Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 03:27

General

  • Target

    2da9543a96dc5ca68af4c2e095e21f49.exe

  • Size

    1.7MB

  • MD5

    2da9543a96dc5ca68af4c2e095e21f49

  • SHA1

    2b48017b795efe9c9dc0f2df7ae8bb79141506c5

  • SHA256

    e7be55c53cc03e17484068b1f69f6b2091f9cfe105480b9595f30bb557112f14

  • SHA512

    e22e59c80641929d192493b8bd000fbf92c063b592d6725d3f85c276eaaa5bfb72e350eb7e42c88d8daff486cc188ab430647237dc7ececf7d75d03c3dff62b2

  • SSDEEP

    12288:QnjoopN3RLxQLVX9Kr09aFwSVnWZQzjFeM6DJOjB9sTTHy0y0UK0jWSJSmQhVW8K:kRLxQLJ9KvVnYQb6VOwyrJuWXS5

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5655543251:AAF6zs8TWZ5wmyQhXrUZEpQjh6VaOy-aYoQ/

Extracted

Family

wshrat

C2

http://snkcyp.duckdns.org:44147

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

  • WSHRAT payload 1 IoCs
  • Blocklisted process makes network request 11 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 6 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2da9543a96dc5ca68af4c2e095e21f49.exe
    "C:\Users\Admin\AppData\Local\Temp\2da9543a96dc5ca68af4c2e095e21f49.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1668
    • C:\Users\Admin\AppData\Local\Temp\2da9543a96dc5ca68af4c2e095e21f49.exe
      C:\Users\Admin\AppData\Local\Temp\2da9543a96dc5ca68af4c2e095e21f49.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:976
      • C:\Windows\SysWOW64\wscript.exe
        "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\eHmrw.vbs"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1436
        • C:\Users\Admin\AppData\Roaming\hat.exe
          "C:\Users\Admin\AppData\Roaming\hat.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1308
          • C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe
            "C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe" C:\Users\Admin\AppData\Local\Temp\cajpktnk.qa
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:944
            • C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe
              "C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe" C:\Users\Admin\AppData\Local\Temp\cajpktnk.qa
              6⤵
              • Executes dropped EXE
              • Accesses Microsoft Outlook profiles
              • Adds Run key to start application
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • outlook_office_path
              • outlook_win_path
              PID:1316

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\cajpktnk.qa
    Filesize

    5KB

    MD5

    52d6c758e902d52f73d818e395df4afc

    SHA1

    e947d2b6392657226ca248014dc3933e8ed56007

    SHA256

    a38032f0d1f0dfc6eb4d3b0d898b8faefe486d63a84113ad8f856d130049f910

    SHA512

    2dd0ed8c70a8ace942f48763add368ce411e068ad40ab3524d09edb6a21c074c06404a9b7fd2228cb3253028e63a8885804c5a37b9d9ec3c5ea7a5e584fc2551

  • C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe
    Filesize

    333KB

    MD5

    8a73408537089a2c75b20e5777a45a3c

    SHA1

    6743c59431668ff81f1c09e2c2820417dea10324

    SHA256

    6058cebe9c8ccfd2c4576dbfbaf254e18e0617d3a42e4b4e054b71105cbdb98b

    SHA512

    87955fcebd7dfe6c2b6517266a7525a6ef71bd215de8404622ff2ebf0145a95b44955f6fee33292a247e32fc2e5f3d0f9063cecff2e68d67b987195788917a06

  • C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe
    Filesize

    333KB

    MD5

    8a73408537089a2c75b20e5777a45a3c

    SHA1

    6743c59431668ff81f1c09e2c2820417dea10324

    SHA256

    6058cebe9c8ccfd2c4576dbfbaf254e18e0617d3a42e4b4e054b71105cbdb98b

    SHA512

    87955fcebd7dfe6c2b6517266a7525a6ef71bd215de8404622ff2ebf0145a95b44955f6fee33292a247e32fc2e5f3d0f9063cecff2e68d67b987195788917a06

  • C:\Users\Admin\AppData\Local\Temp\kbddodhxh.exe
    Filesize

    333KB

    MD5

    8a73408537089a2c75b20e5777a45a3c

    SHA1

    6743c59431668ff81f1c09e2c2820417dea10324

    SHA256

    6058cebe9c8ccfd2c4576dbfbaf254e18e0617d3a42e4b4e054b71105cbdb98b

    SHA512

    87955fcebd7dfe6c2b6517266a7525a6ef71bd215de8404622ff2ebf0145a95b44955f6fee33292a247e32fc2e5f3d0f9063cecff2e68d67b987195788917a06

  • C:\Users\Admin\AppData\Local\Temp\ymnzmdjt.z
    Filesize

    296KB

    MD5

    287ed1f3735b69389a9c35b08671168f

    SHA1

    7ceeaf5bc178a85b911d8415f220d82e1a347398

    SHA256

    64a65ddf80fa3ebedaa87d12c18366b83650b779f7af15696442f0725bd29d7f

    SHA512

    1d21132e401ef395fbb92bb669dbb0b10a3daaf60e3b09be68d3884ba10901ee9429cf73b4f6c4d1e5f52a0630c547a35be6a38ed480d977e904b99b55240c5a

