nanocore | c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07

General

Target

MEDUSI492126.pdf.exe
Size

920KB
MD5

3f350480fd99bd2e9c9b32c9fa1bf4e0
SHA1

7fda4a5e9610d3df93ec08c855e73a4b2b0570f4
SHA256

c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07
SHA512

ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9

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:

hgjgfddsxaz.exeInstallUtil.exe

pid process

1336 hgjgfddsxaz.exe
744 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

MEDUSI492126.pdf.exehgjgfddsxaz.exe

pid process

1728 MEDUSI492126.pdf.exe
1336 hgjgfddsxaz.exe

pid	process
1336	hgjgfddsxaz.exe
744	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
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\retyujik = "C:\\Users\\Admin\\AppData\\Roaming\\hgjgfddsxaz.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	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:

hgjgfddsxaz.exe

description pid process target process

PID 1336 set thread context of 744 1336 hgjgfddsxaz.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 1336 set thread context of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

MEDUSI492126.pdf.exehgjgfddsxaz.exeInstallUtil.exe

pid	process
1728	MEDUSI492126.pdf.exe
1728	MEDUSI492126.pdf.exe
1728	MEDUSI492126.pdf.exe
1336	hgjgfddsxaz.exe
1336	hgjgfddsxaz.exe
744	InstallUtil.exe
744	InstallUtil.exe
744	InstallUtil.exe
744	InstallUtil.exe
744	InstallUtil.exe
744	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

744 InstallUtil.exe

pid	process
744	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

MEDUSI492126.pdf.exehgjgfddsxaz.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1728	MEDUSI492126.pdf.exe
Token: SeDebugPrivilege	1336	hgjgfddsxaz.exe
Token: SeDebugPrivilege	744	InstallUtil.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

MEDUSI492126.pdf.execmd.exehgjgfddsxaz.exe

description	pid	process	target process
PID 1728 wrote to memory of 920	1728	MEDUSI492126.pdf.exe	cmd.exe
PID 1728 wrote to memory of 920	1728	MEDUSI492126.pdf.exe	cmd.exe
PID 1728 wrote to memory of 920	1728	MEDUSI492126.pdf.exe	cmd.exe
PID 1728 wrote to memory of 920	1728	MEDUSI492126.pdf.exe	cmd.exe
PID 920 wrote to memory of 1564	920	cmd.exe	reg.exe
PID 920 wrote to memory of 1564	920	cmd.exe	reg.exe
PID 920 wrote to memory of 1564	920	cmd.exe	reg.exe
PID 920 wrote to memory of 1564	920	cmd.exe	reg.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1728 wrote to memory of 1336	1728	MEDUSI492126.pdf.exe	hgjgfddsxaz.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe
PID 1336 wrote to memory of 744	1336	hgjgfddsxaz.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\MEDUSI492126.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\MEDUSI492126.pdf.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "retyujik" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:920

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "retyujik" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"
3⤵
- Adds Run key to start application
PID:1564

C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe
"C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336

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:744

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\hgjgfddsxaz.exe
MD5
3f350480fd99bd2e9c9b32c9fa1bf4e0

SHA1
7fda4a5e9610d3df93ec08c855e73a4b2b0570f4

SHA256
c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07

SHA512
ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9

Download Submit
C:\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe
MD5
3f350480fd99bd2e9c9b32c9fa1bf4e0

SHA1
7fda4a5e9610d3df93ec08c855e73a4b2b0570f4

SHA256
c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07

SHA512
ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\hgjgfddsxaz.exe
MD5
3f350480fd99bd2e9c9b32c9fa1bf4e0

SHA1
7fda4a5e9610d3df93ec08c855e73a4b2b0570f4

SHA256
c914e1cead39ffb086bb87029bcea3673f8159087ef8cd7c1cf49eceba97ee07

SHA512
ca55f5a74ee282e988654b01c500aa93ca51bbef415255e1c850739c603b00f777a86b13935c56efcaef0850e623eacb2c3ea29773897cd88146e16c4c26a3d9

Download Submit
memory/744-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/744-38-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/744-47-0x0000000002170000-0x000000000217F000-memory.dmp

Filesize
60KB

Download
memory/744-46-0x0000000002210000-0x0000000002239000-memory.dmp

Filesize
164KB

Download
memory/744-45-0x0000000002150000-0x000000000215A000-memory.dmp

Filesize
40KB

Download
memory/744-44-0x00000000020C0000-0x00000000020CF000-memory.dmp

Filesize
60KB

Download
memory/744-43-0x00000000020B0000-0x00000000020B9000-memory.dmp

Filesize
36KB

Download
memory/744-42-0x00000000020A0000-0x00000000020AD000-memory.dmp

Filesize
52KB

Download
memory/744-41-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/744-40-0x0000000002040000-0x0000000002047000-memory.dmp

Filesize
28KB

Download
memory/744-39-0x0000000000870000-0x000000000087C000-memory.dmp

Filesize
48KB

Download
memory/744-37-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/744-36-0x0000000000750000-0x000000000075D000-memory.dmp

Filesize
52KB

Download
memory/744-35-0x00000000003F0000-0x00000000003F3000-memory.dmp

Filesize
12KB

Download
memory/744-34-0x0000000000560000-0x0000000000579000-memory.dmp

Filesize
100KB

Download
memory/744-27-0x000000000041E792-mapping.dmp

Download
memory/744-33-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/744-29-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/744-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/744-32-0x0000000004D80000-0x0000000004D81000-memory.dmp

Filesize
4KB

Download
memory/920-8-0x0000000000000000-mapping.dmp

Download
memory/1336-16-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

Filesize
4KB

Download
memory/1336-15-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/1336-12-0x0000000000000000-mapping.dmp

Download
memory/1336-25-0x0000000004851000-0x0000000004852000-memory.dmp

Filesize
4KB

Download
memory/1336-22-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

Filesize
4KB

Download
memory/1336-21-0x00000000005E0000-0x00000000005EB000-memory.dmp

Filesize
44KB

Download
memory/1336-20-0x0000000004850000-0x0000000004851000-memory.dmp

Filesize
4KB

Download
memory/1564-9-0x0000000000000000-mapping.dmp

Download
memory/1728-10-0x0000000004AF1000-0x0000000004AF2000-memory.dmp

Filesize
4KB

Download
memory/1728-3-0x0000000000EB0000-0x0000000000EB1000-memory.dmp

Filesize
4KB

Download
memory/1728-7-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

Filesize
4KB

Download
memory/1728-2-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-6-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1728-5-0x0000000000380000-0x000000000039E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads