Analysis

  • max time kernel
    143s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    03-12-2020 08:30

General

  • Target

    Consignment Document PL&BL Draft.exe

  • Size

    684KB

  • MD5

    b70ffeb2babbacb28b22411beccb4642

  • SHA1

    3c096e92894c9ff7bfae0fcc0ce5f250cb4ebe9f

  • SHA256

    623d707cab5c5dc378a5100018e29f88949f4ea4be4b34cc2fc36e1612b68100

  • SHA512

    79471594362dcb6f5ecbddb34ce68ddbbfc2320fa088439a54a0dfba7c878d32e5715366808b7a7399f33c9b992e6ebac75d90d9cdc5d591b42e480f4874db41

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

:5550

centurygift.myq-see.com:5550

Mutex

a60f1e04-b281-49b0-9733-22b28c2ea6d7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    centurygift.myq-see.com

  • backup_dns_server

    centurygift.myq-see.com

  • buffer_size

    65535

  • build_time

    2020-09-08T01:46:57.095018036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5550

  • default_group

    Default

  • 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

    a60f1e04-b281-49b0-9733-22b28c2ea6d7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • primary_dns_server

    centurygift.myq-see.com

  • 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

Extracted

Family

asyncrat

Version

0.5.7B

C2

centurygift.myq-see.com:5500

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    bWbB4qsIdUz0RazB3LzXObRAUS2SpbLy

  • anti_detection

    false

  • autorun

    true

  • bdos

    false

  • delay

    Default

  • host

    centurygift.myq-see.com

  • hwid

    3

  • install_file

  • install_folder

    %Temp%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    5500

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • NanoCore

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

  • Async RAT payload 5 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 4 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Consignment Document PL&BL Draft.exe
    "C:\Users\Admin\AppData\Local\Temp\Consignment Document PL&BL Draft.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Users\Admin\AppData\Local\Temp\Consignment Document PL&BL Draft.exe
      "{path}"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Users\Admin\AppData\Local\Temp\Rczgwoxvqzh.exe
        "C:\Users\Admin\AppData\Local\Temp\Rczgwoxvqzh.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:620
        • C:\Users\Admin\AppData\Local\Temp\Isgeprf.exe
          "C:\Users\Admin\AppData\Local\Temp\Isgeprf.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1540
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "VLC2" /tr '"C:\Users\Admin\AppData\Local\Temp\VLC2.exe"' & exit
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:800
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /f /sc onlogon /rl highest /tn "VLC2" /tr '"C:\Users\Admin\AppData\Local\Temp\VLC2.exe"'
              6⤵
              • Creates scheduled task(s)
              PID:1908
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD72D.tmp.bat""
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1976
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              6⤵
              • Delays execution with timeout.exe
              PID:2012
            • C:\Users\Admin\AppData\Local\Temp\VLC2.exe
              "C:\Users\Admin\AppData\Local\Temp\VLC2.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:336
        • C:\Users\Admin\AppData\Local\Temp\Fdquqwatjjr.exe
          "C:\Users\Admin\AppData\Local\Temp\Fdquqwatjjr.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:572
      • C:\Users\Admin\AppData\Local\Temp\Icda.exe
        "C:\Users\Admin\AppData\Local\Temp\Icda.exe"
        3⤵
        • 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:1744

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

Credential Access

Credentials in Files

2
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Fdquqwatjjr.exe
    MD5

    e8dc83a4ed7657d3211077b7f343fc3c

    SHA1

    0af6cb0ca0d55a2ec6626443b5d91f9c0d0c332c

    SHA256

    c0791632452fd17fdb08b4241ad7b6f5aaf1af6190861301135ef3631f4b4020

    SHA512

    f37155be17e744b46cb76f746ec8d02e7d6f0ec8b3d8caa583081504e15674b9c1bb5e3061b149aeb599325293959704064b3512f156797c1f5046289e41125c

  • C:\Users\Admin\AppData\Local\Temp\Fdquqwatjjr.exe
    MD5

    e8dc83a4ed7657d3211077b7f343fc3c

    SHA1

    0af6cb0ca0d55a2ec6626443b5d91f9c0d0c332c

    SHA256

    c0791632452fd17fdb08b4241ad7b6f5aaf1af6190861301135ef3631f4b4020

    SHA512

    f37155be17e744b46cb76f746ec8d02e7d6f0ec8b3d8caa583081504e15674b9c1bb5e3061b149aeb599325293959704064b3512f156797c1f5046289e41125c

