nanocore | b45743e3d62029c7b99dd74e158bd2cc031177b6a2e748e71c25897a7d2959af

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 19:08

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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

Executes dropped EXE 6 IoCs

pid	Process
1784	Syskey.exe
2992	Syskey.exe
1692	Syskey.exe
2344	Syskey.exe
1604	Syskey.exe
576	Syskey.exe

Loads dropped DLL 2 IoCs

pid	Process
1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe
1784	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\UDP Service = "C:\\Program Files (x86)\\UDP Service\\udpsv.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 1784 set thread context of 2992	1784	Syskey.exe	32
PID 1692 set thread context of 2344	1692	Syskey.exe	39
PID 1604 set thread context of 576	1604	Syskey.exe	41

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\UDP Service\udpsv.exe	Syskey.exe
File opened for modification	C:\Program Files (x86)\UDP Service\udpsv.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	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	Syskey.exe
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	schtasks.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
2488	schtasks.exe
3068	schtasks.exe
1732	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	Syskey.exe
2992	Syskey.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2992	Syskey.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	Syskey.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 1732	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	29
PID 1292 wrote to memory of 1732	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	29
PID 1292 wrote to memory of 1732	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	29
PID 1292 wrote to memory of 1732	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	29
PID 1292 wrote to memory of 1784	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	31
PID 1292 wrote to memory of 1784	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	31
PID 1292 wrote to memory of 1784	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	31
PID 1292 wrote to memory of 1784	1292	ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe	31
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 1784 wrote to memory of 2992	1784	Syskey.exe	32
PID 2992 wrote to memory of 2488	2992	Syskey.exe	33
PID 2992 wrote to memory of 2488	2992	Syskey.exe	33
PID 2992 wrote to memory of 2488	2992	Syskey.exe	33
PID 2992 wrote to memory of 2488	2992	Syskey.exe	33
PID 2992 wrote to memory of 3068	2992	Syskey.exe	35
PID 2992 wrote to memory of 3068	2992	Syskey.exe	35
PID 2992 wrote to memory of 3068	2992	Syskey.exe	35
PID 2992 wrote to memory of 3068	2992	Syskey.exe	35
PID 316 wrote to memory of 1692	316	taskeng.exe	38
PID 316 wrote to memory of 1692	316	taskeng.exe	38
PID 316 wrote to memory of 1692	316	taskeng.exe	38
PID 316 wrote to memory of 1692	316	taskeng.exe	38
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 1692 wrote to memory of 2344	1692	Syskey.exe	39
PID 316 wrote to memory of 1604	316	taskeng.exe	40
PID 316 wrote to memory of 1604	316	taskeng.exe	40
PID 316 wrote to memory of 1604	316	taskeng.exe	40
PID 316 wrote to memory of 1604	316	taskeng.exe	40
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41
PID 1604 wrote to memory of 576	1604	Syskey.exe	41

C:\Users\Admin\AppData\Local\Temp\ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe
"C:\Users\Admin\AppData\Local\Temp\ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1292
- 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:1732
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1784
- - 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:2992
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA479.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2488
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA4D8.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3068

C:\Windows\system32\taskeng.exe
taskeng.exe {07C05498-C5BA-41BD-84EC-F6C64876F2BD} S-1-5-21-1506706701-1246725540-2219210854-1000:MUYDDIIS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:316
- 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:1692
- - C:\Users\Admin\AppData\Roaming\Syskey.exe
    "C:\Users\Admin\AppData\Roaming\Syskey.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2344
- 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:1604
- - C:\Users\Admin\AppData\Roaming\Syskey.exe
    "C:\Users\Admin\AppData\Roaming\Syskey.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:576

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

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\Temp\tmpA479.tmp

Filesize
1KB

MD5
3c23c156cbe7ced9d36c5a406c3cef29

SHA1
9854460889c34869851443e4ad6eee07708e5097

SHA256
33fd5137828c11e419032022c9a22d8a74a90de28dd19697aa9c0c3060b0541e

SHA512
1dc4d1421c2b41ee1e4dd45e733343ff46003ce7d006f8789770e150f51d5ee283970062da41703e4a79a5d73e855f6604c09b5babde60f65f9ac274c49d2fc2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA4D8.tmp

Filesize
1KB

MD5
0a24db62cb5b84309c4803346caaa25d

SHA1
67660778f61bb44168c33ed3fe56ed86cf9583e8

SHA256
38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

SHA512
d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

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

Filesize
420KB

MD5
b5eed3811698ace36ce46d3f4a5796e2

SHA1
004f4192b26afd94b49eff499a0b967b2f8fab35

SHA256
ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818

SHA512
7fd336f878e8d68dc5916c7ef87c5628b7bbea63f8c3f0b830df2c9d70956e48ba05f47442b368133b43d2972642c4d90181f786d6f872671fa2fe3cc9e4b8de

Download Submit
memory/1292-1-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1292-0-0x000000007495E000-0x000000007495F000-memory.dmp

Filesize
4KB

Download
memory/1784-27-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/1784-9-0x0000000001F90000-0x0000000001FAC000-memory.dmp

Filesize
112KB

Download
memory/1784-28-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-53-0x0000000000440000-0x00000000004A7000-memory.dmp

Filesize
412KB

Download
memory/2992-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2992-36-0x00000000048C0000-0x00000000048CA000-memory.dmp

Filesize
40KB

Download
memory/2992-37-0x0000000005520000-0x000000000553E000-memory.dmp

Filesize
120KB

Download
memory/2992-38-0x0000000005540000-0x000000000554A000-memory.dmp

Filesize
40KB

Download
memory/2992-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download