  • C:\Users\Admin\AppData\Roaming\eHmrw.vbs
    Filesize

    180KB

    MD5

    cd1f081335b6c49a40d51e090604a9ab

    SHA1

    5b645d1cf905f73cf7bd23af3dae0c3f381c8b2a

    SHA256

    efcde6d8aa951a087836a35b27d0db4f95b8c4886a1800c34ce58deab9aa5bdb

    SHA512

    47b786ea6414f1c7fffdac54b80b6e064dd9fde3adc8094ec1d6a08648b37be0d46b09bbe316da7d662c6ceaad24eb390332bedfd218ec8dd11d77b067fdfccc

  • C:\Users\Admin\AppData\Roaming\hat.exe
    Filesize

    394KB

    MD5

    2a163403e00ba8afbe3c7a2e6df3e2e2

    SHA1

    404038a796396209580a64a537b57695bbd9b175

    SHA256

    4a8bba516cd171925cf36969b9e882c1029dbf88383463f9f646145f54fc35ef

    SHA512

    6a7fdae05a3f2945ef2a8b87c1495dc00a69daa66355cd1009e0b924919f25314b47e541aefd1465c0ca6f2db0dc2b9796b056c1357aa67721ee044446d91187

  • C:\Users\Admin\AppData\Roaming\hat.exe
    Filesize

    394KB

    MD5

    2a163403e00ba8afbe3c7a2e6df3e2e2

    SHA1

    404038a796396209580a64a537b57695bbd9b175

    SHA256

    4a8bba516cd171925cf36969b9e882c1029dbf88383463f9f646145f54fc35ef

    SHA512

    6a7fdae05a3f2945ef2a8b87c1495dc00a69daa66355cd1009e0b924919f25314b47e541aefd1465c0ca6f2db0dc2b9796b056c1357aa67721ee044446d91187

  • \Users\Admin\AppData\Local\Temp\kbddodhxh.exe
    Filesize

    333KB

    MD5

    8a73408537089a2c75b20e5777a45a3c

    SHA1

    6743c59431668ff81f1c09e2c2820417dea10324

    SHA256

    6058cebe9c8ccfd2c4576dbfbaf254e18e0617d3a42e4b4e054b71105cbdb98b

    SHA512

    87955fcebd7dfe6c2b6517266a7525a6ef71bd215de8404622ff2ebf0145a95b44955f6fee33292a247e32fc2e5f3d0f9063cecff2e68d67b987195788917a06

  • \Users\Admin\AppData\Local\Temp\kbddodhxh.exe
    Filesize

    333KB

    MD5

    8a73408537089a2c75b20e5777a45a3c

    SHA1

    6743c59431668ff81f1c09e2c2820417dea10324

    SHA256

    6058cebe9c8ccfd2c4576dbfbaf254e18e0617d3a42e4b4e054b71105cbdb98b

    SHA512

    87955fcebd7dfe6c2b6517266a7525a6ef71bd215de8404622ff2ebf0145a95b44955f6fee33292a247e32fc2e5f3d0f9063cecff2e68d67b987195788917a06

  • \Users\Admin\AppData\Roaming\hat.exe
    Filesize

    394KB

    MD5

    2a163403e00ba8afbe3c7a2e6df3e2e2

    SHA1

    404038a796396209580a64a537b57695bbd9b175

    SHA256

    4a8bba516cd171925cf36969b9e882c1029dbf88383463f9f646145f54fc35ef

    SHA512

    6a7fdae05a3f2945ef2a8b87c1495dc00a69daa66355cd1009e0b924919f25314b47e541aefd1465c0ca6f2db0dc2b9796b056c1357aa67721ee044446d91187

  • memory/944-83-0x0000000000000000-mapping.dmp
  • memory/976-62-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-71-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-73-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-68-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-67-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-65-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-63-0x0000000000400000-0x000000000048A000-memory.dmp
    Filesize

    552KB

  • memory/976-69-0x00000000004842AE-mapping.dmp
  • memory/1308-78-0x0000000000000000-mapping.dmp
  • memory/1316-90-0x0000000000401896-mapping.dmp
  • memory/1316-94-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

  • memory/1316-93-0x00000000004E0000-0x000000000051C000-memory.dmp
    Filesize

    240KB

  • memory/1436-74-0x0000000000000000-mapping.dmp
  • memory/1668-61-0x000000006F460000-0x000000006FA0B000-memory.dmp
    Filesize

    5.7MB

  • memory/1668-58-0x0000000075931000-0x0000000075933000-memory.dmp
    Filesize

    8KB

  • memory/1668-57-0x0000000000000000-mapping.dmp
  • memory/1668-59-0x000000006F460000-0x000000006FA0B000-memory.dmp
    Filesize

    5.7MB

  • memory/1668-60-0x000000006F460000-0x000000006FA0B000-memory.dmp
    Filesize

    5.7MB

  • memory/1760-56-0x0000000000CF0000-0x0000000000D82000-memory.dmp
    Filesize

    584KB

  • memory/1760-55-0x0000000000DC0000-0x0000000000E9C000-memory.dmp
    Filesize

    880KB

  • memory/1760-54-0x00000000011A0000-0x0000000001352000-memory.dmp
    Filesize

    1.7MB