nanocore | d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0

General

Target

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
Size

645KB
MD5

5b6c9a61cbed887ceb134e454293de1f
SHA1

6edd9885ce03c2f84d12d973f1d95ab364b4f63e
SHA256

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0
SHA512

5b7d4114d218bc5895be0c125a6c2e2088a7ea754c3b902527654b9e327afafe7bacb87d66a09fd03fbce2b727c52a5d32d54955f235985f12cc89ad874e5931
SSDEEP

12288:Eu/osQMgL96w0SVvV6fcaubLH31O2lxvdJGtKc/5kkfi1MgxdsKfr3e3g8C1DuRW:Eur9gkEPGcHHX1OSr/cnqGodhz3cp4oW

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan upx

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

213.184.126.143:1993

Mutex

023e0719-23ff-48a0-a14a-16f92fea10e1

Attributes

activate_away_mode
true
backup_connection_host
213.184.126.143
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-01-21T14:43:07.916268436Z
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
1993
default_group
isreal
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
023e0719-23ff-48a0-a14a-16f92fea10e1
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
213.184.126.143
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

UPX dump on OEP (original entry point) 10 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1656-0-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-1-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-2-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-3-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-4-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-5-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-6-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-25-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-26-0x0000000001140000-0x0000000001288000-memory.dmp	UPX
behavioral1/memory/1656-31-0x0000000001140000-0x0000000001288000-memory.dmp	UPX

Drops startup file 1 IoCs

Processes:

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1656-0-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-1-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-2-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-3-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-4-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-5-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-6-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-25-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-26-0x0000000001140000-0x0000000001288000-memory.dmp	upx
behavioral1/memory/1656-31-0x0000000001140000-0x0000000001288000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe

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

AutoIT Executable 9 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral1/memory/1656-1-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-2-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-3-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-4-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-5-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-6-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-25-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-26-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe
behavioral1/memory/1656-31-0x0000000001140000-0x0000000001288000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

description	pid	process	target process
PID 1656 set thread context of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2744 schtasks.exe
2824 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

2528 RegAsm.exe
2528 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

2528 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 2528 RegAsm.exe

pid	process
2744	schtasks.exe
2824	schtasks.exe

pid	process
2528	RegAsm.exe
2528	RegAsm.exe

pid	process
2528	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2528	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

pid	process
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

Suspicious use of SendNotifyMessage 3 IoCs

Processes:

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

pid	process
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exeRegAsm.exe

description	pid	process	target process
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 1656 wrote to memory of 2528	1656	d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe	RegAsm.exe
PID 2528 wrote to memory of 2744	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2744	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2744	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2744	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2824	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2824	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2824	2528	RegAsm.exe	schtasks.exe
PID 2528 wrote to memory of 2824	2528	RegAsm.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe
"C:\Users\Admin\AppData\Local\Temp\d3f2101ec9973fb3326f7dd64e45e5de7f874cd959727e4e88cf3b7a0f1a3dd0.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:2528

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp13DE.tmp"
3⤵
- Creates scheduled task(s)
PID:2744

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp142D.tmp"
3⤵
- Creates scheduled task(s)
PID:2824

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp13DE.tmp
Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp142D.tmp
Filesize
1KB

MD5
4b7ef560289c0f62d0baf6f14f48a57a

SHA1
8331acb90dde588aa3196919f6e847f398fd06d1

SHA256
062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207

SHA512
ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8

Download Submit
memory/1656-5-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-1-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-4-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-0-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-6-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-7-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download
memory/1656-31-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-26-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-25-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-3-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/1656-2-0x0000000001140000-0x0000000001288000-memory.dmp

Filesize
1.3MB

Download
memory/2528-17-0x00000000740A0000-0x000000007464B000-memory.dmp

Filesize
5.7MB

Download
memory/2528-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2528-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2528-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2528-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2528-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2528-32-0x00000000740A0000-0x000000007464B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads