nanocore | ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-10-2024 15:45

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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

Executes dropped EXE 2 IoCs

Processes:

igfxEM.exeigfxEM.exe

pid	Process
2176	igfxEM.exe
1736	igfxEM.exe

Loads dropped DLL 1 IoCs

Processes:

igfxEM.exe

pid	Process
2176	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
behavioral1/files/0x0007000000016db5-23.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeigfxEM.exeigfxEM.exe

description	pid	Process	procid_target
PID 944 set thread context of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 2176 set thread context of 1796	2176	igfxEM.exe	38
PID 1736 set thread context of 2112	1736	igfxEM.exe	43

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 9 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:

schtasks.exeRegAsm.exeschtasks.exeschtasks.exeigfxEM.exeec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeRegAsm.exeigfxEM.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.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

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

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid	Process
1300	schtasks.exe
2832	schtasks.exe
2028	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid	Process
3040	RegAsm.exe
3040	RegAsm.exe
3040	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid	Process
3040	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	3040	RegAsm.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exeRegAsm.exetaskeng.exeigfxEM.exeigfxEM.exe

description	pid	Process	procid_target
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 944 wrote to memory of 3040	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	31
PID 3040 wrote to memory of 1300	3040	RegAsm.exe	32
PID 3040 wrote to memory of 1300	3040	RegAsm.exe	32
PID 3040 wrote to memory of 1300	3040	RegAsm.exe	32
PID 3040 wrote to memory of 1300	3040	RegAsm.exe	32
PID 944 wrote to memory of 2832	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	34
PID 944 wrote to memory of 2832	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	34
PID 944 wrote to memory of 2832	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	34
PID 944 wrote to memory of 2832	944	ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe	34
PID 2700 wrote to memory of 2176	2700	taskeng.exe	37
PID 2700 wrote to memory of 2176	2700	taskeng.exe	37
PID 2700 wrote to memory of 2176	2700	taskeng.exe	37
PID 2700 wrote to memory of 2176	2700	taskeng.exe	37
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 1796	2176	igfxEM.exe	38
PID 2176 wrote to memory of 2028	2176	igfxEM.exe	39
PID 2176 wrote to memory of 2028	2176	igfxEM.exe	39
PID 2176 wrote to memory of 2028	2176	igfxEM.exe	39
PID 2176 wrote to memory of 2028	2176	igfxEM.exe	39
PID 2700 wrote to memory of 1736	2700	taskeng.exe	42
PID 2700 wrote to memory of 1736	2700	taskeng.exe	42
PID 2700 wrote to memory of 1736	2700	taskeng.exe	42
PID 2700 wrote to memory of 1736	2700	taskeng.exe	42
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43
PID 1736 wrote to memory of 2112	1736	igfxEM.exe	43

C:\Users\Admin\AppData\Local\Temp\ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe
"C:\Users\Admin\AppData\Local\Temp\ec056f78952b9f467a03740f0f70cc96b4739a625a8f418dc947358bf466f9a5N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:944
- 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:3040
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpED0D.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1300
- 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:2832

C:\Windows\system32\taskeng.exe
taskeng.exe {7552B309-6CC3-46B3-A16C-EA635D8AB3F8} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1796
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2028
- C:\Users\Admin\WinSAT\igfxEM.exe
  C:\Users\Admin\WinSAT\igfxEM.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - 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

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\tmpED0D.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

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

Filesize
1.4MB

MD5
560bb615c7de76d30c825854e4b84c09

SHA1
6de84289d41b77f3e09440c8367ea1837fa1dcb5

SHA256
bb9944660e692a0d93084aee16245c31c0a2b7c0618baeeee0940a7bcfe7fc85

SHA512
e173d1dde7abec6724bb50e8f441a0ec3f27f04ea55dc9601b8c7094f6ca1cb467fa9f65dd79e473244b459126e6d4c27d5ed3634d91e81dac81f076e04fc59c

Download Submit
C:\Users\Admin\azroles.lnk

Filesize
719B

MD5
42dea1331ee8a83bddfd0b56484e54a9

SHA1
d3d471e9e6887ae56c7d80e62b6a445170e93bea

SHA256
86ce08eb87d23aad30a25468cc958718f75a3b31666c0673eda87330688baa9e

SHA512
b6f4fbaf84a28ede396814d239243d38391d013810f8966f5e54317393b319b01226a0cad1d70d50be7e2ea3872e6caa021e626492548476500744b24b99c27c

Download Submit
memory/944-0-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/1796-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3040-11-0x0000000073D72000-0x0000000073D74000-memory.dmp

Filesize
8KB

Download
memory/3040-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3040-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3040-16-0x0000000073D70000-0x000000007431B000-memory.dmp

Filesize
5.7MB

Download
memory/3040-17-0x0000000073D72000-0x0000000073D74000-memory.dmp

Filesize
8KB

Download
memory/3040-18-0x0000000073D70000-0x000000007431B000-memory.dmp

Filesize
5.7MB

Download
memory/3040-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3040-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download