nanocore | 3d4072b7826c27f5aa407e7ba64a3ce64beeb00d1fd5d02042afb9cc95b18835

General

Target

Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe
Size

534KB
MD5

5e614380d01c2f0f36ee265fe8dd9d9c
SHA1

63691f614618e101c120cb83b21fb56e22301960
SHA256

3d4072b7826c27f5aa407e7ba64a3ce64beeb00d1fd5d02042afb9cc95b18835
SHA512

4f2b4ee01c6737983c82045b8f64493399397ad45d655c46dbe55d20685c5c42d86418f61247e3c994f1e2f056a433e2bf310defb14f74842738928854e3708d
SSDEEP

12288:OGlaKpWlZbRbQ/POekgipNmY6hwayRJ/r/l2:XlppW1b8Rkg8NmnOJ/r/k

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

svetanakravenova248.ddns.net:5634

Mutex

28aa6c07-7c21-4208-97f7-23c9618edcb1

Attributes

activate_away_mode
true
backup_connection_host
svetanakravenova248.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-09-13T17:11:19.119527236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5634
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
28aa6c07-7c21-4208-97f7-23c9618edcb1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
svetanakravenova248.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
Executes dropped EXE 2 IoCs

Processes:

kdayca.exekdayca.exe

pid process

1016 kdayca.exe
1076 kdayca.exe
Loads dropped DLL 2 IoCs

Processes:

Payment Advice - Advice Ref A1T4C80vSIxi ACH.exekdayca.exe

pid process

1508 Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe
1016 kdayca.exe

pid	process
1016	kdayca.exe
1076	kdayca.exe

pid	process
1508	Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe
1016	kdayca.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

kdayca.exekdayca.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\sdtltnvgmep = "C:\\Users\\Admin\\AppData\\Roaming\\owftmfp\\ltvcoaoosru.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\kdayca.exe\" C:\\Users\\Admin\\AppData\\Local"	kdayca.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Service = "C:\\Program Files (x86)\\UDP Service\\udpsv.exe"	kdayca.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

kdayca.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA kdayca.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kdayca.exe

description pid process target process

PID 1016 set thread context of 1076 1016 kdayca.exe kdayca.exe

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

description	pid	process	target process
PID 1016 set thread context of 1076	1016	kdayca.exe	kdayca.exe

Drops file in Program Files directory 2 IoCs

Processes:

kdayca.exe

description	ioc	process
File created	C:\Program Files (x86)\UDP Service\udpsv.exe	kdayca.exe
File opened for modification	C:\Program Files (x86)\UDP Service\udpsv.exe	kdayca.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

kdayca.exe

pid process

1076 kdayca.exe
1076 kdayca.exe
1076 kdayca.exe
1076 kdayca.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

kdayca.exe

pid process

1076 kdayca.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

kdayca.exe

pid process

1016 kdayca.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

kdayca.exe

description pid process

Token: SeDebugPrivilege 1076 kdayca.exe

pid	process
1076	kdayca.exe
1076	kdayca.exe
1076	kdayca.exe
1076	kdayca.exe

pid	process
1076	kdayca.exe

pid	process
1016	kdayca.exe

description	pid	process
Token: SeDebugPrivilege	1076	kdayca.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Payment Advice - Advice Ref A1T4C80vSIxi ACH.exekdayca.exe

description	pid	process	target process
PID 1508 wrote to memory of 1016	1508	Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe	kdayca.exe
PID 1508 wrote to memory of 1016	1508	Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe	kdayca.exe
PID 1508 wrote to memory of 1016	1508	Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe	kdayca.exe
PID 1508 wrote to memory of 1016	1508	Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe	kdayca.exe
PID 1016 wrote to memory of 1076	1016	kdayca.exe	kdayca.exe
PID 1016 wrote to memory of 1076	1016	kdayca.exe	kdayca.exe
PID 1016 wrote to memory of 1076	1016	kdayca.exe	kdayca.exe
PID 1016 wrote to memory of 1076	1016	kdayca.exe	kdayca.exe
PID 1016 wrote to memory of 1076	1016	kdayca.exe	kdayca.exe

C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe
"C:\Users\Admin\AppData\Local\Temp\Payment Advice - Advice Ref A1T4C80vSIxi ACH.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1508

C:\Users\Admin\AppData\Local\Temp\kdayca.exe
"C:\Users\Admin\AppData\Local\Temp\kdayca.exe" C:\Users\Admin\AppData\Local\Temp\figrnaab.u
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1016

C:\Users\Admin\AppData\Local\Temp\kdayca.exe
"C:\Users\Admin\AppData\Local\Temp\kdayca.exe"
3⤵
- Executes dropped EXE
- 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
PID:1076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

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\figrnaab.u
Filesize
7KB

MD5
2c4820a476f531228300166a9a6cdd0b

SHA1
74b0de590aa64c2a712fdd41a5b89534f0aaaf9b

SHA256
3a5ee30e2f418e1e20273f0ff26bd181eccdfcd037e9ba31a8c06d2205920ca8

SHA512
b9247d55eca78db32572ac9f28e04d09779e298076d54860e286274f9fb535020671082a6920a19ca11517a40b1b0ca88d91e94b019a4f1db7a824964ff79323

Download Submit
C:\Users\Admin\AppData\Local\Temp\kdayca.exe
Filesize
99KB

MD5
ced9a738610c75dc13095052e3e15e3d

SHA1
d801230769d1d3c5889d1d613fdd1a04123c2fad

SHA256
bf416d8928db2dcfc77f865190fcb68578ed7c9841f7a02bebcd1cabc922b4bd

SHA512
d170b38c1a8e958af2a071a09c4a6762c2bb088614e3daf9be7f2eb90e1b50f0e62ee1a46962d6f2ec08a64b47716dcd5e3c3562d2c51f533c0545289d10663b

Download Submit
C:\Users\Admin\AppData\Local\Temp\kdayca.exe
Filesize
99KB

MD5
ced9a738610c75dc13095052e3e15e3d

SHA1
d801230769d1d3c5889d1d613fdd1a04123c2fad

SHA256
bf416d8928db2dcfc77f865190fcb68578ed7c9841f7a02bebcd1cabc922b4bd

SHA512
d170b38c1a8e958af2a071a09c4a6762c2bb088614e3daf9be7f2eb90e1b50f0e62ee1a46962d6f2ec08a64b47716dcd5e3c3562d2c51f533c0545289d10663b

Download Submit
C:\Users\Admin\AppData\Local\Temp\kdayca.exe
Filesize
99KB

MD5
ced9a738610c75dc13095052e3e15e3d

SHA1
d801230769d1d3c5889d1d613fdd1a04123c2fad

SHA256
bf416d8928db2dcfc77f865190fcb68578ed7c9841f7a02bebcd1cabc922b4bd

SHA512
d170b38c1a8e958af2a071a09c4a6762c2bb088614e3daf9be7f2eb90e1b50f0e62ee1a46962d6f2ec08a64b47716dcd5e3c3562d2c51f533c0545289d10663b

Download Submit
C:\Users\Admin\AppData\Local\Temp\lxnzlufzpky.tm
Filesize
280KB

MD5
801d5102cc4d411b23d8c10dca8d5098

SHA1
cbaa0a9564fc44c30d309926c49d91e62cb6a0ff

SHA256
fe39d1074568852fec2814d93045c6d676dc7272ccaefa4836c307bfb852b737

SHA512
fc6fe969cd9d260c2dbf61ead074cc441c12f03a20c8873d8348599226da79ef802239a0d4b63ab1d859e2179def51f61f741616f14f03e068c161cf094ea6d9

Download Submit
\Users\Admin\AppData\Local\Temp\kdayca.exe
Filesize
99KB

MD5
ced9a738610c75dc13095052e3e15e3d

SHA1
d801230769d1d3c5889d1d613fdd1a04123c2fad

SHA256
bf416d8928db2dcfc77f865190fcb68578ed7c9841f7a02bebcd1cabc922b4bd

SHA512
d170b38c1a8e958af2a071a09c4a6762c2bb088614e3daf9be7f2eb90e1b50f0e62ee1a46962d6f2ec08a64b47716dcd5e3c3562d2c51f533c0545289d10663b

Download Submit
\Users\Admin\AppData\Local\Temp\kdayca.exe
Filesize
99KB

MD5
ced9a738610c75dc13095052e3e15e3d

SHA1
d801230769d1d3c5889d1d613fdd1a04123c2fad

SHA256
bf416d8928db2dcfc77f865190fcb68578ed7c9841f7a02bebcd1cabc922b4bd

SHA512
d170b38c1a8e958af2a071a09c4a6762c2bb088614e3daf9be7f2eb90e1b50f0e62ee1a46962d6f2ec08a64b47716dcd5e3c3562d2c51f533c0545289d10663b

Download Submit
memory/1016-56-0x0000000000000000-mapping.dmp

Download
memory/1076-66-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1076-63-0x0000000000401896-mapping.dmp

Download
memory/1076-67-0x00000000003B0000-0x00000000003E8000-memory.dmp

Filesize
224KB

Download
memory/1076-68-0x0000000000810000-0x000000000081A000-memory.dmp

Filesize
40KB

Download
memory/1076-69-0x0000000001EA0000-0x0000000001EBE000-memory.dmp

Filesize
120KB

Download
memory/1076-70-0x00000000008E0000-0x00000000008EA000-memory.dmp

Filesize
40KB

Download
memory/1076-72-0x00000000042A0000-0x00000000042BA000-memory.dmp

Filesize
104KB

Download
memory/1076-71-0x0000000001FD0000-0x0000000001FE2000-memory.dmp

Filesize
72KB

Download
memory/1076-73-0x0000000004190000-0x00000000041A4000-memory.dmp

Filesize
80KB

Download
memory/1076-75-0x00000000047E0000-0x000000000480E000-memory.dmp

Filesize
184KB

Download
memory/1076-74-0x0000000004780000-0x000000000478E000-memory.dmp

Filesize
56KB

Download
memory/1076-76-0x0000000004790000-0x00000000047A4000-memory.dmp

Filesize
80KB

Download
memory/1508-54-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads