Analysis

  • max time kernel
    100s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2022 15:56

General

  • Target

    Payment Invoice.exe

  • Size

    875KB

  • MD5

    2a7f904046d84e1e7357e1e2a25c4d6a

  • SHA1

    21295c64773194b68011c56239d2f2eaff1bad84

  • SHA256

    5dd503490af8829d84dcf61f1b829b3a26eb0f9fdf807b49d9b606cd6e2ff974

  • SHA512

    5c9e981427fc57aa40a6742fe21bf79b7f84ffaf032a9905d32c960b24566a64ad32753c2688e04221bbe4f4d7016df03e5c25340a3245cea1cb1d3b4d29ff81

  • SSDEEP

    12288:tFnv6yVmzuaXM8FZF61P+XLoykU6hfWxvWVpPOBJl7qZIm:jd0zlzFpkykUmuKPwi

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

story.servepics.com:22

85.31.46.207:22

Attributes
activate_away_mode
true
backup_connection_host
85.31.46.207
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-07-01T16:11:50.181051836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
22
default_group
Blessed
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
cd820fe9-0080-4a6b-9ac2-42543933ee09
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
story.servepics.com
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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.

  • Checks whether UAC is enabled ⋅ 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext ⋅ 1 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses ⋅ 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam ⋅ 1 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe"
    Suspicious use of SetThreadContext
    Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe"
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1320
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\edRwRca.exe"
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1280
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\edRwRca" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD24E.tmp"
      Creates scheduled task(s)
      PID:2004
    • C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe"
      Checks whether UAC is enabled
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      PID:1632

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                    Privilege Escalation

                      Replay Monitor

                      00:00 00:00

                      Downloads

                      • C:\Users\Admin\AppData\Local\Temp\tmpD24E.tmp
                        MD5

                        e9ff3045a6da106be4898913bf389e05

                        SHA1

                        b316eb9400bbbabee226f64d0691ee0a5efb61af

                        SHA256

                        ebbb5533d5b918de8a2a2c100df02bc217677585abc1657116938544a28f2a9b

                        SHA512

                        7ce259f7bfe5e2e98142f1544a1d11dc6d54cda68a5b59eceab15fc12147bf5b00ef0859dde39520f02284b9bf944d73bb4a622c8bf46c86dc1f363091ff439f

                      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
                        MD5

                        cbf923fb744d1f2e70c3b50e79fbbf27

                        SHA1

                        a1f9c955d8b8b6953fd9c2d86e3c32a0a07df806

                        SHA256

                        c49ca7b2a1c9ee2a52c385b1357eb4ac28b3f6de7c9eaa17ef27fdf39b3786fa

                        SHA512

                        e173373bd070caa2c9296a8d16217097a1831e17874cfe3fcb92053c7c958187527d9bc284b5316d76059140d48dcd8917a7510014d30d6eceb1aa5f195ff3ae

                      • memory/1280-90-0x000000006F2A0000-0x000000006F84B000-memory.dmp
                      • memory/1280-83-0x000000006F2A0000-0x000000006F84B000-memory.dmp
                      • memory/1280-61-0x0000000000000000-mapping.dmp
                      • memory/1320-88-0x000000006F2A0000-0x000000006F84B000-memory.dmp
                      • memory/1320-84-0x000000006F2A0000-0x000000006F84B000-memory.dmp
                      • memory/1320-59-0x0000000000000000-mapping.dmp
                      • memory/1632-78-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-85-0x00000000009B0000-0x00000000009C2000-memory.dmp
                      • memory/1632-97-0x0000000000FA0000-0x0000000000FCE000-memory.dmp
                      • memory/1632-67-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-68-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-70-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-71-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-73-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-74-0x000000000041E792-mapping.dmp
                      • memory/1632-76-0x0000000000400000-0x0000000000438000-memory.dmp
                      • memory/1632-98-0x0000000000F40000-0x0000000000F54000-memory.dmp
                      • memory/1632-80-0x0000000000910000-0x000000000091A000-memory.dmp
                      • memory/1632-81-0x0000000000980000-0x000000000099E000-memory.dmp
                      • memory/1632-82-0x0000000000920000-0x000000000092A000-memory.dmp
                      • memory/1632-96-0x0000000000F20000-0x0000000000F2E000-memory.dmp
                      • memory/1632-95-0x0000000000CF0000-0x0000000000D04000-memory.dmp
                      • memory/1632-86-0x0000000000A10000-0x0000000000A2A000-memory.dmp
                      • memory/1632-94-0x0000000000B60000-0x0000000000B70000-memory.dmp
                      • memory/1632-93-0x0000000000B50000-0x0000000000B64000-memory.dmp
                      • memory/1632-87-0x0000000000AF0000-0x0000000000AFE000-memory.dmp
                      • memory/1632-92-0x0000000000B40000-0x0000000000B4C000-memory.dmp
                      • memory/1632-89-0x0000000000B20000-0x0000000000B32000-memory.dmp
                      • memory/1632-91-0x0000000000B30000-0x0000000000B3E000-memory.dmp
                      • memory/1964-55-0x0000000076411000-0x0000000076413000-memory.dmp
                      • memory/1964-56-0x0000000000440000-0x0000000000456000-memory.dmp
                      • memory/1964-57-0x0000000000450000-0x000000000045C000-memory.dmp
                      • memory/1964-58-0x0000000007D10000-0x0000000007DA4000-memory.dmp
                      • memory/1964-54-0x0000000000FE0000-0x00000000010C0000-memory.dmp
                      • memory/1964-66-0x0000000004C70000-0x0000000004CAA000-memory.dmp
                      • memory/2004-62-0x0000000000000000-mapping.dmp