Analysis

  • max time kernel
    80s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2022 08:06

General

  • Target

    SecuriteInfo.com.Win32.PWSX-gen.10719.exe

  • Size

    747KB

  • MD5

    af42b0292f68c682ee25ebeeeed252f1

  • SHA1

    c5cbd951d312ff199fe96bf66d10fb6432b60538

  • SHA256

    5f203844e8cb82ad24fcef815c4fcb03fa14789663e8fa83b459e6f1f1852f27

  • SHA512

    d2264f4f63800519ce59df43cea2329ae615e90abb282fe50caff91c3db520de3f3d466748af4ff4dc8e14474743717da26430d45ea86c9d394f5e06ecc2bfea

  • SSDEEP

    12288:uHTxVKKXlj5wM67OVKPBf2dbL+RlIgcFP3gZVkkHOrK:e/xmPBUeRlIDKKkHO

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Attributes
activate_away_mode
true
backup_connection_host
194,147,5,75
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-04-29T03:26:40.572298236Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5899
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
b8aebc29-8c64-444f-99e6-dc4122e9bbfc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brewsterchristophe.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.

  • 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
  • Enumerates physical storage devices ⋅ 1 TTPs

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

  • Creates scheduled task(s) ⋅ 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses ⋅ 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam ⋅ 1 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.10719.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.10719.exe"
    Suspicious use of SetThreadContext
    Suspicious use of WriteProcessMemory
    PID:1872
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NFjJzBjHKAes" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB194.tmp"
      Creates scheduled task(s)
      PID:1636
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.10719.exe
      "{path}"
      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:1680
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB78D.tmp"
        Creates scheduled task(s)
        PID:1364
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB8A7.tmp"
        Creates scheduled task(s)
        PID:1760

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

        Execution

          Exfiltration

            Impact

              Initial Access

                Lateral Movement

                  Privilege Escalation

                    Replay Monitor

                    00:00 00:00

                    Downloads

                    • C:\Users\Admin\AppData\Local\Temp\tmpB194.tmp
                      MD5

                      eddb37a1cf3fcc89f95d5a198fb9ab35

                      SHA1

                      8abbc5047ce98bbf6dbc5b2a0a22f5444922ddb9

                      SHA256

                      670f93b230e0423e45862f14ed9086901dd3d94052718a7299f53aa782bc580e

                      SHA512

                      c10644c5ba60f5e5d62e9a2b1719f29bc762928899256a0b3544feb9d95909cd6d5a37ee3944008752d2ee4000f64a20a81e3ddc0789c456662f6600e6ff8f28

                    • C:\Users\Admin\AppData\Local\Temp\tmpB78D.tmp
                      MD5

                      80e1e6028a0c057f65d6069635a6d588

                      SHA1

                      f923f8bf361ca483437c0699d22e91c25a04d80c

                      SHA256

                      db23555b47d3b79a7e0e3d6d69cc3bb2ea4db771b47d2cf9fbc7778e2cda7e69

                      SHA512

                      b9808938234f20b4653469a80f97bbc5d400fe809dac6da52a758b529f30ce08493615908f62288896108bacebddaf471afb81ec9f515f284db8f64fac79b8de

                    • C:\Users\Admin\AppData\Local\Temp\tmpB8A7.tmp
                      MD5

                      0a24db62cb5b84309c4803346caaa25d

                      SHA1

                      67660778f61bb44168c33ed3fe56ed86cf9583e8

                      SHA256

                      38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

                      SHA512

                      d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

                    • memory/1364-74-0x0000000000000000-mapping.dmp
                    • memory/1636-59-0x0000000000000000-mapping.dmp
                    • memory/1680-62-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-79-0x0000000000980000-0x000000000099E000-memory.dmp
                    • memory/1680-61-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-92-0x00000000010D0000-0x00000000010E4000-memory.dmp
                    • memory/1680-64-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-65-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-67-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-68-0x000000000041E792-mapping.dmp
                    • memory/1680-70-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-72-0x0000000000400000-0x0000000000438000-memory.dmp
                    • memory/1680-91-0x00000000048C0000-0x00000000048EE000-memory.dmp
                    • memory/1680-90-0x00000000010B0000-0x00000000010BE000-memory.dmp
                    • memory/1680-89-0x0000000001060000-0x0000000001074000-memory.dmp
                    • memory/1680-88-0x0000000001050000-0x0000000001060000-memory.dmp
                    • memory/1680-78-0x0000000000720000-0x000000000072A000-memory.dmp
                    • memory/1680-87-0x0000000001000000-0x0000000001014000-memory.dmp
                    • memory/1680-80-0x0000000000730000-0x000000000073A000-memory.dmp
                    • memory/1680-81-0x0000000000DF0000-0x0000000000E02000-memory.dmp
                    • memory/1680-82-0x0000000000E40000-0x0000000000E5A000-memory.dmp
                    • memory/1680-83-0x0000000000E70000-0x0000000000E7E000-memory.dmp
                    • memory/1680-84-0x0000000000E90000-0x0000000000EA2000-memory.dmp
                    • memory/1680-85-0x0000000000EE0000-0x0000000000EEE000-memory.dmp
                    • memory/1680-86-0x0000000000FF0000-0x0000000000FFC000-memory.dmp
                    • memory/1760-76-0x0000000000000000-mapping.dmp
                    • memory/1872-58-0x0000000000C70000-0x0000000000CAA000-memory.dmp
                    • memory/1872-55-0x0000000075841000-0x0000000075843000-memory.dmp
                    • memory/1872-56-0x0000000000970000-0x0000000000990000-memory.dmp
                    • memory/1872-57-0x0000000005E40000-0x0000000005ECA000-memory.dmp
                    • memory/1872-54-0x00000000010E0000-0x00000000011A0000-memory.dmp