nanocore | c59cec501a6e4d91587afa1e5582838965a61793c9d5d2f70ab4c53f55c05789

General

Target

silkOrder00110.pdf.exe
Size

758KB
MD5

8bccf6466d765ac2a8f2fd39f0ca3b2a
SHA1

ef497cb26703c929e113c11aeee1a5ca01dfc19d
SHA256

c59cec501a6e4d91587afa1e5582838965a61793c9d5d2f70ab4c53f55c05789
SHA512

10031cda80968ee2b6c9e0639d4613175f3bf432b366a68bf4c70506a3ea4c493eb0e7e6785de046ef57b7a002ca960e763d8f2fbb053af538d5609ede357161

Score

10^/10

nanocore evasion keylogger persistence 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:

ygnygyuh.exeInstallUtil.exe

pid process

1080 ygnygyuh.exe
300 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

silkOrder00110.pdf.exeygnygyuh.exe

pid process

1636 silkOrder00110.pdf.exe
1080 ygnygyuh.exe

pid	process
1080	ygnygyuh.exe
300	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\tgvcftyh = "C:\\Users\\Admin\\AppData\\Roaming\\ygnygyuh.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
Suspicious use of SetThreadContext 1 IoCs

Processes:

ygnygyuh.exe

description pid process target process

PID 1080 set thread context of 300 1080 ygnygyuh.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 1080 set thread context of 300	1080	ygnygyuh.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

silkOrder00110.pdf.exeygnygyuh.exeInstallUtil.exe

pid	process
1636	silkOrder00110.pdf.exe
1636	silkOrder00110.pdf.exe
1636	silkOrder00110.pdf.exe
1636	silkOrder00110.pdf.exe
1636	silkOrder00110.pdf.exe
1080	ygnygyuh.exe
1080	ygnygyuh.exe
300	InstallUtil.exe
300	InstallUtil.exe
300	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

300 InstallUtil.exe

pid	process
300	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

silkOrder00110.pdf.exeygnygyuh.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1636	silkOrder00110.pdf.exe
Token: SeDebugPrivilege	1080	ygnygyuh.exe
Token: SeDebugPrivilege	300	InstallUtil.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

silkOrder00110.pdf.execmd.exeygnygyuh.exe

description	pid	process	target process
PID 1636 wrote to memory of 1412	1636	silkOrder00110.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1412	1636	silkOrder00110.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1412	1636	silkOrder00110.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1412	1636	silkOrder00110.pdf.exe	cmd.exe
PID 1412 wrote to memory of 1660	1412	cmd.exe	reg.exe
PID 1412 wrote to memory of 1660	1412	cmd.exe	reg.exe
PID 1412 wrote to memory of 1660	1412	cmd.exe	reg.exe
PID 1412 wrote to memory of 1660	1412	cmd.exe	reg.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1636 wrote to memory of 1080	1636	silkOrder00110.pdf.exe	ygnygyuh.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe
PID 1080 wrote to memory of 300	1080	ygnygyuh.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\silkOrder00110.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\silkOrder00110.pdf.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "tgvcftyh" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\ygnygyuh.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1412

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "tgvcftyh" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\ygnygyuh.exe"
3⤵
- Adds Run key to start application
PID:1660

C:\Users\Admin\AppData\Roaming\ygnygyuh.exe
"C:\Users\Admin\AppData\Roaming\ygnygyuh.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080

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:300

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

1

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\ygnygyuh.exe
MD5
8bccf6466d765ac2a8f2fd39f0ca3b2a

SHA1
ef497cb26703c929e113c11aeee1a5ca01dfc19d

SHA256
c59cec501a6e4d91587afa1e5582838965a61793c9d5d2f70ab4c53f55c05789

SHA512
10031cda80968ee2b6c9e0639d4613175f3bf432b366a68bf4c70506a3ea4c493eb0e7e6785de046ef57b7a002ca960e763d8f2fbb053af538d5609ede357161

Download Submit
C:\Users\Admin\AppData\Roaming\ygnygyuh.exe
MD5
8bccf6466d765ac2a8f2fd39f0ca3b2a

SHA1
ef497cb26703c929e113c11aeee1a5ca01dfc19d

SHA256
c59cec501a6e4d91587afa1e5582838965a61793c9d5d2f70ab4c53f55c05789

SHA512
10031cda80968ee2b6c9e0639d4613175f3bf432b366a68bf4c70506a3ea4c493eb0e7e6785de046ef57b7a002ca960e763d8f2fbb053af538d5609ede357161

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\ygnygyuh.exe
MD5
8bccf6466d765ac2a8f2fd39f0ca3b2a

SHA1
ef497cb26703c929e113c11aeee1a5ca01dfc19d

SHA256
c59cec501a6e4d91587afa1e5582838965a61793c9d5d2f70ab4c53f55c05789

SHA512
10031cda80968ee2b6c9e0639d4613175f3bf432b366a68bf4c70506a3ea4c493eb0e7e6785de046ef57b7a002ca960e763d8f2fbb053af538d5609ede357161

Download Submit
memory/300-35-0x0000000000380000-0x0000000000399000-memory.dmp

Filesize
100KB

Download
memory/300-29-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/300-30-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/300-31-0x0000000000090000-0x0000000000092000-memory.dmp

Filesize
8KB

Download
memory/300-33-0x00000000002B0000-0x00000000002B5000-memory.dmp

Filesize
20KB

Download
memory/300-34-0x0000000004770000-0x0000000004771000-memory.dmp

Filesize
4KB

Download
memory/300-27-0x000000000041E792-mapping.dmp

Download
memory/300-36-0x0000000000700000-0x0000000000703000-memory.dmp

Filesize
12KB

Download
memory/1080-20-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1080-12-0x0000000000000000-mapping.dmp

Download
memory/1080-22-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/1080-21-0x00000000006B0000-0x00000000006BB000-memory.dmp

Filesize
44KB

Download
memory/1080-16-0x00000000010C0000-0x00000000010C1000-memory.dmp

Filesize
4KB

Download
memory/1080-25-0x00000000003E1000-0x00000000003E2000-memory.dmp

Filesize
4KB

Download
memory/1080-15-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/1412-8-0x0000000000000000-mapping.dmp

Download
memory/1636-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/1636-10-0x00000000047C1000-0x00000000047C2000-memory.dmp

Filesize
4KB

Download
memory/1636-7-0x00000000047C0000-0x00000000047C1000-memory.dmp

Filesize
4KB

Download
memory/1636-6-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/1636-5-0x0000000000310000-0x000000000032E000-memory.dmp

Filesize
120KB

Download
memory/1636-3-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1660-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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