nanocore | 75689310b8c24387bb3b019d26e4095428cd5f3691d714c6c2e7ae0e67dc1da4

General

Target

udpss.exe
Size

612KB
MD5

e136cc463b23f386b503cb1d8c3e0712
SHA1

94a914a9e0dd8d9c4fd229e395b592c0b23b6288
SHA256

75689310b8c24387bb3b019d26e4095428cd5f3691d714c6c2e7ae0e67dc1da4
SHA512

42386406975711bd3cb1f57a99a7cc66b29ce66d4fc92bc280575382593dfac75c222970a445d0b2b81015bee3e54a8f39521fbd2ae0e237be0f61483d99b353

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

nibiru3.duckdns.org:5555

Mutex

baf51abc-fcf6-4714-9891-8641847e569e

Attributes

activate_away_mode
false
backup_connection_host
nibiru3.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-11-12T20:45:05.435786436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
5555
default_group
...000Githuob
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30006
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
baf51abc-fcf6-4714-9891-8641847e569e
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
nibiru3.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
7988

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

Processes:

udpss.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe"	udpss.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

udpss.exe

description ioc process

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

Processes:

udpss.exe

description pid process target process

PID 576 set thread context of 692 576 udpss.exe udpss.exe

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

description	pid	process	target process
PID 576 set thread context of 692	576	udpss.exe	udpss.exe

Drops file in Program Files directory 2 IoCs

Processes:

udpss.exe

description	ioc	process
File created	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	udpss.exe
File opened for modification	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	udpss.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

udpss.exe

pid process

692 udpss.exe
692 udpss.exe
692 udpss.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

udpss.exe

pid process

692 udpss.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

udpss.exe

description pid process

Token: SeDebugPrivilege 692 udpss.exe
Token: SeDebugPrivilege 692 udpss.exe

pid	process
692	udpss.exe
692	udpss.exe
692	udpss.exe

pid	process
692	udpss.exe

description	pid	process
Token: SeDebugPrivilege	692	udpss.exe
Token: SeDebugPrivilege	692	udpss.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

udpss.exe

description	pid	process	target process
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe
PID 576 wrote to memory of 692	576	udpss.exe	udpss.exe

C:\Users\Admin\AppData\Local\Temp\udpss.exe
"C:\Users\Admin\AppData\Local\Temp\udpss.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:576

C:\Users\Admin\AppData\Local\Temp\udpss.exe
"C:\Users\Admin\AppData\Local\Temp\udpss.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
PID:692

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

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\udpss.exe.log
MD5
39ccabdfc0a394c1ca31468f90ed05b7

SHA1
85ace2ac4dab7da0b73fb35deeacabc95ef04ec1

SHA256
d4bf218f050acb199a23453257ec6173fbe186227b411e0d07a5270f2807302a

SHA512
d5fafc4df8e8512e70c012c545e44163a35c91ec21a618747ce0b0ebbe8a9e915c0f7189deb31ce31ee0139ddc631d9d07c9c5c166385c92c3ceaa35830b9aee

Download Submit
memory/576-3-0x0000000000D50000-0x0000000000D51000-memory.dmp

Filesize
4KB

Download
memory/576-5-0x0000000005520000-0x0000000005521000-memory.dmp

Filesize
4KB

Download
memory/576-6-0x0000000005A50000-0x0000000005A51000-memory.dmp

Filesize
4KB

Download
memory/576-7-0x00000000058F0000-0x00000000058F2000-memory.dmp

Filesize
8KB

Download
memory/576-2-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/692-11-0x00000000731A0000-0x000000007388E000-memory.dmp

Filesize
6.9MB

Download
memory/692-9-0x000000000041E792-mapping.dmp

Download
memory/692-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/692-14-0x0000000005570000-0x0000000005571000-memory.dmp

Filesize
4KB

Download
memory/692-15-0x0000000005070000-0x0000000005071000-memory.dmp

Filesize
4KB

Download
memory/692-16-0x00000000051B0000-0x00000000051B1000-memory.dmp

Filesize
4KB

Download
memory/692-17-0x0000000005040000-0x0000000005041000-memory.dmp

Filesize
4KB

Download
memory/692-18-0x0000000005180000-0x0000000005181000-memory.dmp

Filesize
4KB

Download
memory/692-19-0x0000000005170000-0x0000000005175000-memory.dmp

Filesize
20KB

Download
memory/692-20-0x0000000005190000-0x00000000051A9000-memory.dmp

Filesize
100KB

Download
memory/692-21-0x0000000005360000-0x0000000005363000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads