nanocore | a955997c08ed97f83968344c9eff0a4789683fc99ef1872c6bf223990c30cdda

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
30-03-2023 09:01

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General

Target

b6a93bf2bc23112c54ccb654fce93f27.scr.exe
Size

1.1MB
MD5

c47bb4cb98316705617288bbe59667f3
SHA1

e5b84e94f268a1a45e8e1134b4a4aa1afe07ff09
SHA256

a955997c08ed97f83968344c9eff0a4789683fc99ef1872c6bf223990c30cdda
SHA512

5c0020f4803d248a8784a29b566dfa413439b3a7653a261e2d64ea556660df0d3e8ea8a6da5376d3184f56e01a15809b9077483964886332ae05453b261338b9
SSDEEP

24576:lTbBv5rUaUUUUUJUUUUUUJDgpvm6t2SwCDa8WZQ6k+5zUMexz:PBLUUUUUJUUUUUUFgpvqCDadqwFUM4z

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

december2n.duckdns.org:40111

december2nd.ddns.net:40111

Mutex

32ca6e6e-2fe0-4ef5-a3ea-5de451e80042

Attributes

activate_away_mode
false
backup_connection_host
december2nd.ddns.net
backup_dns_server
buffer_size
65538
build_time
2022-11-26T05:13:34.059050336Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
40111
default_group
mama
enable_debug_mode
true
gc_threshold
1.0485772e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.0485772e+07
mutex
32ca6e6e-2fe0-4ef5-a3ea-5de451e80042
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
december2n.duckdns.org
primary_dns_server
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
8009

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

b6a93bf2bc23112c54ccb654fce93f27.scr.exewscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	b6a93bf2bc23112c54ccb654fce93f27.scr.exe
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	wscript.exe

Executes dropped EXE 2 IoCs

Processes:

apti.pifRegSvcs.exe

pid process

1280 apti.pif
4372 RegSvcs.exe

pid	process
1280	apti.pif
4372	RegSvcs.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

apti.pifRegSvcs.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	apti.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\blfd\\apti.pif C:\\Users\\Admin\\AppData\\Local\\Temp\\blfd\\lxnknfa.xls"	apti.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\blfd\\Update.vbs"	apti.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SAAS Monitor = "C:\\Program Files (x86)\\SAAS Monitor\\saasmon.exe"	RegSvcs.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegSvcs.exe

description ioc process

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

Processes:

apti.pif

description pid process target process

PID 1280 set thread context of 4372 1280 apti.pif RegSvcs.exe

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

description	pid	process	target process
PID 1280 set thread context of 4372	1280	apti.pif	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	process
File created	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	RegSvcs.exe

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

System Information Discovery
T1082
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

4056 schtasks.exe
3704 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegSvcs.exe

pid process

4372 RegSvcs.exe
4372 RegSvcs.exe
4372 RegSvcs.exe
4372 RegSvcs.exe
4372 RegSvcs.exe
4372 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

4372 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 4372 RegSvcs.exe
Token: SeDebugPrivilege 4372 RegSvcs.exe
Token: SeDebugPrivilege 4372 RegSvcs.exe

pid	process
4056	schtasks.exe
3704	schtasks.exe

pid	process
4372	RegSvcs.exe
4372	RegSvcs.exe
4372	RegSvcs.exe
4372	RegSvcs.exe
4372	RegSvcs.exe
4372	RegSvcs.exe

pid	process
4372	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	4372	RegSvcs.exe
Token: SeDebugPrivilege	4372	RegSvcs.exe
Token: SeDebugPrivilege	4372	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

b6a93bf2bc23112c54ccb654fce93f27.scr.exewscript.exeapti.pifRegSvcs.exe

description	pid	process	target process
PID 2412 wrote to memory of 1396	2412	b6a93bf2bc23112c54ccb654fce93f27.scr.exe	wscript.exe
PID 2412 wrote to memory of 1396	2412	b6a93bf2bc23112c54ccb654fce93f27.scr.exe	wscript.exe
PID 2412 wrote to memory of 1396	2412	b6a93bf2bc23112c54ccb654fce93f27.scr.exe	wscript.exe
PID 1396 wrote to memory of 1280	1396	wscript.exe	apti.pif
PID 1396 wrote to memory of 1280	1396	wscript.exe	apti.pif
PID 1396 wrote to memory of 1280	1396	wscript.exe	apti.pif
PID 1280 wrote to memory of 4372	1280	apti.pif	RegSvcs.exe
PID 1280 wrote to memory of 4372	1280	apti.pif	RegSvcs.exe
PID 1280 wrote to memory of 4372	1280	apti.pif	RegSvcs.exe
PID 1280 wrote to memory of 4372	1280	apti.pif	RegSvcs.exe
PID 1280 wrote to memory of 4372	1280	apti.pif	RegSvcs.exe
PID 4372 wrote to memory of 4056	4372	RegSvcs.exe	schtasks.exe
PID 4372 wrote to memory of 4056	4372	RegSvcs.exe	schtasks.exe
PID 4372 wrote to memory of 4056	4372	RegSvcs.exe	schtasks.exe
PID 4372 wrote to memory of 3704	4372	RegSvcs.exe	schtasks.exe
PID 4372 wrote to memory of 3704	4372	RegSvcs.exe	schtasks.exe
PID 4372 wrote to memory of 3704	4372	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\b6a93bf2bc23112c54ccb654fce93f27.scr.exe
"C:\Users\Admin\AppData\Local\Temp\b6a93bf2bc23112c54ccb654fce93f27.scr.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2412

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\System32\wscript.exe" Update-jl.f.vbe
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1396

C:\Users\Admin\AppData\Local\Temp\blfd\apti.pif
"C:\Users\Admin\AppData\Local\Temp\blfd\apti.pif" lxnknfa.xls
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1280

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
"C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
4⤵
- 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
- Suspicious use of WriteProcessMemory
PID:4372

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SAAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2AF.tmp"
5⤵
- Creates scheduled task(s)
PID:4056

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SAAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp39B.tmp"
5⤵
- Creates scheduled task(s)
PID:3704

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\blfd\apti.pif
Filesize
1.1MB

MD5
06747aee777a9f5abe5e387f1affc067

SHA1
c3c4d29f6bd978f9b4191bfda686934d4f53c0c9

SHA256
6b520d92455c1d6f40037dea85bdde472c50ea500b79a0a9db78b7e3e5a346f1

SHA512
9972ea56cb64a8cbda5f3226893b5e26a609dc7ab391946f581b6953fa4c1b51d79e74913c899469229afb43cc0caa1378056b29eda79fefdaafcca83e2bbfe5

Download Submit
C:\Users\Admin\AppData\Local\Temp\blfd\apti.pif
Filesize
1.1MB

MD5
06747aee777a9f5abe5e387f1affc067

SHA1
c3c4d29f6bd978f9b4191bfda686934d4f53c0c9

SHA256
6b520d92455c1d6f40037dea85bdde472c50ea500b79a0a9db78b7e3e5a346f1

SHA512
9972ea56cb64a8cbda5f3226893b5e26a609dc7ab391946f581b6953fa4c1b51d79e74913c899469229afb43cc0caa1378056b29eda79fefdaafcca83e2bbfe5

Download Submit
C:\Users\Admin\AppData\Local\Temp\blfd\lxnknfa.xls
Filesize
87.5MB

MD5
220eef6469238dbe3db001b27260ac37

SHA1
2c722a3987008e3fe1b838995c6d8663fd7cf197

SHA256
882cf974b5d908d066b8eb7f0751d8216841cb03334d314f561d663d94fbf331

SHA512
cca1f744b9ca4a2f5512ce2b76bd9f6e56db611b7a81d4e3dcb2e52fec19a67d0092e6f9b316017bfe18c00667f6e311049174b8482dbe1e23dd3d34d2c7cb24

Download Submit
C:\Users\Admin\AppData\Local\Temp\blfd\omwtgeufq.mp3
Filesize
37KB

MD5
003b9e3ec540ce878ab97ab8eb4af3c4

SHA1
ae7c72b19360db43066f500aa0c1fa64fbfa3912

SHA256
17804fd5afd4987b0b81d56cb72c37150d88f1cb2eb0e41086e3160751aba74f

SHA512
94aff604a2c1a2b6720d9cb73e3618b008abf56b3ff8ce0b505956630d1c8a2a18d4726372abda591340de823a641c3af7236e9e00a881f4f4049c6ab02ee9f9

Download Submit
C:\Users\Admin\AppData\Local\Temp\blfd\vgwpju.sbp
Filesize
397KB

MD5
47a3760694424f080062061971c9e2ae

SHA1
107b8682b9322ee4886ade154c88c3cfebd24ae9

SHA256
2a454fbe70bedf8e9df6bb9172fd14b941b675a3465a80bc9b0fe20b499ef4ad

SHA512
31d92fc367c857fa71598fbb3346f292da574855d013a7cab0b5715eac80a7e2b37d863c92dcdb3b1ef34fc6e3529630460c9b23ba22e3d41e4553c5f3a3e655

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2AF.tmp
Filesize
1KB

MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp39B.tmp
Filesize
1KB

MD5
8a92e4176a36b704a55c4888e04853e2

SHA1
6efbd8d0097e2632ca90083974b845f93e5b6a5c

SHA256
91f88494715f51246ed7255ad4bba50e2f5dec26bef203f31450a6a8e1443cdd

SHA512
4ea87f28391b022cfad5e0f695c2413a5addb18a6e9fdf9c56c4121253cf6e532110da8200b1c57b43ee85ed047f1530b1516a7c689c9574af069176114fa157

Download Submit
C:\Users\Admin\AppData\Local\temp\blfd\Update-jl.f.vbe
Filesize
64KB

MD5
2f16024e2e3bc934fb79e94ba356818f

SHA1
450d6252826eaa9f6e5ec170ae3fa213261f16ae

SHA256
a41afce0198df315a77eaac8a57b84097c5e48cab81438e804b91ddb09819d87

SHA512
1e2bfd3d809913b3b5a3ce3b336e759683473dd6db4109200db0edcfe885aa930a99c4f016e2cad7930e1aa181e8ecc89abdec5e1ab8a29d1d5e019e83a41c78

Download Submit
memory/4372-194-0x0000000000F00000-0x0000000000F3A000-memory.dmp

Filesize
232KB

Download
memory/4372-196-0x0000000005A90000-0x0000000005B22000-memory.dmp

Filesize
584KB

Download
memory/4372-197-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

Filesize
624KB

Download
memory/4372-198-0x00000000059F0000-0x00000000059FA000-memory.dmp

Filesize
40KB

Download
memory/4372-200-0x0000000005D90000-0x0000000005DA0000-memory.dmp

Filesize
64KB

Download
memory/4372-195-0x0000000006180000-0x0000000006724000-memory.dmp

Filesize
5.6MB

Download
memory/4372-191-0x0000000000F00000-0x00000000014BF000-memory.dmp

Filesize
5.7MB

Download
memory/4372-209-0x0000000007590000-0x00000000075F6000-memory.dmp

Filesize
408KB

Download
memory/4372-211-0x0000000005D90000-0x0000000005DA0000-memory.dmp

Filesize
64KB

Download