.exe
                "C:\Windows\SysWOW64\rundll32.exe" "C:\Windows\SysWOW64\shell32.dll",#44 .\t725LbZ.A
                7⤵
                • Loads dropped DLL
                PID:5032
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll, Main
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • outlook_win_path
        PID:2796
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1984 -s 1136
      2⤵
      • Program crash
      PID:3504
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1984 -ip 1984
    1⤵
      PID:4812
    • C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
      C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
      1⤵
      • Executes dropped EXE
      PID:4720
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 428
        2⤵
        • Program crash
        PID:4124
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4720 -ip 4720
      1⤵
        PID:1324
      • C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
        C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
        1⤵
        • Executes dropped EXE
        PID:1516
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 420
          2⤵
          • Program crash
          PID:4592
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1516 -ip 1516
        1⤵
          PID:4240
        • C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
          C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
          1⤵
          • Executes dropped EXE
          PID:3392
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 428
            2⤵
            • Program crash
            PID:1776
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 3392 -ip 3392
          1⤵
            PID:3544

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                linda5.exe

                • Path C:\Users\Admin\AppData\Local\Temp\1000009001\linda5.exe
                • Size 1.6MB
                • SHA256 3e7c6f32bec58ba714ad1ae5e14aabf173e0530442edaa2844d3dccc2789c8e7
                • MD5 SHA1 SHA512 SSDEEP

                linda5.exe

                • Path C:\Users\Admin\AppData\Local\Temp\1000009001\linda5.exe
                • Size 1.6MB
                • SHA256 3e7c6f32bec58ba714ad1ae5e14aabf173e0530442edaa2844d3dccc2789c8e7
                • MD5 SHA1 SHA512 SSDEEP

                gntuud.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
                • Size 259KB
                • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
                • MD5 SHA1 SHA512 SSDEEP

                gntuud.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
                • Size 259KB
                • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
                • MD5 SHA1 SHA512 SSDEEP

                gntuud.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
                • Size 259KB
                • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
                • MD5 SHA1 SHA512 SSDEEP

                gntuud.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
                • Size 259KB
                • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
                • MD5 SHA1 SHA512 SSDEEP

                gntuud.exe

                • Path C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe
                • Size 259KB
                • SHA256 0e9d37bf8c274c0febc6041176c857fded714444c7f631fce548414bf81e3021
                • MD5 SHA1 SHA512 SSDEEP

                t725LbZ.A

                • Path C:\Users\Admin\AppData\Local\Temp\t725LbZ.A
                • Size 2.8MB
                • SHA256 fd3c87a09bc135e8aebc64eb5f5f26ec643f3a08f004b23bd432101c13d5e169
                • MD5 SHA1 SHA512 SSDEEP

                t725lbZ.a

                • Path C:\Users\Admin\AppData\Local\Temp\t725lbZ.a
                • Size 2.8MB
                • SHA256 fd3c87a09bc135e8aebc64eb5f5f26ec643f3a08f004b23bd432101c13d5e169
                • MD5 SHA1 SHA512 SSDEEP

                t725lbZ.a

                • Path C:\Users\Admin\AppData\Local\Temp\t725lbZ.a
                • Size 2.8MB
                • SHA256 fd3c87a09bc135e8aebc64eb5f5f26ec643f3a08f004b23bd432101c13d5e169
                • MD5 SHA1 SHA512 SSDEEP

                t725lbZ.a

                • Path C:\Users\Admin\AppData\Local\Temp\t725lbZ.a
                • Size 2.8MB
                • SHA256 fd3c87a09bc135e8aebc64eb5f5f26ec643f3a08f004b23bd432101c13d5e169
                • MD5 SHA1 SHA512 SSDEEP

                t725lbZ.a

                • Path C:\Users\Admin\AppData\Local\Temp\t725lbZ.a
                • Size 2.8MB
                • SHA256 fd3c87a09bc135e8aebc64eb5f5f26ec643f3a08f004b23bd432101c13d5e169
                • MD5 SHA1 SHA512 SSDEEP

                cred64.dll

                • Path C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll
                • Size 126KB
                • SHA256 104af593683398f0980f2c86e6513b8c1b7dededc1f924d4693ad92410d51a62
                • MD5 SHA1 SHA512 SSDEEP

                cred64.dll

                • Path C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll
                • Size 126KB
                • SHA256 104af593683398f0980f2c86e6513b8c1b7dededc1f924d4693ad92410d51a62
                • MD5 SHA1 SHA512 SSDEEP

                memory/1060-163-0x0000000003CD0000-0x0000000003DE4000-memory.dmp

                memory/1060-160-0x0000000003EF0000-0x0000000003FC9000-memory.dmp

                memory/1060-157-0x0000000003DF0000-0x0000000003EE1000-memory.dmp

                memory/1060-152-0x00000000033E0000-0x00000000036A8000-memory.dmp

                memory/1060-153-0x0000000003930000-0x0000000003BA6000-memory.dmp

                memory/1060-154-0x0000000003CD0000-0x0000000003DE4000-memory.dmp

                memory/1516-180-0x00000000005BC000-0x00000000005DB000-memory.dmp

                memory/1516-181-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/1984-144-0x0000000000829000-0x0000000000848000-memory.dmp

                memory/1984-146-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/1984-132-0x0000000000829000-0x0000000000848000-memory.dmp

                memory/1984-133-0x0000000000600000-0x000000000063E000-memory.dmp

                memory/1984-134-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/3392-184-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/3392-183-0x00000000006DB000-0x00000000006FA000-memory.dmp

                memory/3936-139-0x0000000000548000-0x0000000000567000-memory.dmp

                memory/3936-155-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/3936-141-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/3936-140-0x00000000020D0000-0x000000000210E000-memory.dmp

                memory/4720-158-0x000000000073B000-0x000000000075A000-memory.dmp

                memory/4720-159-0x0000000000400000-0x0000000000476000-memory.dmp

                memory/5032-171-0x0000000003B20000-0x0000000003C11000-memory.dmp

                memory/5032-168-0x0000000003010000-0x00000000032D8000-memory.dmp

                memory/5032-175-0x0000000003A00000-0x0000000003B14000-memory.dmp

                memory/5032-172-0x0000000003C20000-0x0000000003CF9000-memory.dmp

                memory/5032-170-0x0000000003A00000-0x0000000003B14000-memory.dmp

                memory/5032-169-0x0000000003660000-0x00000000038D6000-memory.dmp