nanocore | c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718

General

Target

INV 6821202304080001.pdf.exe
Size

2.2MB
MD5

5544f709f499a2179dc8bfa0febef190
SHA1

bfe3a5b530af40d4a679f3a0f271a2c8fc3bebda
SHA256

c0ee259c92c30dcd710e13a44ec8899aa527998ab2431d1e4cb1de94db939718
SHA512

eec0b7c5a48667d2d429e7dfe3b1e5f21e9342c91b4d06915eb57b82b2a14ef1963ed9ba6baa12f0b9a61470fdbc4820faff613d5c057f6fb1c1de397fbcf867
SSDEEP

24576:bBPTrfgGiX5jCqC/twlR0egPHcKkZLKbarxflAGezUFj1ttCq63a7fUL3t6NxKmn:prwX5jHOODAZzojrtCGdXr

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

152.89.218.40:54984

127.0.0.1:54984

Mutex

18aadcbc-eacf-42f0-9f04-a9a6fe5a3fd3

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-01-21T21:54:55.670767736Z
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
54984
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
18aadcbc-eacf-42f0-9f04-a9a6fe5a3fd3
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
152.89.218.40
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Lvxzuojt\\Titfeptt.exe\","	INV 6821202304080001.pdf.exe

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

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Monitor = "C:\\Program Files (x86)\\ISS Monitor\\issmon.exe"	INV 6821202304080001.pdf.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	INV 6821202304080001.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INV 6821202304080001.pdf.exe

description pid process target process

PID 1224 set thread context of 1724 1224 INV 6821202304080001.pdf.exe INV 6821202304080001.pdf.exe

description	pid	process	target process
PID 1224 set thread context of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe

Drops file in Program Files directory 2 IoCs

Processes:

INV 6821202304080001.pdf.exe

description	ioc	process
File created	C:\Program Files (x86)\ISS Monitor\issmon.exe	INV 6821202304080001.pdf.exe
File opened for modification	C:\Program Files (x86)\ISS Monitor\issmon.exe	INV 6821202304080001.pdf.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

Processes:

schtasks.exeschtasks.exe

pid process

1496 schtasks.exe
948 schtasks.exe

pid	process
1496	schtasks.exe
948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exeINV 6821202304080001.pdf.exe

pid	process
772	powershell.exe
1724	INV 6821202304080001.pdf.exe
1724	INV 6821202304080001.pdf.exe
1724	INV 6821202304080001.pdf.exe
1724	INV 6821202304080001.pdf.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

INV 6821202304080001.pdf.exe

pid process

1724 INV 6821202304080001.pdf.exe

pid	process
1724	INV 6821202304080001.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exeINV 6821202304080001.pdf.exeINV 6821202304080001.pdf.exe

description	pid	process
Token: SeDebugPrivilege	772	powershell.exe
Token: SeDebugPrivilege	1224	INV 6821202304080001.pdf.exe
Token: SeDebugPrivilege	1724	INV 6821202304080001.pdf.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

INV 6821202304080001.pdf.exeINV 6821202304080001.pdf.exe

description	pid	process	target process
PID 1224 wrote to memory of 772	1224	INV 6821202304080001.pdf.exe	powershell.exe
PID 1224 wrote to memory of 772	1224	INV 6821202304080001.pdf.exe	powershell.exe
PID 1224 wrote to memory of 772	1224	INV 6821202304080001.pdf.exe	powershell.exe
PID 1224 wrote to memory of 772	1224	INV 6821202304080001.pdf.exe	powershell.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1224 wrote to memory of 1724	1224	INV 6821202304080001.pdf.exe	INV 6821202304080001.pdf.exe
PID 1724 wrote to memory of 1496	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 1496	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 1496	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 1496	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 948	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 948	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 948	1724	INV 6821202304080001.pdf.exe	schtasks.exe
PID 1724 wrote to memory of 948	1724	INV 6821202304080001.pdf.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1224

