Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    15/11/2022, 11:38

General

  • Target

    RFQ.exe

  • Size

    1.4MB

  • MD5

    30324eabfb10bf176f913b539a895635

  • SHA1

    52729961abfa1a435685a67bd1536323a6676c17

  • SHA256

    f2c7a204dd011ce0e8466c7fdd0e62de4e5bd919c00846233e8dd7adca7c1888

  • SHA512

    a4c8440249ceab6e5f7c278a3972d4fe8305497cca71286b1d097abc28367fef0dfa7d69a22c3dd14be68c7f1aa81d9d81a625bb982f0f4264a362f30bfd8bce

  • SSDEEP

    24576:oAOcZqzzl+uTN9kQs+ikcTuo2uFiKVxOHmFRbr6+L/r:GhkQs+uTuoXFiXibr6G

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

azizurfattahtradin.ddns.net:7664

91.193.75.132:7664

Mutex

e7a222f2-0bee-4c79-b641-e16bdd86f638

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    91.193.75.132

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-08-06T10:19:05.704905436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7664

  • default_group

    binxl

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    e7a222f2-0bee-4c79-b641-e16bdd86f638

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    azizurfattahtradin.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\temp\8_77\brriiae.vbe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Users\Admin\AppData\Local\Temp\8_77\ihnevm.exe
        "C:\Users\Admin\AppData\Local\Temp\8_77\ihnevm.exe" ooxfh.rcj
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1508
        • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
          "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:820

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\8_77\ihnevm.exe

          Filesize

          1.4MB

          MD5

          2ce687e95f82d96214d6b0b7a3b6d83c

          SHA1

          2e86f893b398aec16f74fc799b29f2c7d14ba7bb

          SHA256

          48ba8154619448b749e4003781ddccf2da6696f7070dc95e3068b646aab9ace0

          SHA512

          5949c2807cf4dfc9f04500aac97cc2c9d05f1e195ed43055a79c07877cef76c9aba73f46b658c2ac1d47d12b9510dc0592c1c72ca7845d9f85fa368aa56f4055

        • C:\Users\Admin\AppData\Local\Temp\8_77\ihnevm.exe

          Filesize

          1.4MB

          MD5

          2ce687e95f82d96214d6b0b7a3b6d83c

          SHA1

          2e86f893b398aec16f74fc799b29f2c7d14ba7bb

          SHA256

          48ba8154619448b749e4003781ddccf2da6696f7070dc95e3068b646aab9ace0

          SHA512

          5949c2807cf4dfc9f04500aac97cc2c9d05f1e195ed43055a79c07877cef76c9aba73f46b658c2ac1d47d12b9510dc0592c1c72ca7845d9f85fa368aa56f4055

        • C:\Users\Admin\AppData\Local\Temp\8_77\ooxfh.rcj

          Filesize

          118.1MB

          MD5

          3a3c904e6c0654518f8d976cbb225c79

          SHA1

          4cfaabc24ed7966c781dfa8dbb1b7bcb33733d68

          SHA256

          34a18bc96439be289cc16dd9dfc9e69f2a588d70a5024c3a57f099a2fdb0dd5e

          SHA512

          75a230ffea7e5c4b22150bc8d384afb178caeb54ec094451b330b6a6ff5de16bd08f0496e8a75550bc65fde0c65c99418c3f5359596aa0a1ce3e09244ef3ab7c

        • C:\Users\Admin\AppData\Local\Temp\8_77\twephvk.pdf

          Filesize

          57KB

          MD5

          72bc84cf478aa689ba12c46705f99173

          SHA1

          6893a837376c41b088745fede67e7b806da31453

          SHA256

          fbd5c66fbf2346f5b0e5fe3d2d3d9dfb89cd1dcc316878b728108d8460f694c7

          SHA512

          a009917d69205a209392b855fd932f262e5468c526e3141a8fd65da1a8c1f59395962dede7b95a8ad1e19eb2c81851304848471db9e8d49985e8dc5310985caf

        • C:\Users\Admin\AppData\Local\Temp\8_77\xatpvu.tch

          Filesize

          405KB

          MD5

          32c53d0d3e94095c0280fa448820b3e6

          SHA1

          8006048315b51f05f52525c62410b02d0e467ad0

          SHA256

          feb773a8447581c11e82e03c25762663f1b7712a849dd2e06e7e0e4db98462b9

          SHA512

          0e314182e5bbb0a2a1ec40be13dbeb3805dd528701479199e02addba2b295b16f4c2768876d39009fa494013106d5e2485eaff8aa9dd446b9d4b64b4ad78a7bc

        • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe

          Filesize

          44KB

          MD5

          0e06054beb13192588e745ee63a84173

          SHA1

          30b7d4d1277bafd04a83779fd566a1f834a8d113

          SHA256

          c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

          SHA512

          251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

        • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe

          Filesize

          44KB

          MD5

          0e06054beb13192588e745ee63a84173

          SHA1

          30b7d4d1277bafd04a83779fd566a1f834a8d113

          SHA256

          c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

          SHA512

          251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

        • C:\Users\Admin\AppData\Local\temp\8_77\brriiae.vbe

          Filesize

          23KB

          MD5

          dd6f3886e42acd338b4283cdf14d0579

          SHA1

          c453b254b9e91972b1c797218124e10d328598d0

          SHA256

          aa089ac025032b2d9dad118c3b6ed01ab1690bbd6e2a80ee5a6fa4155c8b62b2

          SHA512

          e23ffb60eff82d7589feb08b2096608e2e4ecad26514c912837f895f1a4a9690bf1e5c71364c7acff37183d827a19bab193e82d5566d4e0e45e781e9c9533791

        • \Users\Admin\AppData\Local\Temp\8_77\ihnevm.exe

          Filesize

          1.4MB

          MD5

          2ce687e95f82d96214d6b0b7a3b6d83c

          SHA1

          2e86f893b398aec16f74fc799b29f2c7d14ba7bb

          SHA256

          48ba8154619448b749e4003781ddccf2da6696f7070dc95e3068b646aab9ace0

          SHA512

          5949c2807cf4dfc9f04500aac97cc2c9d05f1e195ed43055a79c07877cef76c9aba73f46b658c2ac1d47d12b9510dc0592c1c72ca7845d9f85fa368aa56f4055

        • \Users\Admin\AppData\Local\Temp\RegSvcs.exe

          Filesize

          44KB

          MD5

          0e06054beb13192588e745ee63a84173

          SHA1

          30b7d4d1277bafd04a83779fd566a1f834a8d113

          SHA256

          c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

          SHA512

          251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

        • memory/820-73-0x00000000003C0000-0x00000000009CB000-memory.dmp

          Filesize

          6.0MB

        • memory/820-67-0x00000000003C0000-0x00000000009CB000-memory.dmp

          Filesize

          6.0MB

        • memory/820-69-0x00000000003C0000-0x00000000009CB000-memory.dmp

          Filesize

          6.0MB

        • memory/820-75-0x00000000003C0000-0x00000000009CB000-memory.dmp

          Filesize

          6.0MB

        • memory/820-77-0x00000000003C0000-0x00000000003F8000-memory.dmp

          Filesize

          224KB

        • memory/820-79-0x0000000000A90000-0x0000000000A9A000-memory.dmp

          Filesize

          40KB

        • memory/820-80-0x0000000000AA0000-0x0000000000ABE000-memory.dmp

          Filesize

          120KB

        • memory/820-81-0x0000000000AC0000-0x0000000000ACA000-memory.dmp

          Filesize

          40KB

        • memory/1232-54-0x0000000076391000-0x0000000076393000-memory.dmp

          Filesize

          8KB