  • C:\Users\Admin\AppData\Local\Temp\Icda.exe
    MD5

    bb21f995740d8bc1549d9cbc32874dd8

    SHA1

    8c53b645027362ec97c15735eeb39a12d62c8a74

    SHA256

    9589565f7beb6dccfe4f8424455271bbf810182ea94dacbc8c081577e34a51e1

    SHA512

    608e1871476d3534d9c7bc1951ccc4abbb3056f57d3c64beb1d13b8a453de7b113001c70c0a1728a2776538d464893990a88035b2fb34254f24927e4536ae24b

  • C:\Users\Admin\AppData\Local\Temp\Icda.exe
    MD5

    bb21f995740d8bc1549d9cbc32874dd8

    SHA1

    8c53b645027362ec97c15735eeb39a12d62c8a74

    SHA256

    9589565f7beb6dccfe4f8424455271bbf810182ea94dacbc8c081577e34a51e1

    SHA512

    608e1871476d3534d9c7bc1951ccc4abbb3056f57d3c64beb1d13b8a453de7b113001c70c0a1728a2776538d464893990a88035b2fb34254f24927e4536ae24b

  • C:\Users\Admin\AppData\Local\Temp\Isgeprf.exe
    MD5

    e2da4f42475e01f7961ef2fb929de54e

    SHA1

    e57df765da7135d578b29e4619cc395a729eb757

    SHA256

    488c59fddf2db00da7fb4d6589183adc7396edc4233f23eb950aa7191fe4366e

    SHA512

    08cf988be2b1d4214812477759bf273e1281d762491d5eb40ed77c95ad701a08fce0d5a67b7d2163389e0efa96422dd535d1062ecb345ac6054688e38eb6e2a0

  • C:\Users\Admin\AppData\Local\Temp\Isgeprf.exe
    MD5

    e2da4f42475e01f7961ef2fb929de54e

    SHA1

    e57df765da7135d578b29e4619cc395a729eb757

    SHA256

    488c59fddf2db00da7fb4d6589183adc7396edc4233f23eb950aa7191fe4366e

    SHA512

    08cf988be2b1d4214812477759bf273e1281d762491d5eb40ed77c95ad701a08fce0d5a67b7d2163389e0efa96422dd535d1062ecb345ac6054688e38eb6e2a0

  • C:\Users\Admin\AppData\Local\Temp\Rczgwoxvqzh.exe
    MD5

    01475371c9519a0c8f64b7606a0833e0

    SHA1

    58de8246d2910f00ed1d4deabc69cf60d8ddcf8b

    SHA256

    97a5cab2336f3b81f82d7ec85b2f0937ce39d10e512bf0bdade9248d6d1bc682

    SHA512

    9db9f3d2f6db0e1e7154d79b54316a0a54d75bdab327ec248d23f7eed3db54bb00c61c003c92e1b1c38d30eefa6a680cba73b7cf28de3c2181bb82b25e40662f

  • C:\Users\Admin\AppData\Local\Temp\Rczgwoxvqzh.exe
    MD5

    01475371c9519a0c8f64b7606a0833e0

    SHA1

    58de8246d2910f00ed1d4deabc69cf60d8ddcf8b

    SHA256

    97a5cab2336f3b81f82d7ec85b2f0937ce39d10e512bf0bdade9248d6d1bc682

    SHA512

    9db9f3d2f6db0e1e7154d79b54316a0a54d75bdab327ec248d23f7eed3db54bb00c61c003c92e1b1c38d30eefa6a680cba73b7cf28de3c2181bb82b25e40662f

  • C:\Users\Admin\AppData\Local\Temp\VLC2.exe
    MD5

    e2da4f42475e01f7961ef2fb929de54e

    SHA1

    e57df765da7135d578b29e4619cc395a729eb757

    SHA256

    488c59fddf2db00da7fb4d6589183adc7396edc4233f23eb950aa7191fe4366e

    SHA512

    08cf988be2b1d4214812477759bf273e1281d762491d5eb40ed77c95ad701a08fce0d5a67b7d2163389e0efa96422dd535d1062ecb345ac6054688e38eb6e2a0

  • C:\Users\Admin\AppData\Local\Temp\VLC2.exe
    MD5

    e2da4f42475e01f7961ef2fb929de54e

    SHA1

    e57df765da7135d578b29e4619cc395a729eb757

    SHA256

    488c59fddf2db00da7fb4d6589183adc7396edc4233f23eb950aa7191fe4366e

    SHA512

    08cf988be2b1d4214812477759bf273e1281d762491d5eb40ed77c95ad701a08fce0d5a67b7d2163389e0efa96422dd535d1062ecb345ac6054688e38eb6e2a0

