nanocore | ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-10-2024 15:47

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General

Target

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe
Size

1.4MB
MD5

efc521e6f288f225af4d3cc8fcb445f0
SHA1

b6913be5783c7a3ce919dd7c367141fbb39da1c7
SHA256

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5
SHA512

32b7da7549fff982ce50cf9ecc2a204199b71c1dda6282fe63151981782e98774cd2bff7d57cb8472e3782e0d71e38e650508b1af8dd54b57052eddcae58e2f4
SSDEEP

24576:6AHnh+eWsN3skA4RV1Hom2KXMmHaYDBNkmBRGEMdSR5ADIAsG/jJ45N:Nh+ZkldoPK8YaZSeIAmN

Score

10^/10

nanocore discovery evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

bnow.duckdns.org:4156

Mutex

fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb

Attributes

activate_away_mode
true
backup_connection_host
bnow.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-08-20T04:39:27.808758936Z
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
4156
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
fc4000c4-f8ec-42dc-a0ad-1edfd7548ceb
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
bnow.duckdns.org
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.
keylogger trojan stealer spyware nanocore

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeigfxEM.exeigfxEM.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	igfxEM.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	igfxEM.exe

Executes dropped EXE 3 IoCs

Processes:

igfxEM.exeigfxEM.exeigfxEM.exe

pid	Process
3584	igfxEM.exe
3532	igfxEM.exe
4100	igfxEM.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RegAsm.exe

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

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/files/0x0007000000023cce-19.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeigfxEM.exeigfxEM.exeigfxEM.exe

description	pid	Process	procid_target
PID 4456 set thread context of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 3584 set thread context of 1476	3584	igfxEM.exe	100
PID 3532 set thread context of 3936	3532	igfxEM.exe	108
PID 4100 set thread context of 2112	4100	igfxEM.exe	123

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 12 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

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeschtasks.exeschtasks.exeigfxEM.exeRegAsm.exeschtasks.exeschtasks.exeigfxEM.exeRegAsm.exeigfxEM.exeRegAsm.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.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	igfxEM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	igfxEM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxEM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid	Process
1088	schtasks.exe
1424	schtasks.exe
4284	schtasks.exe
2976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid	Process
3368	RegAsm.exe
3368	RegAsm.exe
3368	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid	Process
3368	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	3368	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeRegAsm.exeigfxEM.exeigfxEM.exeigfxEM.exe

description	pid	Process	procid_target
PID 4456 wrote to memory of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 4456 wrote to memory of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 4456 wrote to memory of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 4456 wrote to memory of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 4456 wrote to memory of 3368	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	87
PID 3368 wrote to memory of 1088	3368	RegAsm.exe	88
PID 3368 wrote to memory of 1088	3368	RegAsm.exe	88
PID 3368 wrote to memory of 1088	3368	RegAsm.exe	88
PID 4456 wrote to memory of 1424	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	97
PID 4456 wrote to memory of 1424	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	97
PID 4456 wrote to memory of 1424	4456	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	97
PID 3584 wrote to memory of 1476	3584	igfxEM.exe	100
PID 3584 wrote to memory of 1476	3584	igfxEM.exe	100
PID 3584 wrote to memory of 1476	3584	igfxEM.exe	100
PID 3584 wrote to memory of 1476	3584	igfxEM.exe	100
PID 3584 wrote to memory of 1476	3584	igfxEM.exe	100
PID 3584 wrote to memory of 4284	3584	igfxEM.exe	104
PID 3584 wrote to memory of 4284	3584	igfxEM.exe	104
PID 3584 wrote to memory of 4284	3584	igfxEM.exe	104
PID 3532 wrote to memory of 3936	3532	igfxEM.exe	108
PID 3532 wrote to memory of 3936	3532	igfxEM.exe	108
PID 3532 wrote to memory of 3936	3532	igfxEM.exe	108
PID 3532 wrote to memory of 3936	3532	igfxEM.exe	108
PID 3532 wrote to memory of 3936	3532	igfxEM.exe	108
PID 3532 wrote to memory of 2976	3532	igfxEM.exe	113
PID 3532 wrote to memory of 2976	3532	igfxEM.exe	113
PID 3532 wrote to memory of 2976	3532	igfxEM.exe	113
PID 4100 wrote to memory of 2112	4100	igfxEM.exe	123
PID 4100 wrote to memory of 2112	4100	igfxEM.exe	123
PID 4100 wrote to memory of 2112	4100	igfxEM.exe	123
PID 4100 wrote to memory of 2112	4100	igfxEM.exe	123
PID 4100 wrote to memory of 2112	4100	igfxEM.exe	123

C:\Users\Admin\AppData\Local\Temp\ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe
"C:\Users\Admin\AppData\Local\Temp\ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3368
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "PCI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC18B.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1088
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1424

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4284

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn azroles /tr "C:\Users\Admin\WinSAT\igfxEM.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2976

C:\Users\Admin\WinSAT\igfxEM.exe
C:\Users\Admin\WinSAT\igfxEM.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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_v2.0_32\UsageLogs\RegAsm.exe.log

Filesize
496B

MD5
5b4789d01bb4d7483b71e1a35bce6a8b

SHA1
de083f2131c9a763c0d1810c97a38732146cffbf

SHA256
e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6

SHA512
357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC18B.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\WinSAT\igfxEM.exe

Filesize
1.4MB

MD5
2be77a7d8799e29011f898990caa401e

SHA1
86f4d8fe41c824c1a7f067668048cfbeead2cd31

SHA256
d947bb8af6e15f292e350b4faffd5a460ef6598e0313138a4caaca1864ae0aa8

SHA512
a37200782e617a98b5dc6f9c5a6358579f4cda275fd7ab16420787fe0c564f2f634f5719ec27bc0f59f501608229c5118dea26acb5db32095bb58ccf6a7a99d7

Download Submit
\??\PIPE\srvsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1476-21-0x00000000001C0000-0x00000000001F8000-memory.dmp

Filesize
224KB

Download
memory/3368-7-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/3368-13-0x0000000074382000-0x0000000074383000-memory.dmp

Filesize
4KB

Download
memory/3368-14-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/3368-15-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/3368-8-0x0000000074380000-0x0000000074931000-memory.dmp

Filesize
5.7MB

Download
memory/3368-6-0x0000000074382000-0x0000000074383000-memory.dmp

Filesize
4KB

Download
memory/3368-2-0x0000000000700000-0x0000000000738000-memory.dmp

Filesize
224KB

Download
memory/3936-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4456-0-0x00000000035E0000-0x00000000035E1000-memory.dmp

Filesize
4KB

Download