Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-10-2022 14:42

General

  • Target

    06e50f23173ca3941f551f8e178c65c1.exe

  • Size

    1.2MB

  • MD5

    06e50f23173ca3941f551f8e178c65c1

  • SHA1

    509ff53640bd3412473cfea726cc510f48260ef3

  • SHA256

    64b231212d08ec7542aaebc297101451378802b2d5e9ac47646d157185dcb8e3

  • SHA512

    465c6a57b926067edab879a5aa36594432fc4811af1a40b7656a134781ecb044e151d64fbdb96f976e124577a1bfbbb510338e8098d14c2afde991c551528698

  • SSDEEP

    24576:0AOcZ2i7zNVkD7GVJZDlUbnVg+RKf5nLy5faNnCLUEVYfA3zEqoGrYP:iaVJNlUbnVg+RKxy5faNrEVYfIzEdGEP

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

lowaspeed.ddnsfree.com:48562

411speed.duckdns.org:48562

Mutex

042723c4-0804-4212-bf56-4b1b2669ca7c

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    411speed.duckdns.org

  • backup_dns_server

  • buffer_size

    65538

  • build_time

    2022-07-02T05:32:06.440076436Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    48562

  • default_group

    Clowns

  • enable_debug_mode

    true

  • gc_threshold

    1.0485772e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.0485772e+07

  • mutex

    042723c4-0804-4212-bf56-4b1b2669ca7c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    lowaspeed.ddnsfree.com

  • primary_dns_server

  • 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

    8009

Signatures

  • NanoCore

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

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\06e50f23173ca3941f551f8e178c65c1.exe
    "C:\Users\Admin\AppData\Local\Temp\06e50f23173ca3941f551f8e178c65c1.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\temp\8_85\qtmrmfbdac.vbe"
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4052
      • C:\Users\Admin\AppData\Local\Temp\8_85\hpfcljs.exe
        "C:\Users\Admin\AppData\Local\Temp\8_85\hpfcljs.exe" gobgs.vcb
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4928
        • 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
          • Suspicious use of WriteProcessMemory
          PID:424
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DDP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB480.tmp"
            5⤵
            • Creates scheduled task(s)
            PID:3784
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DDP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB53C.tmp"
            5⤵
            • Creates scheduled task(s)
            PID:4976

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\8_85\gobgs.vcb
    Filesize

    140.4MB

    MD5

    5c9aa8429c875128ac71960058b731f7

    SHA1

    34799997adf0a2f2e2c9deddc6f4fa5451385d85

    SHA256

    cd89b3103b7f3fb57862e4e07b2feae57488fcad878c08fd32f4793e3b9b269c

    SHA512

    dc15c41ce13a71f7fd0a78f3d51932c850b0bc091e540d190123305143d15e46e500b67482e47ee4a2e89244a6bbecaec1a6713d2f1c574367f3f7293bc5a5b2

  • C:\Users\Admin\AppData\Local\Temp\8_85\hpfcljs.exe
    Filesize

    1.1MB

    MD5

    8ccb142fc129503bc3af3aa8340bfee5

    SHA1

    5c06bf8a8dfc40ead13bc36285a7d09dea35c0e1

    SHA256

    3ed45f8139912948cbc5193b9eb9b4910ba3978b48e792538dc6d39bb0a246ad

    SHA512

    80822dececf79be2b83d29f739ffbb44ec54febccf385c07cb7382125c52ab8e7012c49091687709a38da14a9beaf2cbfe3f8aeea1744eba72eff788795331f8

  • C:\Users\Admin\AppData\Local\Temp\8_85\hpfcljs.exe
    Filesize

    1.1MB

    MD5

    8ccb142fc129503bc3af3aa8340bfee5

    SHA1

    5c06bf8a8dfc40ead13bc36285a7d09dea35c0e1

    SHA256

    3ed45f8139912948cbc5193b9eb9b4910ba3978b48e792538dc6d39bb0a246ad

    SHA512

    80822dececf79be2b83d29f739ffbb44ec54febccf385c07cb7382125c52ab8e7012c49091687709a38da14a9beaf2cbfe3f8aeea1744eba72eff788795331f8

  • C:\Users\Admin\AppData\Local\Temp\8_85\igswbbkwrb.xml
    Filesize

    53KB

    MD5

    044df4c4d4befc9c56fc4d1c0e25c450

    SHA1

    ea27a6ad395c6e1b1e60236a7ee6f9a325909ad6

    SHA256

    75d44124eecbd3f33ad5e1c8dbeb94802913170f11b97b0df1a37159bea47031

    SHA512

    8e1e424d2304ca0f19364fec50260e5f6aa0dff4f11a9d2d1dee321e79d68997f813b9d5fdc620a74bcd730393ee0f65afc6a93dafab447f82cd21bae6dad7bc

  • C:\Users\Admin\AppData\Local\Temp\8_85\tpoifi.wpu
    Filesize

    420KB

    MD5

    8933424c73dcc669d2d9f9f22ad68777

    SHA1

    f078bba26ee820175ca208a752787268a96babe3

    SHA256

    0c7b2607b97b7fe6c3b57a278583b30b668c60359878ee86a5a14651e1e944fd

    SHA512

    3fcf11d60a7ced3b3748379beaf539edbde850f033af8056e56f006150108fb2fa1ff7fa382a675b88fb2cb702dc23f3ad7c55980581e7cbbc234f1b5bbf1f38

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

    44KB

    MD5

    9d352bc46709f0cb5ec974633a0c3c94

    SHA1

    1969771b2f022f9a86d77ac4d4d239becdf08d07

    SHA256

    2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

    SHA512

    13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

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

    44KB

    MD5

    9d352bc46709f0cb5ec974633a0c3c94

    SHA1

    1969771b2f022f9a86d77ac4d4d239becdf08d07

    SHA256

    2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

    SHA512

    13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

  • C:\Users\Admin\AppData\Local\Temp\tmpB480.tmp
    Filesize

    1KB

    MD5

    95aceabc58acad5d73372b0966ee1b35

    SHA1

    2293b7ad4793cf574b1a5220e85f329b5601040a

    SHA256

    8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

    SHA512

    00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

  • C:\Users\Admin\AppData\Local\Temp\tmpB53C.tmp
    Filesize

    1KB

    MD5

    2271642ca970891700e3f48439739ed8

    SHA1

    cd472df2349f7db9e1e460d0ee28acd97b8a8793

    SHA256

    7aba66abbcb0b13455609174db23aed495a9adbef0e0acd28baa9c92445eda68

    SHA512

    4669a4ef8ec28cdb852ffc1401576b1bf9a9d837797d7d92bc88c18b3097404f36854e50167b309706fef400cabc43c876569ce2797ba85eb169a2783b8fe807

  • C:\Users\Admin\AppData\Local\temp\8_85\qtmrmfbdac.vbe
    Filesize

    23KB

    MD5

    62b3d2b7353dc8cb3f11eaf9cd526171

    SHA1

    30524047df59bc41639a44fa0630df37815cc65e

    SHA256

    120a53b215696ac26afb128dc91e41317c84bbbf1a69387522170e4fcf63a44d

    SHA512

    0d7b0ec95d8ce15fe281150c4c22e7a71c5ae7cd438a0e04720b2d2d67e5cf70846c28f7120449dcf4b5c112953aaa2b5d036fc1ef0cb174b913bf5f3ee88f56

  • memory/424-147-0x0000000001000000-0x000000000103A000-memory.dmp
    Filesize

    232KB

  • memory/424-148-0x00000000062C0000-0x0000000006864000-memory.dmp
    Filesize

    5.6MB

  • memory/424-149-0x0000000005D10000-0x0000000005DA2000-memory.dmp
    Filesize

    584KB

  • memory/424-150-0x0000000005E50000-0x0000000005EEC000-memory.dmp
    Filesize

    624KB

  • memory/424-151-0x0000000005CE0000-0x0000000005CEA000-memory.dmp
    Filesize

    40KB

  • memory/424-144-0x000000000101E792-mapping.dmp
  • memory/424-143-0x0000000001000000-0x00000000015B7000-memory.dmp
    Filesize

    5.7MB

  • memory/3784-152-0x0000000000000000-mapping.dmp
  • memory/4052-135-0x0000000000000000-mapping.dmp
  • memory/4928-138-0x0000000000000000-mapping.dmp
  • memory/4976-154-0x0000000000000000-mapping.dmp