nanocore | 43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767

General

Target

PO#4018-308875.exe
Size

700KB
MD5

26b17b353c8950ca0a55e1ea21678d9e
SHA1

c5f2e80f53a312bd1b8dd3bba438af27a4ba44e3
SHA256

43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767
SHA512

b90a04a218ae54201a4ab25848c91dc197c829c90beb4de4b8cc5f9f54928a962151129796181b9dbf48da1be6bb7294f878e3bdf020373b9df2c8a759e8be23

Score

10^/10

nanocore evasion keylogger persistence ransomware spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.162.88.26:20911

fenixalec.ddns.net:20911

Mutex

4c844ad7-de78-4c04-815b-d468ebb89811

Attributes

activate_away_mode
true
backup_connection_host
fenixalec.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-10-25T21:31:56.793896536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
20911
default_group
2021 GREATEST
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
4c844ad7-de78-4c04-815b-d468ebb89811
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
185.162.88.26
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
Executes dropped EXE 2 IoCs

Processes:

hjfufkimd.exeInstallUtil.exe

pid process

2924 hjfufkimd.exe
3948 InstallUtil.exe

pid	process
2924	hjfufkimd.exe
3948	InstallUtil.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\erwtvsfvc = "C:\\Users\\Admin\\AppData\\Roaming\\hjfufkimd.exe"	reg.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

InstallUtil.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082
Suspicious use of SetThreadContext 1 IoCs

Processes:

hjfufkimd.exe

description pid process target process

PID 2924 set thread context of 3948 2924 hjfufkimd.exe InstallUtil.exe

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

description	pid	process	target process
PID 2924 set thread context of 3948	2924	hjfufkimd.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

PO#4018-308875.exehjfufkimd.exeInstallUtil.exe

pid	process
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
640	PO#4018-308875.exe
2924	hjfufkimd.exe
2924	hjfufkimd.exe
3948	InstallUtil.exe
3948	InstallUtil.exe
3948	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

3948 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO#4018-308875.exehjfufkimd.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 640 PO#4018-308875.exe
Token: SeDebugPrivilege 2924 hjfufkimd.exe
Token: SeDebugPrivilege 3948 InstallUtil.exe

pid	process
3948	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	640	PO#4018-308875.exe
Token: SeDebugPrivilege	2924	hjfufkimd.exe
Token: SeDebugPrivilege	3948	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PO#4018-308875.execmd.exehjfufkimd.exe

description	pid	process	target process
PID 640 wrote to memory of 3820	640	PO#4018-308875.exe	cmd.exe
PID 640 wrote to memory of 3820	640	PO#4018-308875.exe	cmd.exe
PID 640 wrote to memory of 3820	640	PO#4018-308875.exe	cmd.exe
PID 3820 wrote to memory of 3156	3820	cmd.exe	reg.exe
PID 3820 wrote to memory of 3156	3820	cmd.exe	reg.exe
PID 3820 wrote to memory of 3156	3820	cmd.exe	reg.exe
PID 640 wrote to memory of 2924	640	PO#4018-308875.exe	hjfufkimd.exe
PID 640 wrote to memory of 2924	640	PO#4018-308875.exe	hjfufkimd.exe
PID 640 wrote to memory of 2924	640	PO#4018-308875.exe	hjfufkimd.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe
PID 2924 wrote to memory of 3948	2924	hjfufkimd.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.exe
"C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "erwtvsfvc" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hjfufkimd.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3820

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "erwtvsfvc" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hjfufkimd.exe"
3⤵
- Adds Run key to start application
PID:3156

C:\Users\Admin\AppData\Roaming\hjfufkimd.exe
"C:\Users\Admin\AppData\Roaming\hjfufkimd.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2924

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Roaming\hjfufkimd.exe
MD5
26b17b353c8950ca0a55e1ea21678d9e

SHA1
c5f2e80f53a312bd1b8dd3bba438af27a4ba44e3

SHA256
43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767

SHA512
b90a04a218ae54201a4ab25848c91dc197c829c90beb4de4b8cc5f9f54928a962151129796181b9dbf48da1be6bb7294f878e3bdf020373b9df2c8a759e8be23

Download Submit
C:\Users\Admin\AppData\Roaming\hjfufkimd.exe
MD5
26b17b353c8950ca0a55e1ea21678d9e

SHA1
c5f2e80f53a312bd1b8dd3bba438af27a4ba44e3

SHA256
43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767

SHA512
b90a04a218ae54201a4ab25848c91dc197c829c90beb4de4b8cc5f9f54928a962151129796181b9dbf48da1be6bb7294f878e3bdf020373b9df2c8a759e8be23

Download Submit
memory/640-7-0x0000000001520000-0x0000000001521000-memory.dmp

Filesize
4KB

Download
memory/640-5-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/640-9-0x0000000005520000-0x0000000005521000-memory.dmp

Filesize
4KB

Download
memory/640-2-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/640-3-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/640-12-0x0000000005521000-0x0000000005522000-memory.dmp

Filesize
4KB

Download
memory/640-8-0x0000000007D90000-0x0000000007D91000-memory.dmp

Filesize
4KB

Download
memory/640-6-0x00000000052D0000-0x00000000052EE000-memory.dmp

Filesize
120KB

Download
memory/2924-23-0x0000000004E00000-0x0000000004E01000-memory.dmp

Filesize
4KB

Download
memory/2924-16-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-13-0x0000000000000000-mapping.dmp

Download
memory/2924-24-0x0000000004E50000-0x0000000004E5B000-memory.dmp

Filesize
44KB

Download
memory/2924-25-0x0000000004E60000-0x0000000004E61000-memory.dmp

Filesize
4KB

Download
memory/2924-26-0x0000000004E01000-0x0000000004E02000-memory.dmp

Filesize
4KB

Download
memory/3156-11-0x0000000000000000-mapping.dmp

Download
memory/3820-10-0x0000000000000000-mapping.dmp

Download
memory/3948-28-0x000000000041E792-mapping.dmp

Download
memory/3948-31-0x0000000073190000-0x000000007387E000-memory.dmp

Filesize
6.9MB

Download
memory/3948-32-0x0000000000540000-0x0000000000578000-memory.dmp

Filesize
224KB

Download
memory/3948-34-0x0000000004E90000-0x0000000004E91000-memory.dmp

Filesize
4KB

Download
memory/3948-37-0x00000000049F0000-0x00000000049F1000-memory.dmp

Filesize
4KB

Download
memory/3948-38-0x0000000004DF0000-0x0000000004DF5000-memory.dmp

Filesize
20KB

Download
memory/3948-39-0x0000000005690000-0x00000000056A9000-memory.dmp

Filesize
100KB

Download
memory/3948-40-0x00000000057B0000-0x00000000057B3000-memory.dmp

Filesize
12KB

Download
memory/3948-41-0x00000000049B0000-0x00000000049B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads