nanocore | ec35cf4e08b2927b3955696b078ee638c20e6fd8d8076727c64addc7e6846668

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03/03/2024, 02:05

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General

Target
be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe
Size 481KB
Sample240303-chtd8sbh89
SHA256 be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10
MD5 6b1adef13c5f6eddb7d995999ba1d406
SHA1 36c4fe44a96bcd5fc383f684f6869891c9369041
SHA512 2143d18609e836476763cd1cf2bb1070317ec521d908dd044a229025f3438cb33631a14705148e62317f75d54e6dd637e5d0004d1b3704a4b9f42b4c12f1dacd
SSDEEP 12288:S2iIrOlwN/jS650PzwHJeq7hIhwtzwHJeq:ZK2Npswpeqoawpeq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

mup830634.duckdns.org:8763

Mutex

f6f15fcb-c3e0-4bc1-8895-8e9f6db35775

Attributes

activate_away_mode
true
backup_connection_host
mup830634.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-10-29T16:40:32.309009436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8763
default_group
MBACK8763
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
f6f15fcb-c3e0-4bc1-8895-8e9f6db35775
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
mup830634.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 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	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4128 set thread context of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
432	RegAsm.exe
432	RegAsm.exe
432	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
432	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	RegAsm.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 432	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	90
PID 4128 wrote to memory of 3248	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	91
PID 4128 wrote to memory of 3248	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	91
PID 4128 wrote to memory of 3248	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	91
PID 4128 wrote to memory of 1520	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	92
PID 4128 wrote to memory of 1520	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	92
PID 4128 wrote to memory of 1520	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	92
PID 4128 wrote to memory of 1136	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	93
PID 4128 wrote to memory of 1136	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	93
PID 4128 wrote to memory of 1136	4128	be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe	93
PID 1520 wrote to memory of 2008	1520	cmd.exe	97
PID 1520 wrote to memory of 2008	1520	cmd.exe	97
PID 1520 wrote to memory of 2008	1520	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe
"C:\Users\Admin\AppData\Local\Temp\be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:432
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Local\Temp\dfcvxx"
  2⤵
  PID:3248
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 10 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\dfcvxx\dfcvxx.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 10 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\dfcvxx\dfcvxx.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:2008
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\be358903e08c518b81313c4cfde845b466a9d638d6924f463b58341274154d10.exe" "C:\Users\Admin\AppData\Local\Temp\dfcvxx\dfcvxx.exe"
  2⤵
  PID:1136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/432-7-0x00000000052D0000-0x0000000005362000-memory.dmp

Download

memory/432-14-0x0000000006080000-0x000000000609E000-memory.dmp

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memory/432-17-0x00000000745D0000-0x0000000074D80000-memory.dmp

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memory/432-3-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/432-6-0x00000000057A0000-0x0000000005D44000-memory.dmp

Download

memory/432-5-0x00000000745D0000-0x0000000074D80000-memory.dmp

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memory/432-11-0x00000000053A0000-0x00000000053AA000-memory.dmp

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memory/432-8-0x0000000005410000-0x00000000054AC000-memory.dmp

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memory/432-15-0x00000000062B0000-0x00000000062BA000-memory.dmp

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memory/432-13-0x0000000005670000-0x000000000567A000-memory.dmp

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memory/4128-0-0x0000000000BD0000-0x0000000000C4E000-memory.dmp

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memory/4128-1-0x00000000745D0000-0x0000000074D80000-memory.dmp

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memory/4128-16-0x00000000745D0000-0x0000000074D80000-memory.dmp

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memory/4128-2-0x0000000002FD0000-0x0000000002FE0000-memory.dmp

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