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:772

C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\INV 6821202304080001.pdf.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:1724

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ISS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6BAF.tmp"
3⤵
- Creates scheduled task(s)
PID:1496

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ISS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp77FF.tmp"
3⤵
- Creates scheduled task(s)
PID:948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6BAF.tmp
Filesize
1KB

MD5
490434270100708c7e5bc87f98266ee4

SHA1
9c50d7394f5d0313824bb53dd9f5a1e2293c7689

SHA256
0523ff8b588e5e2c8fa48ebf4847508898dad71035efcff5e7b29081c1f58fab

SHA512
120464c62e463a8eb56e9ceea1b01df8fda3e5541b1e608fb265314f3a8aa64ed3966edf05dd8291ad5b06e99dc4e746afac70e7fb7549feca0b80152891d326

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp77FF.tmp
Filesize
1KB

MD5
97ca1345e92062cecc79ad320a0e89b1

SHA1
9e696a4df86c685befe01d00a16611331ed7e763

SHA256
937a440251a10c5a8921104975e5b7f166a34be5e48aa5c4ad344f8beadd1ad2

SHA512
b7cce6586e4db4e387343c01977b0768fca8c4842098f1caf7e4240fa89273279b1ade5ed25aaf108102dd06c0ee945a24cf4786eb24de34520b4c11c2e82214

Download Submit
memory/772-61-0x0000000002720000-0x0000000002760000-memory.dmp

Filesize
256KB

Download
memory/1224-54-0x0000000000930000-0x0000000000B6E000-memory.dmp

Filesize
2.2MB

Download
memory/1224-55-0x00000000048E0000-0x0000000004A3A000-memory.dmp

Filesize
1.4MB

Download
memory/1224-56-0x00000000003F0000-0x0000000000428000-memory.dmp

Filesize
224KB

Download
memory/1224-57-0x0000000004E80000-0x0000000004F12000-memory.dmp

Filesize
584KB

Download
memory/1224-60-0x0000000000880000-0x00000000008C0000-memory.dmp

Filesize
256KB

Download
memory/1724-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-87-0x0000000000810000-0x000000000082A000-memory.dmp

Filesize
104KB

Download
memory/1724-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1724-68-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-70-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-72-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-76-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/1724-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-81-0x00000000004D0000-0x00000000004DA000-memory.dmp

Filesize
40KB

Download
memory/1724-82-0x00000000007A0000-0x00000000007BE000-memory.dmp

Filesize
120KB

Download
memory/1724-83-0x00000000007C0000-0x00000000007CA000-memory.dmp

Filesize
40KB

Download
memory/1724-86-0x0000000000800000-0x0000000000812000-memory.dmp

Filesize
72KB

Download
memory/1724-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1724-89-0x0000000000910000-0x0000000000922000-memory.dmp

Filesize
72KB

Download
memory/1724-88-0x0000000000900000-0x000000000090E000-memory.dmp

Filesize
56KB

Download
memory/1724-90-0x0000000002290000-0x000000000229C000-memory.dmp

Filesize
48KB

Download
memory/1724-91-0x00000000022A0000-0x00000000022AE000-memory.dmp

Filesize
56KB

Download
memory/1724-92-0x00000000022F0000-0x0000000002304000-memory.dmp

Filesize
80KB

Download
memory/1724-93-0x0000000002440000-0x0000000002450000-memory.dmp

Filesize
64KB

Download
memory/1724-94-0x0000000004500000-0x0000000004514000-memory.dmp

Filesize
80KB

Download
memory/1724-95-0x0000000004550000-0x000000000455E000-memory.dmp

Filesize
56KB

Download
memory/1724-96-0x0000000004980000-0x00000000049AE000-memory.dmp

Filesize
184KB

Download
memory/1724-97-0x00000000049F0000-0x0000000004A04000-memory.dmp

Filesize
80KB

Download
memory/1724-99-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads