nanocore | b45743e3d62029c7b99dd74e158bd2cc031177b6a2e748e71c25897a7d2959af

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-09-2024 13:46

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General

Target

ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe
Size

420KB
MD5

b5eed3811698ace36ce46d3f4a5796e2
SHA1

004f4192b26afd94b49eff499a0b967b2f8fab35
SHA256

ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818
SHA512

7fd336f878e8d68dc5916c7ef87c5628b7bbea63f8c3f0b830df2c9d70956e48ba05f47442b368133b43d2972642c4d90181f786d6f872671fa2fe3cc9e4b8de
SSDEEP

6144:8i+ATS2Jx/65A4tA9M+iz2BnG1G0woaXlAKeklbRVjprl6+oSwnlee:eAxjaoxizWG1GCwlKQbRVj1lule

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

purified.ddns.net:4448

127.0.0.1:4448

Mutex

372d7a09-8663-442e-aacf-afa78b1f6fb0

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-05-02T14:06:18.122673636Z
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
4448
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
372d7a09-8663-442e-aacf-afa78b1f6fb0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
purified.ddns.net
primary_dns_server
8.8.8.8
request_elevation
false
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.
keylogger trojan stealer spyware nanocore

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe

Executes dropped EXE 6 IoCs

pid	Process
4040	Syskey.exe
4616	Syskey.exe
3656	Syskey.exe
640	Syskey.exe
1644	Syskey.exe
3640	Syskey.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe"	Syskey.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Syskey.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4040 set thread context of 4616	4040	Syskey.exe	89
PID 3656 set thread context of 640	3656	Syskey.exe	104
PID 1644 set thread context of 3640	1644	Syskey.exe	106

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	Syskey.exe
File opened for modification	C:\Program Files (x86)\DPI Subsystem\dpiss.exe	Syskey.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Syskey.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1984	schtasks.exe
228	schtasks.exe
1720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4616	Syskey.exe
4616	Syskey.exe
4616	Syskey.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4616	Syskey.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4616	Syskey.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 1984	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	85
PID 4076 wrote to memory of 1984	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	85
PID 4076 wrote to memory of 1984	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	85
PID 4076 wrote to memory of 4040	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	88
PID 4076 wrote to memory of 4040	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	88
PID 4076 wrote to memory of 4040	4076	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	88
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4040 wrote to memory of 4616	4040	Syskey.exe	89
PID 4616 wrote to memory of 228	4616	Syskey.exe	90
PID 4616 wrote to memory of 228	4616	Syskey.exe	90
PID 4616 wrote to memory of 228	4616	Syskey.exe	90
PID 4616 wrote to memory of 1720	4616	Syskey.exe	92
PID 4616 wrote to memory of 1720	4616	Syskey.exe	92
PID 4616 wrote to memory of 1720	4616	Syskey.exe	92
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 3656 wrote to memory of 640	3656	Syskey.exe	104
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106
PID 1644 wrote to memory of 3640	1644	Syskey.exe	106

C:\Users\Admin\AppData\Local\Temp\ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe
"C:\Users\Admin\AppData\Local\Temp\ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc minute /mo 1 /tn "'ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818'" /tr "'C:\Users\Admin\AppData\Roaming\Syskey.exe'"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1984
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Users\Admin\AppData\Roaming\Syskey.exe
    "C:\Users\Admin\AppData\Roaming\Syskey.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4616
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCF27.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:228
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCF86.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1720

C:\Users\Admin\AppData\Roaming\Syskey.exe
C:\Users\Admin\AppData\Roaming\Syskey.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:640

C:\Users\Admin\AppData\Roaming\Syskey.exe
C:\Users\Admin\AppData\Roaming\Syskey.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Syskey.exe.log

Filesize
617B

MD5
5edc2e3aa8d28fcb8f79eca8cdf31f6d

SHA1
ca95b41ba4198727346bcff3bc8fc43ae31a52cd

SHA256
035038588c974bc791a2dfd1eb7ac9c48db6911910618221f60ad9b5420325ed

SHA512
941a1b928f3cc5e348bbb646e41072e14ce526c71b11731556031ac98bfd325b0252b05559983577fc39ee96d2ea45143523ccd3062c694e3539441133c0a6d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCF27.tmp

Filesize
1KB

MD5
3c23c156cbe7ced9d36c5a406c3cef29

SHA1
9854460889c34869851443e4ad6eee07708e5097

SHA256
33fd5137828c11e419032022c9a22d8a74a90de28dd19697aa9c0c3060b0541e

SHA512
1dc4d1421c2b41ee1e4dd45e733343ff46003ce7d006f8789770e150f51d5ee283970062da41703e4a79a5d73e855f6604c09b5babde60f65f9ac274c49d2fc2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCF86.tmp

Filesize
1KB

MD5
5fea24e883e06e4df6d240dc72abf2c5

SHA1
d778bf0f436141e02df4b421e8188abdcc9a84a4

SHA256
e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

SHA512
15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

Download Submit
C:\Users\Admin\AppData\Roaming\Syskey.exe

Filesize
420KB

MD5
b5eed3811698ace36ce46d3f4a5796e2

SHA1
004f4192b26afd94b49eff499a0b967b2f8fab35

SHA256
ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818

SHA512
7fd336f878e8d68dc5916c7ef87c5628b7bbea63f8c3f0b830df2c9d70956e48ba05f47442b368133b43d2972642c4d90181f786d6f872671fa2fe3cc9e4b8de

Download Submit
memory/4040-16-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4040-17-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4040-18-0x00000000048A0000-0x00000000048BC000-memory.dmp

Filesize
112KB

Download
memory/4040-23-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4076-2-0x00000000049C0000-0x0000000004A5C000-memory.dmp

Filesize
624KB

Download
memory/4076-0-0x0000000074AFE000-0x0000000074AFF000-memory.dmp

Filesize
4KB

Download
memory/4076-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/4076-3-0x0000000004B80000-0x0000000005124000-memory.dmp

Filesize
5.6MB

Download
memory/4616-26-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4616-25-0x0000000004EC0000-0x0000000004F52000-memory.dmp

Filesize
584KB

Download
memory/4616-27-0x00000000048D0000-0x00000000048DA000-memory.dmp

Filesize
40KB

Download
memory/4616-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4616-24-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4616-35-0x0000000005330000-0x000000000533A000-memory.dmp

Filesize
40KB

Download
memory/4616-36-0x0000000005A40000-0x0000000005A5E000-memory.dmp

Filesize
120KB

Download
memory/4616-37-0x0000000005B80000-0x0000000005B8A000-memory.dmp

Filesize
40KB

Download
memory/4616-38-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download
memory/4616-39-0x0000000074AF0000-0x00000000752A0000-memory.dmp

Filesize
7.7MB

Download