Analysis

  • max time kernel
    120s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    19-04-2021 06:01

General

  • Target

    Discharge - 10,500MT of ZN CONCS - Bukpyung.exe

  • Size

    604KB

  • MD5

    b2553cbe8e480b5100244a55885d1410

  • SHA1

    f167899347bb55d9b01755b4024ba04de94cc4f9

  • SHA256

    4b0e5ba2dd00abd0126cccabaf2b107a218040f555cd0432858a25de12cbdb36

  • SHA512

    266ad46ef21fde520307f7fe2b43bf6e750981d5a29d9987599e06556ece733a96b2fdd8a55d742e893f8724a1201673fe89fde8a9056871d1659bd09b9a8912

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    officepost8

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Nirsoft 13 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 8 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe
    "C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\sc.exe" /WindowState 0 /CommandLine "stop WinDefend" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 396
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1472
    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" /WindowState 0 /CommandLine "rmdir 'C:\ProgramData\Microsoft\Windows Defender' -Recurse" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:668
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 668
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:760
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\zIwpbfadr.vbs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath C:\
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1992
    • C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe
      "C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe"
      2⤵
        PID:1348
      • C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe
        "C:\Users\Admin\AppData\Local\Temp\Discharge - 10,500MT of ZN CONCS - Bukpyung.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1144

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • C:\Users\Admin\AppData\Local\Temp\zIwpbfadr.vbs
      MD5

      570e1760047887d4773c02a7f0c0a9ef

      SHA1

      ea36b58136c15c0c38ca496e5fd55e9de62073dc

      SHA256

      c14774447472f5eec655d2046e6e4930b3bed4877de328d4f8a58416b7144db2

      SHA512

      aeb14674534d2a4cc6d58fe733a4a6085d031f1a45ddad9e3e8fa312879b6cd8a1dff962529639b8ebea98d1ca8a9d42c0893d267696a70c7e9db696980b9ef3

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • \Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      MD5

      17fc12902f4769af3a9271eb4e2dacce

      SHA1

      9a4a1581cc3971579574f837e110f3bd6d529dab

      SHA256

      29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

      SHA512

      036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

    • memory/396-68-0x00000000752F1000-0x00000000752F3000-memory.dmp
      Filesize

      8KB

    • memory/396-66-0x0000000000000000-mapping.dmp
    • memory/652-85-0x0000000000000000-mapping.dmp
    • memory/668-77-0x0000000000000000-mapping.dmp
    • memory/760-82-0x0000000000000000-mapping.dmp
    • memory/1084-59-0x0000000001010000-0x0000000001011000-memory.dmp
      Filesize

      4KB

    • memory/1084-63-0x0000000000920000-0x0000000000957000-memory.dmp
      Filesize

      220KB

    • memory/1084-62-0x0000000000FD0000-0x0000000000FD1000-memory.dmp
      Filesize

      4KB

    • memory/1084-61-0x0000000000390000-0x0000000000392000-memory.dmp
      Filesize

      8KB

    • memory/1144-89-0x00000000004617EE-mapping.dmp
    • memory/1144-88-0x0000000000400000-0x0000000000466000-memory.dmp
      Filesize

      408KB

    • memory/1144-97-0x00000000005F0000-0x00000000005F1000-memory.dmp
      Filesize

      4KB

    • memory/1144-90-0x0000000000400000-0x0000000000466000-memory.dmp
      Filesize

      408KB

    • memory/1472-72-0x0000000000000000-mapping.dmp
    • memory/1992-98-0x0000000000550000-0x0000000000551000-memory.dmp
      Filesize

      4KB

    • memory/1992-103-0x0000000005650000-0x0000000005651000-memory.dmp
      Filesize

      4KB

    • memory/1992-96-0x0000000005150000-0x0000000005151000-memory.dmp
      Filesize

      4KB

    • memory/1992-94-0x0000000000AA0000-0x0000000000AA1000-memory.dmp
      Filesize

      4KB

    • memory/1992-92-0x0000000000000000-mapping.dmp
    • memory/1992-99-0x0000000000552000-0x0000000000553000-memory.dmp
      Filesize

      4KB

    • memory/1992-100-0x0000000005240000-0x0000000005241000-memory.dmp
      Filesize

      4KB

    • memory/1992-95-0x00000000047A0000-0x00000000047A1000-memory.dmp
      Filesize

      4KB

    • memory/1992-108-0x00000000056F0000-0x00000000056F1000-memory.dmp
      Filesize

      4KB

    • memory/1992-109-0x00000000061E0000-0x00000000061E1000-memory.dmp
      Filesize

      4KB

    • memory/1992-116-0x0000000006280000-0x0000000006281000-memory.dmp
      Filesize

      4KB

    • memory/1992-117-0x000000007EF30000-0x000000007EF31000-memory.dmp
      Filesize

      4KB

    • memory/1992-118-0x0000000006150000-0x0000000006151000-memory.dmp
      Filesize

      4KB

    • memory/1992-132-0x0000000006300000-0x0000000006301000-memory.dmp
      Filesize

      4KB

    • memory/1992-133-0x0000000006310000-0x0000000006311000-memory.dmp
      Filesize

      4KB