nanocore | 656f91c3dfaf474b5f7d78c911a8c3ca1fa950f96dc6d0253bc7fce7041893b9

General

Target

Product and Specifications.xlsx
Size

2.0MB
MD5

0e8a52ddbc8e82492915ff03731710f2
SHA1

3f8535bccdce71021ac94bc6550ba157eaaceeca
SHA256

656f91c3dfaf474b5f7d78c911a8c3ca1fa950f96dc6d0253bc7fce7041893b9
SHA512

839b5f579a9a96d525ae3aa34bfbec14c4cae4a2ab147eb31e065954059f96fd95bc2248cddc4b1c9520c8ef0a51ab249b423669bd3257dbc79b83a0787f8217

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.183:83

nazareen12.ddns.net:83

Mutex

d2cffe5f-f975-4612-95e5-321d5f1a67bf

Attributes

activate_away_mode
true
backup_connection_host
nazareen12.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-11-09T21:54:08.609335036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
83
default_group
A Good Start
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
d2cffe5f-f975-4612-95e5-321d5f1a67bf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.140.53.183
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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
Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1960 EQNEDT32.EXE
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

708 vbc.exe
640 vbc.exe
1996 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
1960 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

vbc.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA vbc.exe
Suspicious use of SetThreadContext 2 IoCs

Processes:

vbc.exe

description pid process target process

PID 708 set thread context of 640 708 vbc.exe vbc.exe
PID 708 set thread context of 1996 708 vbc.exe vbc.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1960 EQNEDT32.EXE

flow	pid	process
6	1960	EQNEDT32.EXE

pid	process
708	vbc.exe
640	vbc.exe
1996	vbc.exe

pid	process
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE
1960	EQNEDT32.EXE

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

description	pid	process	target process
PID 708 set thread context of 640	708	vbc.exe	vbc.exe
PID 708 set thread context of 1996	708	vbc.exe	vbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1960	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

296 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

vbc.exe

pid process

1996 vbc.exe
1996 vbc.exe
1996 vbc.exe
1996 vbc.exe
1996 vbc.exe
1996 vbc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vbc.exe

pid process

1996 vbc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

vbc.exe

description pid process

Token: SeDebugPrivilege 1996 vbc.exe
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXEvbc.exe

pid process

296 EXCEL.EXE
296 EXCEL.EXE
296 EXCEL.EXE
708 vbc.exe
708 vbc.exe
296 EXCEL.EXE
296 EXCEL.EXE
296 EXCEL.EXE
296 EXCEL.EXE

pid	process
296	EXCEL.EXE

pid	process
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe

pid	process
1996	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1996	vbc.exe

pid	process
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
708	vbc.exe
708	vbc.exe
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 1960 wrote to memory of 708	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 708	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 708	1960	EQNEDT32.EXE	vbc.exe
PID 1960 wrote to memory of 708	1960	EQNEDT32.EXE	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 640	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe
PID 708 wrote to memory of 1996	708	vbc.exe	vbc.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Product and Specifications.xlsx"
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:296

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1960

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:708

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
PID:640

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

Scripting

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
C:\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
C:\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
C:\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
\Users\Public\vbc.exe

MD5
03426261381cc6c80f3a5d915facdaad

SHA1
68488e8388ea7e86b96710f053d69c099017ac83

SHA256
e090c7bce1fef0cecdac7f602a187022502187ad05cf140c66f8d85896c8ce73

SHA512
955e0d0189b4946284b9777d1a0f662dde4e95c91a586b757fe60b8604c11fcaee19d0a94e307930cad6e84149851c3a543cfdd90504b3fc4dc14e47cb3aa6bb

Download Submit
memory/296-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/296-3-0x0000000071771000-0x0000000071773000-memory.dmp

Filesize
8KB

Download
memory/296-2-0x000000002F541000-0x000000002F544000-memory.dmp

Filesize
12KB

Download
memory/640-20-0x000000000041E792-mapping.dmp

Download
memory/640-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/640-42-0x0000000001020000-0x0000000001021000-memory.dmp

Filesize
4KB

Download
memory/640-28-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/640-22-0x000000006C860000-0x000000006CF4E000-memory.dmp

Filesize
6.9MB

Download
memory/708-18-0x0000000000A50000-0x0000000000A53000-memory.dmp

Filesize
12KB

Download
memory/708-11-0x0000000000000000-mapping.dmp

Download
memory/708-14-0x000000006C860000-0x000000006CF4E000-memory.dmp

Filesize
6.9MB

Download
memory/708-17-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

Filesize
4KB

Download
memory/708-15-0x00000000010D0000-0x00000000010D1000-memory.dmp

Filesize
4KB

Download
memory/708-33-0x0000000004D06000-0x0000000004D07000-memory.dmp

Filesize
4KB

Download
memory/708-31-0x0000000004CF5000-0x0000000004D06000-memory.dmp

Filesize
68KB

Download
memory/708-34-0x0000000004D07000-0x0000000004D08000-memory.dmp

Filesize
4KB

Download
memory/1724-6-0x000007FEF7850000-0x000007FEF7ACA000-memory.dmp

Filesize
2.5MB

Download
memory/1960-5-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download
memory/1996-25-0x000000000041E792-mapping.dmp

Download
memory/1996-35-0x00000000003D0000-0x00000000003D5000-memory.dmp

Filesize
20KB

Download
memory/1996-36-0x00000000003F0000-0x00000000003FD000-memory.dmp

Filesize
52KB

Download
memory/1996-37-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/1996-38-0x0000000000450000-0x0000000000469000-memory.dmp

Filesize
100KB

Download
memory/1996-39-0x0000000000480000-0x0000000000483000-memory.dmp

Filesize
12KB

Download
memory/1996-40-0x0000000000680000-0x000000000068F000-memory.dmp

Filesize
60KB

Download
memory/1996-41-0x0000000004D40000-0x0000000004D41000-memory.dmp

Filesize
4KB

Download
memory/1996-27-0x000000006C860000-0x000000006CF4E000-memory.dmp

Filesize
6.9MB

Download
memory/1996-43-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/1996-44-0x0000000000A80000-0x0000000000A86000-memory.dmp

Filesize
24KB

Download
memory/1996-45-0x0000000000AD0000-0x0000000000AD7000-memory.dmp

Filesize
28KB

Download
memory/1996-46-0x0000000000AE0000-0x0000000000AE6000-memory.dmp

Filesize
24KB

Download
memory/1996-47-0x0000000000AF0000-0x0000000000AFD000-memory.dmp

Filesize
52KB

Download
memory/1996-48-0x0000000000B40000-0x0000000000B49000-memory.dmp

Filesize
36KB

Download
memory/1996-49-0x0000000000B50000-0x0000000000B5F000-memory.dmp

Filesize
60KB

Download
memory/1996-50-0x0000000000BB0000-0x0000000000BD9000-memory.dmp

Filesize
164KB

Download

Analysis

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