Analysis

  • max time kernel
    122s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    13-07-2021 10:10

General

  • Target

    proof of payment.scr.exe

  • Size

    873KB

  • MD5

    693fc4eb901d82a09678e506960fd24d

  • SHA1

    8fcfb6ea44062af4557b2820591f75126b5edf81

  • SHA256

    59fc44577bd89c7f6ae86b0b13e7e19c4d17612b4d5696e6c70d2e88d5d8115e

  • SHA512

    0c076cf5b30edb1c8f51c11e52778cd20eaf88736467e1c0f401b48154ae54ed31433efa898c0be883bab6a9ed435540d16974858eb691410787f787870d464a

Malware Config

Extracted

Family

netwire

C2

harold.ns01.info:3606

Attributes
  • activex_autorun

    false

  • activex_key

  • copy_executable

    true

  • delete_original

    false

  • host_id

    Ojoko

  • install_path

    %AppData%\Install\Host.exe

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

    enbSUNvD

  • offline_keylogger

    true

  • password

    master12

  • registry_autorun

    false

  • startup_name

  • use_mutex

    true

Signatures

  • NetWire RAT payload 5 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\proof of payment.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\proof of payment.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\emYsBrAgw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp75EB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:764
    • C:\Users\Admin\AppData\Local\Temp\proof of payment.scr.exe
      "{path}"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Users\Admin\AppData\Roaming\Install\Host.exe
        "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1872
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\emYsBrAgw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFA08.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1472
        • C:\Users\Admin\AppData\Roaming\Install\Host.exe
          "{path}"
          4⤵
          • Executes dropped EXE
          PID:1276

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp75EB.tmp
    MD5

    f2cc42374b8757cb9df11f904f8b8574

    SHA1

    7d2c077db7e2a5208be15092bb8a8efc97253b03

    SHA256

    f18e66d9fb28f295141a03159e25763f2766b6d17629e8d1a13d3d07f6384cfa

    SHA512

    ef551f59808560b34aed8f789d5fec6e8dcf35844549daf84f88cbe00d45e275e0609ed8f877d10d21f3fd6163bd28bf73f77472b62e6c88ad15a3683ff8037b

  • C:\Users\Admin\AppData\Local\Temp\tmpFA08.tmp
    MD5

    f2cc42374b8757cb9df11f904f8b8574

    SHA1

    7d2c077db7e2a5208be15092bb8a8efc97253b03

    SHA256

    f18e66d9fb28f295141a03159e25763f2766b6d17629e8d1a13d3d07f6384cfa

    SHA512

    ef551f59808560b34aed8f789d5fec6e8dcf35844549daf84f88cbe00d45e275e0609ed8f877d10d21f3fd6163bd28bf73f77472b62e6c88ad15a3683ff8037b

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    MD5

    693fc4eb901d82a09678e506960fd24d

    SHA1

    8fcfb6ea44062af4557b2820591f75126b5edf81

    SHA256

    59fc44577bd89c7f6ae86b0b13e7e19c4d17612b4d5696e6c70d2e88d5d8115e

    SHA512

    0c076cf5b30edb1c8f51c11e52778cd20eaf88736467e1c0f401b48154ae54ed31433efa898c0be883bab6a9ed435540d16974858eb691410787f787870d464a

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    MD5

    693fc4eb901d82a09678e506960fd24d

    SHA1

    8fcfb6ea44062af4557b2820591f75126b5edf81

    SHA256

    59fc44577bd89c7f6ae86b0b13e7e19c4d17612b4d5696e6c70d2e88d5d8115e

    SHA512

    0c076cf5b30edb1c8f51c11e52778cd20eaf88736467e1c0f401b48154ae54ed31433efa898c0be883bab6a9ed435540d16974858eb691410787f787870d464a

  • C:\Users\Admin\AppData\Roaming\Install\Host.exe
    MD5

    693fc4eb901d82a09678e506960fd24d

    SHA1

    8fcfb6ea44062af4557b2820591f75126b5edf81

    SHA256

    59fc44577bd89c7f6ae86b0b13e7e19c4d17612b4d5696e6c70d2e88d5d8115e

    SHA512

    0c076cf5b30edb1c8f51c11e52778cd20eaf88736467e1c0f401b48154ae54ed31433efa898c0be883bab6a9ed435540d16974858eb691410787f787870d464a

  • \Users\Admin\AppData\Roaming\Install\Host.exe
    MD5

    693fc4eb901d82a09678e506960fd24d

    SHA1

    8fcfb6ea44062af4557b2820591f75126b5edf81

    SHA256

    59fc44577bd89c7f6ae86b0b13e7e19c4d17612b4d5696e6c70d2e88d5d8115e

    SHA512

    0c076cf5b30edb1c8f51c11e52778cd20eaf88736467e1c0f401b48154ae54ed31433efa898c0be883bab6a9ed435540d16974858eb691410787f787870d464a

  • memory/584-71-0x0000000000400000-0x0000000000433000-memory.dmp
    Filesize

    204KB

  • memory/584-68-0x0000000000400000-0x0000000000433000-memory.dmp
    Filesize

    204KB

  • memory/584-69-0x000000000040242D-mapping.dmp
  • memory/584-70-0x0000000076641000-0x0000000076643000-memory.dmp
    Filesize

    8KB

  • memory/764-66-0x0000000000000000-mapping.dmp
  • memory/1276-85-0x000000000040242D-mapping.dmp
  • memory/1276-88-0x0000000000400000-0x0000000000433000-memory.dmp
    Filesize

    204KB

  • memory/1472-82-0x0000000000000000-mapping.dmp
  • memory/1652-60-0x0000000000DB0000-0x0000000000DB1000-memory.dmp
    Filesize

    4KB

  • memory/1652-65-0x0000000005160000-0x00000000051CB000-memory.dmp
    Filesize

    428KB

  • memory/1652-64-0x00000000057E0000-0x0000000005897000-memory.dmp
    Filesize

    732KB

  • memory/1652-63-0x0000000000220000-0x0000000000222000-memory.dmp
    Filesize

    8KB

  • memory/1652-62-0x0000000004420000-0x0000000004421000-memory.dmp
    Filesize

    4KB

  • memory/1872-73-0x0000000000000000-mapping.dmp
  • memory/1872-76-0x0000000001380000-0x0000000001381000-memory.dmp
    Filesize

    4KB

  • memory/1872-79-0x0000000000410000-0x0000000000411000-memory.dmp
    Filesize

    4KB