nanocore | aeb8e080b996a75f85bb82e2e7a42d0302735713f34fb95fff1bfb97a030e107

General

Target

bbe4ba566d229a405da3af72193d297f.exe
Size

1.3MB
MD5

bbe4ba566d229a405da3af72193d297f
SHA1

ffb73821d698bc2e32f1a32c7adf95e66520c7a8
SHA256

aeb8e080b996a75f85bb82e2e7a42d0302735713f34fb95fff1bfb97a030e107
SHA512

a3ba9225b2719f482f807fe91217cdccbb9c415d54a8cd4531960bf20456868ba7fb1be2e473c26f306c33b74615a6f5192f0c852dca25c66e6d63a4cbb25529
SSDEEP

24576:8ixNAopnJcU4TgHosbIY95AcS1h9VOzYJ0Natxb:8iFpnx4TUosbIYEcSGQ06

Score

10^/10

nanocore purecrypter downloader evasion keylogger loader persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rcontrol4sec.ddnsgeek.com:5080

127.0.0.1:5080

Mutex

19b525d2-02f6-47c5-b606-1d038212d191

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-11-12T11:11:53.819338936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5080
default_group
Set
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
19b525d2-02f6-47c5-b606-1d038212d191
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
rcontrol4sec.ddnsgeek.com
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

Detect PureCrypter injector 1 IoCs

loader

Processes:

resource	yara_rule
behavioral1/memory/2032-55-0x0000000004D30000-0x0000000004FB2000-memory.dmp	family_purecrypter

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

bbe4ba566d229a405da3af72193d297f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Flash Player.exe\","	bbe4ba566d229a405da3af72193d297f.exe

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

bbe4ba566d229a405da3af72193d297f.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	bbe4ba566d229a405da3af72193d297f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bbe4ba566d229a405da3af72193d297f.exe

description pid process target process

PID 2032 set thread context of 904 2032 bbe4ba566d229a405da3af72193d297f.exe bbe4ba566d229a405da3af72193d297f.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 2032 set thread context of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exebbe4ba566d229a405da3af72193d297f.exe

pid	process
1500	powershell.exe
904	bbe4ba566d229a405da3af72193d297f.exe
904	bbe4ba566d229a405da3af72193d297f.exe
904	bbe4ba566d229a405da3af72193d297f.exe
904	bbe4ba566d229a405da3af72193d297f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

bbe4ba566d229a405da3af72193d297f.exe

pid process

904 bbe4ba566d229a405da3af72193d297f.exe

pid	process
904	bbe4ba566d229a405da3af72193d297f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

bbe4ba566d229a405da3af72193d297f.exepowershell.exebbe4ba566d229a405da3af72193d297f.exe

description	pid	process
Token: SeDebugPrivilege	2032	bbe4ba566d229a405da3af72193d297f.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	904	bbe4ba566d229a405da3af72193d297f.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

bbe4ba566d229a405da3af72193d297f.exe

description	pid	process	target process
PID 2032 wrote to memory of 1500	2032	bbe4ba566d229a405da3af72193d297f.exe	powershell.exe
PID 2032 wrote to memory of 1500	2032	bbe4ba566d229a405da3af72193d297f.exe	powershell.exe
PID 2032 wrote to memory of 1500	2032	bbe4ba566d229a405da3af72193d297f.exe	powershell.exe
PID 2032 wrote to memory of 1500	2032	bbe4ba566d229a405da3af72193d297f.exe	powershell.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe
PID 2032 wrote to memory of 904	2032	bbe4ba566d229a405da3af72193d297f.exe	bbe4ba566d229a405da3af72193d297f.exe

C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe
"C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2032

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:1500

C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe
C:\Users\Admin\AppData\Local\Temp\bbe4ba566d229a405da3af72193d297f.exe
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/904-76-0x0000000000650000-0x000000000065A000-memory.dmp

Filesize
40KB

Download
memory/904-89-0x0000000004BB0000-0x0000000004BBE000-memory.dmp

Filesize
56KB

Download
memory/904-72-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-90-0x0000000004CD0000-0x0000000004CFE000-memory.dmp

Filesize
184KB

Download
memory/904-74-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-88-0x0000000004B90000-0x0000000004BA4000-memory.dmp

Filesize
80KB

Download
memory/904-87-0x0000000004B80000-0x0000000004B90000-memory.dmp

Filesize
64KB

Download
memory/904-86-0x0000000004B70000-0x0000000004B7C000-memory.dmp

Filesize
48KB

Download
memory/904-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/904-70-0x000000000041E792-mapping.dmp

Download
memory/904-91-0x0000000004D00000-0x0000000004D14000-memory.dmp

Filesize
80KB

Download
memory/904-85-0x0000000004840000-0x0000000004854000-memory.dmp

Filesize
80KB

Download
memory/904-84-0x0000000004830000-0x000000000483C000-memory.dmp

Filesize
48KB

Download
memory/904-77-0x0000000000660000-0x000000000067E000-memory.dmp

Filesize
120KB

Download
memory/904-78-0x0000000000680000-0x000000000068A000-memory.dmp

Filesize
40KB

Download
memory/904-79-0x0000000000B00000-0x0000000000B12000-memory.dmp

Filesize
72KB

Download
memory/904-80-0x0000000000B50000-0x0000000000B6A000-memory.dmp

Filesize
104KB

Download
memory/904-81-0x0000000000B80000-0x0000000000B8E000-memory.dmp

Filesize
56KB

Download
memory/904-82-0x0000000000CE0000-0x0000000000CF2000-memory.dmp

Filesize
72KB

Download
memory/904-83-0x0000000004820000-0x000000000482E000-memory.dmp

Filesize
56KB

Download
memory/1500-61-0x0000000070010000-0x00000000705BB000-memory.dmp

Filesize
5.7MB

Download
memory/1500-60-0x0000000070010000-0x00000000705BB000-memory.dmp

Filesize
5.7MB

Download
memory/1500-59-0x0000000070010000-0x00000000705BB000-memory.dmp

Filesize
5.7MB

Download
memory/1500-57-0x0000000000000000-mapping.dmp

Download
memory/2032-55-0x0000000004D30000-0x0000000004FB2000-memory.dmp

Filesize
2.5MB

Download
memory/2032-62-0x00000000045E0000-0x0000000004646000-memory.dmp

Filesize
408KB

Download
memory/2032-54-0x0000000000CF0000-0x0000000000E40000-memory.dmp

Filesize
1.3MB

Download
memory/2032-56-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads