nanocore | 1d0b1b40c071c1e9faade95ef7bcf471b6c98a25f262894aaebe63a5e43ec71a

Analysis

max time kernel
146s
max time network
151s
platform
windows10-1703_x64
resource
win10-20230220-en
resource tags

arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
submitted
30-03-2023 13:15

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General

Target

IMG_005904564000.pdf.scr
Size

1.1MB
MD5

a93ffd1a1e580fd21f01cd6751fa484e
SHA1

fe21d5e2acef0a23441370b8aafa0efe236a44d1
SHA256

1d0b1b40c071c1e9faade95ef7bcf471b6c98a25f262894aaebe63a5e43ec71a
SHA512

aa13d56ce06107dde34760c55e1b55909f0e1bb6528b6ae5cade1e9a572aa3b05285885ecbccdbaafcc193f691ca1ed8de97255d6a9e044dfc2ef91bb43b7915
SSDEEP

24576:lTbBv5rUaUUUUUJUUUUUUJD3pvm6tPw4coiuxF8WZQ6k+5zUMeJf:PBLUUUUUJUUUUUUF3pvFcoiydqwFUMYf

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
Executes dropped EXE 2 IoCs

Processes:

lmtecwqo.pifRegSvcs.exe

pid process

2720 lmtecwqo.pif
2804 RegSvcs.exe

pid	process
2720	lmtecwqo.pif
2804	RegSvcs.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

lmtecwqo.pifRegSvcs.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	lmtecwqo.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\lmtecwqo.pif C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\wictuh.icm"	lmtecwqo.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hgmk\\Update.vbs"	lmtecwqo.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Monitor = "C:\\Program Files (x86)\\NAT Monitor\\natmon.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:

lmtecwqo.pif

description pid process target process

PID 2720 set thread context of 2804 2720 lmtecwqo.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 2720 set thread context of 2804	2720	lmtecwqo.pif	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

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

1516 schtasks.exe
3648 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegSvcs.exe

pid process

2804 RegSvcs.exe
2804 RegSvcs.exe
2804 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

2804 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2804 RegSvcs.exe
Token: SeDebugPrivilege 2804 RegSvcs.exe

pid	process
1516	schtasks.exe
3648	schtasks.exe

pid	process
2804	RegSvcs.exe
2804	RegSvcs.exe
2804	RegSvcs.exe

pid	process
2804	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2804	RegSvcs.exe
Token: SeDebugPrivilege	2804	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

IMG_005904564000.pdf.scrwscript.exelmtecwqo.pifRegSvcs.exe

description	pid	process	target process
PID 4300 wrote to memory of 3828	4300	IMG_005904564000.pdf.scr	wscript.exe
PID 4300 wrote to memory of 3828	4300	IMG_005904564000.pdf.scr	wscript.exe
PID 4300 wrote to memory of 3828	4300	IMG_005904564000.pdf.scr	wscript.exe
PID 3828 wrote to memory of 2720	3828	wscript.exe	lmtecwqo.pif
PID 3828 wrote to memory of 2720	3828	wscript.exe	lmtecwqo.pif
PID 3828 wrote to memory of 2720	3828	wscript.exe	lmtecwqo.pif
PID 2720 wrote to memory of 2804	2720	lmtecwqo.pif	RegSvcs.exe
PID 2720 wrote to memory of 2804	2720	lmtecwqo.pif	RegSvcs.exe
PID 2720 wrote to memory of 2804	2720	lmtecwqo.pif	RegSvcs.exe
PID 2720 wrote to memory of 2804	2720	lmtecwqo.pif	RegSvcs.exe
PID 2720 wrote to memory of 2804	2720	lmtecwqo.pif	RegSvcs.exe
PID 2804 wrote to memory of 1516	2804	RegSvcs.exe	schtasks.exe
PID 2804 wrote to memory of 1516	2804	RegSvcs.exe	schtasks.exe
PID 2804 wrote to memory of 1516	2804	RegSvcs.exe	schtasks.exe
PID 2804 wrote to memory of 3648	2804	RegSvcs.exe	schtasks.exe
PID 2804 wrote to memory of 3648	2804	RegSvcs.exe	schtasks.exe
PID 2804 wrote to memory of 3648	2804	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\IMG_005904564000.pdf.scr
"C:\Users\Admin\AppData\Local\Temp\IMG_005904564000.pdf.scr" /S
1⤵
- Suspicious use of WriteProcessMemory
PID:4300

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\System32\wscript.exe" Update-tb.t.vbe
2⤵
- Suspicious use of WriteProcessMemory
PID:3828

C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif
"C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif" wictuh.icm
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2720

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:2804

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAT Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8717.tmp"
5⤵
- Creates scheduled task(s)
PID:1516

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAT Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8821.tmp"
5⤵
- Creates scheduled task(s)
PID:3648

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

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
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

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

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Users\Admin\AppData\Local\Temp\hgmk\javkwma.bin
Filesize
36KB

MD5
fba9fa136eb3ee633010d6e1a0876c19

SHA1
13e5595208ea1a90b33106571cb3ba5635bf1f14

SHA256
63e89643afeba15b641600bbb1d0b709d49d2f8c0a3e188b2b45de987faea023

SHA512
62a0d0ce5b3482ab72be9f1518ab05d8511557fb98ea8ee00a550522aa9ff9387ee8754b60178c857b19137a47fef468150c52ea56b146823cbae513ea53752e

Download Submit
C:\Users\Admin\AppData\Local\Temp\hgmk\lmoi.mxf
Filesize
397KB

MD5
47a3760694424f080062061971c9e2ae

SHA1
107b8682b9322ee4886ade154c88c3cfebd24ae9

SHA256
2a454fbe70bedf8e9df6bb9172fd14b941b675a3465a80bc9b0fe20b499ef4ad

SHA512
31d92fc367c857fa71598fbb3346f292da574855d013a7cab0b5715eac80a7e2b37d863c92dcdb3b1ef34fc6e3529630460c9b23ba22e3d41e4553c5f3a3e655

Download Submit
C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif
Filesize
1.1MB

MD5
4157c8447c088672662e6dc50079e7d8

SHA1
d7e97005f9ebf2d9244c71eec90dae5db1a06e69

SHA256
bd5b031272dea004a334994d75ebb257c68cf40243e797c3e847e7fe87393b81

SHA512
f67e17a1ddfaf35e0deaee25ed6f127fe3eb140ee0f327780655784835bc18dfc82b148e6dcdd740668e621e0cf917cef27b052fcd95df97f68f0560ba559527

Download Submit
C:\Users\Admin\AppData\Local\Temp\hgmk\lmtecwqo.pif
Filesize
1.1MB

MD5
4157c8447c088672662e6dc50079e7d8

SHA1
d7e97005f9ebf2d9244c71eec90dae5db1a06e69

SHA256
bd5b031272dea004a334994d75ebb257c68cf40243e797c3e847e7fe87393b81

SHA512
f67e17a1ddfaf35e0deaee25ed6f127fe3eb140ee0f327780655784835bc18dfc82b148e6dcdd740668e621e0cf917cef27b052fcd95df97f68f0560ba559527

Download Submit
C:\Users\Admin\AppData\Local\Temp\hgmk\wictuh.icm
Filesize
89.7MB

MD5
656d183d6a5089e7a979925e163188ae

SHA1
39d38be4f45bf8be0a24f291cce941caf397a2c7

SHA256
5c785d181a89e05f559208ab971845517f33234dfd0f27d3584fd1bc2b505739

SHA512
896baf6ca3a3018dba20b5c0e98e10a1c3bc797fcc9d0bae20bd8698fdc7a702c187081076ef9ca9e71358f4324b214d00273b665ac6d7ee5ba1ac2e364f0795

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8717.tmp
Filesize
1KB

MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8821.tmp
Filesize
1KB

MD5
f14492637b68ff1b207505038f9713f1

SHA1
93923a2901d2e08a25dd4513fc64a16f79ed22e8

SHA256
13eb9f1dab2115af1c0f0a859f7302de60307f986c32add8a2ce710e5a13fb0f

SHA512
8dddec25a89bb685c0c076b72c9901a1ad998b95c09c87340b32b745cb04dedbe012d4217a0f11567410c7e9bf662df0063d3c38a415d772bcebdf4444cfc3c2

Download Submit
C:\Users\Admin\AppData\Local\temp\hgmk\Update-tb.t.vbe
Filesize
53KB

MD5
5b00fcce82d9a11427f01283a1bda93d

SHA1
a048992545305eaee3b9edcc74fd973494b061a9

SHA256
0b5bd27fb7eef72a52c340477447140cd43357605dd39db1d7d01914b2ae1a82

SHA512
8dd0b00f79b6aff359c531b785c59cdeec25f3390f2ea352c09e0b7a197497a6af00910922bfc7fde3028659cb99e7fdede9ad318be7f72b657b6f857bdbcd39

Download Submit
memory/2804-207-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download
memory/2804-204-0x00000000050A0000-0x0000000005132000-memory.dmp

Filesize
584KB

Download
memory/2804-205-0x00000000051E0000-0x000000000527C000-memory.dmp

Filesize
624KB

Download
memory/2804-206-0x0000000005060000-0x000000000506A000-memory.dmp

Filesize
40KB

Download
memory/2804-199-0x0000000000590000-0x0000000000C09000-memory.dmp

Filesize
6.5MB

Download
memory/2804-203-0x00000000055A0000-0x0000000005A9E000-memory.dmp

Filesize
5.0MB

Download
memory/2804-202-0x0000000000590000-0x00000000005CA000-memory.dmp

Filesize
232KB

Download
memory/2804-215-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/2804-216-0x0000000005340000-0x000000000534C000-memory.dmp

Filesize
48KB

Download
memory/2804-217-0x00000000054B0000-0x00000000054CE000-memory.dmp

Filesize
120KB

Download
memory/2804-218-0x0000000005570000-0x000000000557A000-memory.dmp

Filesize
40KB

Download
memory/2804-219-0x0000000005360000-0x0000000005370000-memory.dmp

Filesize
64KB

Download