nanocore | 074a43f2b2bcfe46a0ad168e710ed220c63fa8806771a4e2bd7f18bef315d797

Analysis

max time kernel
146s
max time network
149s
platform
windows7_x64
resource
win7-en-20211208
submitted
22/12/2021, 02:58

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General

Target
9ba99137bae40757c4080588edb7e5ba.exe
Size 581KB
Sample211222-df63zsehc8
SHA256 074a43f2b2bcfe46a0ad168e710ed220c63fa8806771a4e2bd7f18bef315d797
MD5 9ba99137bae40757c4080588edb7e5ba
SHA1 c310ec28683690cd13ef4fa23ab1546802500a42
SHA512 095cfbd7604ab69d3139445b24f0c7a54b54dfe754f66e87653017afdffdc01655838acf6032e9351fce8f0e4fd4249c209ee1dd98118fe52409abbc71c99f29
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

mek123.ddns.net:2486
2.56.56.117:2486

Mutex

f82b3327-1077-4269-9799-c7a50938b580

Attributes

activate_away_mode
true
backup_connection_host
2.56.56.117
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-09-17T22:53:37.785666336Z
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
2486
default_group
mek123.ddns.net
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
f82b3327-1077-4269-9799-c7a50938b580
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
mek123.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SAAS Monitor = "C:\\Program Files (x86)\\SAAS Monitor\\saasmon.exe"	9ba99137bae40757c4080588edb7e5ba.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	9ba99137bae40757c4080588edb7e5ba.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 612 set thread context of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	9ba99137bae40757c4080588edb7e5ba.exe
File opened for modification	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	9ba99137bae40757c4080588edb7e5ba.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1840	schtasks.exe
624	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1252	9ba99137bae40757c4080588edb7e5ba.exe
1252	9ba99137bae40757c4080588edb7e5ba.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1252	9ba99137bae40757c4080588edb7e5ba.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1252	9ba99137bae40757c4080588edb7e5ba.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 612 wrote to memory of 1252	612	9ba99137bae40757c4080588edb7e5ba.exe	27
PID 1252 wrote to memory of 1840	1252	9ba99137bae40757c4080588edb7e5ba.exe	28
PID 1252 wrote to memory of 1840	1252	9ba99137bae40757c4080588edb7e5ba.exe	28
PID 1252 wrote to memory of 1840	1252	9ba99137bae40757c4080588edb7e5ba.exe	28
PID 1252 wrote to memory of 1840	1252	9ba99137bae40757c4080588edb7e5ba.exe	28
PID 1252 wrote to memory of 624	1252	9ba99137bae40757c4080588edb7e5ba.exe	30
PID 1252 wrote to memory of 624	1252	9ba99137bae40757c4080588edb7e5ba.exe	30
PID 1252 wrote to memory of 624	1252	9ba99137bae40757c4080588edb7e5ba.exe	30
PID 1252 wrote to memory of 624	1252	9ba99137bae40757c4080588edb7e5ba.exe	30

C:\Users\Admin\AppData\Local\Temp\9ba99137bae40757c4080588edb7e5ba.exe
"C:\Users\Admin\AppData\Local\Temp\9ba99137bae40757c4080588edb7e5ba.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:612
- C:\Users\Admin\AppData\Local\Temp\9ba99137bae40757c4080588edb7e5ba.exe
  "C:\Users\Admin\AppData\Local\Temp\9ba99137bae40757c4080588edb7e5ba.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1252
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SAAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp74C3.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1840
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SAAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp78C9.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/612-54-0x0000000000340000-0x0000000000341000-memory.dmp

Download

memory/612-56-0x00000000073A0000-0x00000000073A1000-memory.dmp

Download

memory/612-57-0x0000000000330000-0x0000000000336000-memory.dmp

Download

memory/612-58-0x0000000004BC0000-0x0000000004C26000-memory.dmp

Download

memory/1252-62-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1252-63-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1252-65-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1252-67-0x0000000004E70000-0x0000000004E71000-memory.dmp

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memory/1252-61-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1252-60-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1252-59-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1252-72-0x00000000004B0000-0x00000000004B5000-memory.dmp

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memory/1252-73-0x00000000004C0000-0x00000000004D9000-memory.dmp

Download

memory/1252-74-0x00000000004E0000-0x00000000004E3000-memory.dmp

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