  • C:\Users\Admin\AppData\Local\Temp\tmpD72D.tmp.bat
    MD5

    99f9da2623b6adf75ca7525de511b803

    SHA1

    27060e6e224d3059804020e07e05a9bb5c670079

    SHA256

    81bda631224eef2451ca549cd3718b4cb9a276a658d64b9afedb61a83172d273

    SHA512

    16ed9934fcc8e4c08e0ccc1ce275bccad8855bb231fc1e7b0c2a12e916e557d03242007e9b66ef95a89ea4c15144ae5d3892ab3b3e48d0ecf50be54503d4b16f

  • \Users\Admin\AppData\Local\Temp\Icda.exe
    MD5

    bb21f995740d8bc1549d9cbc32874dd8

    SHA1

    8c53b645027362ec97c15735eeb39a12d62c8a74

    SHA256

    9589565f7beb6dccfe4f8424455271bbf810182ea94dacbc8c081577e34a51e1

    SHA512

    608e1871476d3534d9c7bc1951ccc4abbb3056f57d3c64beb1d13b8a453de7b113001c70c0a1728a2776538d464893990a88035b2fb34254f24927e4536ae24b

  • \Users\Admin\AppData\Local\Temp\Icda.exe
    MD5

    bb21f995740d8bc1549d9cbc32874dd8

    SHA1

    8c53b645027362ec97c15735eeb39a12d62c8a74

    SHA256

    9589565f7beb6dccfe4f8424455271bbf810182ea94dacbc8c081577e34a51e1

    SHA512

    608e1871476d3534d9c7bc1951ccc4abbb3056f57d3c64beb1d13b8a453de7b113001c70c0a1728a2776538d464893990a88035b2fb34254f24927e4536ae24b

  • \Users\Admin\AppData\Local\Temp\Rczgwoxvqzh.exe
    MD5

    01475371c9519a0c8f64b7606a0833e0

    SHA1

    58de8246d2910f00ed1d4deabc69cf60d8ddcf8b

    SHA256

    97a5cab2336f3b81f82d7ec85b2f0937ce39d10e512bf0bdade9248d6d1bc682

    SHA512

    9db9f3d2f6db0e1e7154d79b54316a0a54d75bdab327ec248d23f7eed3db54bb00c61c003c92e1b1c38d30eefa6a680cba73b7cf28de3c2181bb82b25e40662f

  • \Users\Admin\AppData\Local\Temp\VLC2.exe
    MD5

    e2da4f42475e01f7961ef2fb929de54e

    SHA1

    e57df765da7135d578b29e4619cc395a729eb757

    SHA256

    488c59fddf2db00da7fb4d6589183adc7396edc4233f23eb950aa7191fe4366e

    SHA512

    08cf988be2b1d4214812477759bf273e1281d762491d5eb40ed77c95ad701a08fce0d5a67b7d2163389e0efa96422dd535d1062ecb345ac6054688e38eb6e2a0

  • memory/336-48-0x0000000072FC0000-0x00000000736AE000-memory.dmp
    Filesize

    6.9MB

  • memory/336-45-0x0000000000000000-mapping.dmp
  • memory/336-47-0x0000000000000000-mapping.dmp
  • memory/336-49-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
    Filesize

    4KB

  • memory/572-34-0x0000000072FC0000-0x00000000736AE000-memory.dmp
    Filesize

    6.9MB

  • memory/572-36-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/572-29-0x0000000000000000-mapping.dmp
  • memory/620-15-0x0000000000000000-mapping.dmp
  • memory/620-21-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp
    Filesize

    9.9MB

  • memory/620-24-0x0000000000F40000-0x0000000000F41000-memory.dmp
    Filesize

    4KB

  • memory/800-38-0x0000000000000000-mapping.dmp
  • memory/1068-2-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1068-3-0x0000000000F30000-0x0000000000F31000-memory.dmp
    Filesize

    4KB

  • memory/1068-5-0x00000000002E0000-0x00000000002EE000-memory.dmp
    Filesize

    56KB

  • memory/1068-6-0x00000000057D0000-0x000000000584D000-memory.dmp
    Filesize

    500KB

  • memory/1540-30-0x0000000072FC0000-0x00000000736AE000-memory.dmp
    Filesize

    6.9MB

  • memory/1540-26-0x0000000000000000-mapping.dmp
  • memory/1540-32-0x0000000001160000-0x0000000001161000-memory.dmp
    Filesize

    4KB

  • memory/1744-20-0x0000000000000000-mapping.dmp
  • memory/1908-41-0x0000000000000000-mapping.dmp
  • memory/1976-39-0x0000000000000000-mapping.dmp
  • memory/2008-7-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

  • memory/2008-8-0x00000000004487CE-mapping.dmp
  • memory/2008-9-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

  • memory/2008-10-0x0000000000400000-0x000000000044E000-memory.dmp
    Filesize

    312KB

  • memory/2008-11-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/2012-42-0x0000000000000000-mapping.dmp