Analysis

  • max time kernel
    130s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08-04-2021 07:05

General

  • Target

    Q88_Bulk Carrier.exe

  • Size

    525KB

  • MD5

    2fe4b829f1cfa6c3183a1e0391309eb0

  • SHA1

    14c56282c5a43cd9b33f5f90eaaf6953526e9b75

  • SHA256

    3f0fa5c8ebb2640afc948bfd5c8bb0ba644222b3bc15c095085d718843d59915

  • SHA512

    2dc7fe45124b72e65a5f89aea0a54e8f630b061635c5375c3a504b93d0136a51ac8e42906eb0806930a1445629d63cb0e33c14b53cc17b95c4cb6cf5ae9f4920

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.hyshippingcn.com
  • Port:
    587
  • Username:
    plogs112@hyshippingcn.com
  • Password:
    e*u@qkS4

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Nirsoft 5 IoCs
  • Executes dropped EXE 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.

  • Looks up external IP address via web service 2 IoCs

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

  • 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 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Q88_Bulk Carrier.exe
    "C:\Users\Admin\AppData\Local\Temp\Q88_Bulk Carrier.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4764
    • 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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3176
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 3176
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4192
    • 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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3288
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 3288
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3372
    • C:\Users\Admin\AppData\Local\Temp\Q88_Bulk Carrier.exe
      "C:\Users\Admin\AppData\Local\Temp\Q88_Bulk Carrier.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4584

Network

MITRE ATT&CK Matrix ATT&CK v6

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\Microsoft\CLR_v4.0_32\UsageLogs\Q88_Bulk Carrier.exe.log
    MD5

    4f9330dcb7e8730af9341cfdf0d8030f

    SHA1

    67daaf17560b15fe1d861139bce85a3ff6dbed23

    SHA256

    1c25f424605d0e3ccf1ec077c36b3d2c89aa628521d10df851c2ff7689ad4617

    SHA512

    e3becfad18409be0797d172e8b1364775726f9d33d8f125c87656a829b0c0c86fcec433db4446371e68530c0d7cb594fdcf28bb75e1f5d4fba64fe38329d9a40

  • 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

  • memory/3176-9-0x0000000000000000-mapping.dmp
  • memory/3288-15-0x0000000000000000-mapping.dmp
  • memory/3372-17-0x0000000000000000-mapping.dmp
  • memory/4192-13-0x0000000000000000-mapping.dmp
  • memory/4584-22-0x0000000073370000-0x0000000073A5E000-memory.dmp
    Filesize

    6.9MB

  • memory/4584-32-0x0000000005781000-0x0000000005782000-memory.dmp
    Filesize

    4KB

  • memory/4584-31-0x0000000001520000-0x0000000001521000-memory.dmp
    Filesize

    4KB

  • memory/4584-30-0x0000000006F90000-0x0000000006F91000-memory.dmp
    Filesize

    4KB

  • memory/4584-28-0x0000000005D60000-0x0000000005D61000-memory.dmp
    Filesize

    4KB

  • memory/4584-27-0x0000000005880000-0x0000000005881000-memory.dmp
    Filesize

    4KB

  • memory/4584-20-0x000000000043763E-mapping.dmp
  • memory/4584-19-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/4584-26-0x0000000005780000-0x0000000005781000-memory.dmp
    Filesize

    4KB

  • memory/4764-7-0x00000000054A0000-0x00000000054A1000-memory.dmp
    Filesize

    4KB

  • memory/4764-3-0x0000000000B30000-0x0000000000B31000-memory.dmp
    Filesize

    4KB

  • memory/4764-5-0x0000000002CA0000-0x0000000002CA2000-memory.dmp
    Filesize

    8KB

  • memory/4764-6-0x00000000053D0000-0x0000000005423000-memory.dmp
    Filesize

    332KB

  • memory/4764-2-0x0000000073370000-0x0000000073A5E000-memory.dmp
    Filesize

    6.9MB

  • memory/4764-8-0x0000000005E00000-0x0000000005E01000-memory.dmp
    Filesize

    4KB

  • memory/4764-11-0x0000000005580000-0x0000000005581000-memory.dmp
    Filesize

    4KB