Analysis

  • max time kernel
    148s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    25-02-2021 03:32

General

  • Target

    Versanddetails.exe

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.greatdeck.co
  • Port:
    587
  • Username:
    info.network@greatdeck.co
  • Password:
    Greatd@2018$!

Signatures

  • AgentTesla

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

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Windows security bypass 2 TTPs
  • AgentTesla Payload 3 IoCs
  • Nirsoft 7 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 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.

  • Windows security modification 2 TTPs 8 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Versanddetails.exe
    "C:\Users\Admin\AppData\Local\Temp\Versanddetails.exe"
    1⤵
    • Loads dropped DLL
    • Windows security modification
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe" /EXEFilename "C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\test.bat" /WindowState ""0"" /PriorityClass ""32"" /CommandLine "" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe" /SpecialRun 4101d8 1672
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1496
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Versanddetails.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1068
    • C:\Users\Admin\AppData\Local\Temp\Versanddetails.exe
      "C:\Users\Admin\AppData\Local\Temp\Versanddetails.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1132

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

3
T1089

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • C:\Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • \Users\Admin\AppData\Local\Temp\1f051942-5229-48c8-ae03-b9d3b46f173f\AdvancedRun.exe
    MD5

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • memory/1068-23-0x0000000002580000-0x0000000002581000-memory.dmp
    Filesize

    4KB

  • memory/1068-29-0x00000000060B0000-0x00000000060B1000-memory.dmp
    Filesize

    4KB

  • memory/1068-59-0x0000000006310000-0x0000000006311000-memory.dmp
    Filesize

    4KB

  • memory/1068-58-0x0000000006300000-0x0000000006301000-memory.dmp
    Filesize

    4KB

  • memory/1068-44-0x00000000061E0000-0x00000000061E1000-memory.dmp
    Filesize

    4KB

  • memory/1068-43-0x0000000006280000-0x0000000006281000-memory.dmp
    Filesize

    4KB

  • memory/1068-36-0x0000000006120000-0x0000000006121000-memory.dmp
    Filesize

    4KB

  • memory/1068-18-0x0000000000000000-mapping.dmp
  • memory/1068-20-0x0000000073AF0000-0x00000000741DE000-memory.dmp
    Filesize

    6.9MB

  • memory/1068-21-0x00000000009F0000-0x00000000009F1000-memory.dmp
    Filesize

    4KB

  • memory/1068-22-0x00000000047D0000-0x00000000047D1000-memory.dmp
    Filesize

    4KB

  • memory/1068-35-0x000000007EF30000-0x000000007EF31000-memory.dmp
    Filesize

    4KB

  • memory/1068-24-0x0000000004790000-0x0000000004791000-memory.dmp
    Filesize

    4KB

  • memory/1068-25-0x0000000004792000-0x0000000004793000-memory.dmp
    Filesize

    4KB

  • memory/1068-26-0x0000000005240000-0x0000000005241000-memory.dmp
    Filesize

    4KB

  • memory/1068-34-0x00000000060F0000-0x00000000060F1000-memory.dmp
    Filesize

    4KB

  • memory/1132-60-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1132-66-0x0000000004831000-0x0000000004832000-memory.dmp
    Filesize

    4KB

  • memory/1132-65-0x0000000004830000-0x0000000004831000-memory.dmp
    Filesize

    4KB

  • memory/1132-63-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1132-62-0x0000000073AF0000-0x00000000741DE000-memory.dmp
    Filesize

    6.9MB

  • memory/1132-61-0x00000000004375EE-mapping.dmp
  • memory/1496-15-0x0000000000000000-mapping.dmp
  • memory/1672-9-0x0000000000000000-mapping.dmp
  • memory/1672-11-0x0000000075EA1000-0x0000000075EA3000-memory.dmp
    Filesize

    8KB

  • memory/2008-6-0x0000000000410000-0x00000000004B3000-memory.dmp
    Filesize

    652KB

  • memory/2008-5-0x0000000000610000-0x0000000000611000-memory.dmp
    Filesize

    4KB

  • memory/2008-3-0x0000000000130000-0x0000000000131000-memory.dmp
    Filesize

    4KB

  • memory/2008-2-0x0000000073AF0000-0x00000000741DE000-memory.dmp
    Filesize

    6.9MB