nanocore | a5affcfc364530db52dd4fcf252187cc09968a7bb1f1149bb919fd339634468a

General

Target

Scan_00059010189_ ref. 004118379411_ pdf.exe
Size

344KB
MD5

106117a9928b774aa6bbb657f275de53
SHA1

208d61ecd30789fba2325a0e0f46bb63bdba5bd9
SHA256

a5affcfc364530db52dd4fcf252187cc09968a7bb1f1149bb919fd339634468a
SHA512

821b25876ccdf80a77714618766a0578898f6671755a1e399d1d5ab7302ceaa9d67b6ed37964dad27088996823c5bd2db312eb0fd5dc00123d294800797c24f1

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.244.38.210:7008

127.0.0.1:7008

Mutex

003adc3a-22f1-4bc1-a79f-fc8c7d09606c

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-10-20T22:48:03.749409436Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
2000
connection_port
7008
default_group
Mjx_users
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
50000
keyboard_logging
false
lan_timeout
3500
max_packet_size
1.048576e+07
mutex
003adc3a-22f1-4bc1-a79f-fc8c7d09606c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.244.38.210
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
3000
run_delay
1000
run_on_startup
false
set_critical_process
true
timeout_interval
4000
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

Processes:

RegAsm.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"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Scan_00059010189_ ref. 004118379411_ pdf.exe

description pid process target process

PID 1404 set thread context of 3952 1404 Scan_00059010189_ ref. 004118379411_ pdf.exe RegAsm.exe

description	pid	process	target process
PID 1404 set thread context of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

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

Processes:

schtasks.exeschtasks.exe

pid process

896 schtasks.exe
740 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

3952 RegAsm.exe
3952 RegAsm.exe
3952 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3952 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3952 RegAsm.exe

pid	process
896	schtasks.exe
740	schtasks.exe

pid	process
3952	RegAsm.exe
3952	RegAsm.exe
3952	RegAsm.exe

pid	process
3952	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3952	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Scan_00059010189_ ref. 004118379411_ pdf.exeRegAsm.exe

description	pid	process	target process
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 1404 wrote to memory of 3952	1404	Scan_00059010189_ ref. 004118379411_ pdf.exe	RegAsm.exe
PID 3952 wrote to memory of 896	3952	RegAsm.exe	schtasks.exe
PID 3952 wrote to memory of 896	3952	RegAsm.exe	schtasks.exe
PID 3952 wrote to memory of 896	3952	RegAsm.exe	schtasks.exe
PID 3952 wrote to memory of 740	3952	RegAsm.exe	schtasks.exe
PID 3952 wrote to memory of 740	3952	RegAsm.exe	schtasks.exe
PID 3952 wrote to memory of 740	3952	RegAsm.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Scan_00059010189_ ref. 004118379411_ pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Scan_00059010189_ ref. 004118379411_ pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1404

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3952

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA1F3.tmp"
3⤵
- Creates scheduled task(s)
PID:896

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA32C.tmp"
3⤵
- Creates scheduled task(s)
PID:740

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA1F3.tmp
MD5
48ef7fa9033389ad7929d7a6b9d10298

SHA1
9db6cb7325c8bdf66a15f7b5f34703709a45aeb6

SHA256
0c1b5f67eeb276d1d4205b138ce32bc6149924e02281a2db8e4623a700e88f15

SHA512
ac8bd104ecbacc9bccce9e087f67e5b18072d59367ccd31d4e66132b6baaea520cba5b9b59464483d86abf74826b382c402f12e9a586c99bda8c78a0de33944e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA32C.tmp
MD5
b3b017f9df206021717a11f11d895402

SHA1
e4ea12823af6550ee634536eec1eb14490580a3b

SHA256
654dfce2c28024364e679e1b958f3fb81fc6d29685d534d905d1c83a84351024

SHA512
95666cb81aa1fd1ade04a32f63381ce8bff274d7d300c0b59cbb10a294c4d1eebaa3000365a2000b38793de030044995cf23e623c5e3648d9b00501f97ff9343

Download Submit
memory/740-18-0x0000000000000000-mapping.dmp

Download
memory/896-16-0x0000000000000000-mapping.dmp

Download
memory/1404-3-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download
memory/1404-5-0x00000000053C0000-0x00000000053C1000-memory.dmp

Filesize
4KB

Download
memory/1404-6-0x0000000002F80000-0x0000000002F92000-memory.dmp

Filesize
72KB

Download
memory/1404-2-0x0000000073550000-0x0000000073C3E000-memory.dmp

Filesize
6.9MB

Download
memory/3952-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3952-15-0x0000000005560000-0x0000000005561000-memory.dmp

Filesize
4KB

Download
memory/3952-13-0x0000000005570000-0x0000000005571000-memory.dmp

Filesize
4KB

Download
memory/3952-12-0x0000000005B30000-0x0000000005B31000-memory.dmp

Filesize
4KB

Download
memory/3952-9-0x00000000734B0000-0x0000000073B9E000-memory.dmp

Filesize
6.9MB

Download
memory/3952-8-0x000000000041E792-mapping.dmp

Download
memory/3952-20-0x00000000057F0000-0x00000000057F5000-memory.dmp

Filesize
20KB

Download
memory/3952-21-0x0000000005800000-0x0000000005819000-memory.dmp

Filesize
100KB

Download
memory/3952-22-0x0000000005B20000-0x0000000005B23000-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