nanocore | 618d343a6d7f54a0bfd917555c79c6a777b10a35fc2da0d75f6d85354de40637

General

Target

PO#4018-308875.pdf.exe
Size

627KB
MD5

ea28f2d01808072dbe45804f514ef905
SHA1

771ff981d42d6c7fc3550de8cb109e3311b0e0fa
SHA256

618d343a6d7f54a0bfd917555c79c6a777b10a35fc2da0d75f6d85354de40637
SHA512

14c8f4c649f60238a1398bf28cd8a1a1c94d14b74d888a26bca537317de1d1beada94a6fdb5d51a3ad30ee4c07e389e0fe6eb988e29df485808fd19114715d16

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:

tgfcdsxazs.exeInstallUtil.exe

pid process

2004 tgfcdsxazs.exe
1696 InstallUtil.exe

pid	process
2004	tgfcdsxazs.exe
1696	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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\kolkmjnhgf = "C:\\Users\\Admin\\AppData\\Roaming\\tgfcdsxazs.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:

tgfcdsxazs.exe

description pid process target process

PID 2004 set thread context of 1696 2004 tgfcdsxazs.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 2004 set thread context of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

PO#4018-308875.pdf.exetgfcdsxazs.exeInstallUtil.exe

pid	process
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
3884	PO#4018-308875.pdf.exe
2004	tgfcdsxazs.exe
2004	tgfcdsxazs.exe
1696	InstallUtil.exe
1696	InstallUtil.exe
1696	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

1696 InstallUtil.exe

pid	process
1696	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO#4018-308875.pdf.exetgfcdsxazs.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	3884	PO#4018-308875.pdf.exe
Token: SeDebugPrivilege	2004	tgfcdsxazs.exe
Token: SeDebugPrivilege	1696	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PO#4018-308875.pdf.execmd.exetgfcdsxazs.exe

description	pid	process	target process
PID 3884 wrote to memory of 4036	3884	PO#4018-308875.pdf.exe	cmd.exe
PID 3884 wrote to memory of 4036	3884	PO#4018-308875.pdf.exe	cmd.exe
PID 3884 wrote to memory of 4036	3884	PO#4018-308875.pdf.exe	cmd.exe
PID 4036 wrote to memory of 188	4036	cmd.exe	reg.exe
PID 4036 wrote to memory of 188	4036	cmd.exe	reg.exe
PID 4036 wrote to memory of 188	4036	cmd.exe	reg.exe
PID 3884 wrote to memory of 2004	3884	PO#4018-308875.pdf.exe	tgfcdsxazs.exe
PID 3884 wrote to memory of 2004	3884	PO#4018-308875.pdf.exe	tgfcdsxazs.exe
PID 3884 wrote to memory of 2004	3884	PO#4018-308875.pdf.exe	tgfcdsxazs.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe
PID 2004 wrote to memory of 1696	2004	tgfcdsxazs.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO#4018-308875.pdf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3884

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "kolkmjnhgf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\tgfcdsxazs.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4036

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "kolkmjnhgf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\tgfcdsxazs.exe"
3⤵
- Adds Run key to start application
PID:188

C:\Users\Admin\AppData\Roaming\tgfcdsxazs.exe
"C:\Users\Admin\AppData\Roaming\tgfcdsxazs.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004

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:1696

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\tgfcdsxazs.exe
MD5
ea28f2d01808072dbe45804f514ef905

SHA1
771ff981d42d6c7fc3550de8cb109e3311b0e0fa

SHA256
618d343a6d7f54a0bfd917555c79c6a777b10a35fc2da0d75f6d85354de40637

SHA512
14c8f4c649f60238a1398bf28cd8a1a1c94d14b74d888a26bca537317de1d1beada94a6fdb5d51a3ad30ee4c07e389e0fe6eb988e29df485808fd19114715d16

Download Submit
C:\Users\Admin\AppData\Roaming\tgfcdsxazs.exe
MD5
ea28f2d01808072dbe45804f514ef905

SHA1
771ff981d42d6c7fc3550de8cb109e3311b0e0fa

SHA256
618d343a6d7f54a0bfd917555c79c6a777b10a35fc2da0d75f6d85354de40637

SHA512
14c8f4c649f60238a1398bf28cd8a1a1c94d14b74d888a26bca537317de1d1beada94a6fdb5d51a3ad30ee4c07e389e0fe6eb988e29df485808fd19114715d16

Download Submit
memory/188-11-0x0000000000000000-mapping.dmp

Download
memory/1696-39-0x0000000005890000-0x00000000058A9000-memory.dmp

Filesize
100KB

Download
memory/1696-34-0x00000000051D0000-0x00000000051D1000-memory.dmp

Filesize
4KB

Download
memory/1696-31-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/1696-37-0x0000000004D20000-0x0000000004D21000-memory.dmp

Filesize
4KB

Download
memory/1696-38-0x0000000004FA0000-0x0000000004FA5000-memory.dmp

Filesize
20KB

Download
memory/1696-28-0x000000000041E792-mapping.dmp

Download
memory/1696-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1696-40-0x00000000059B0000-0x00000000059B3000-memory.dmp

Filesize
12KB

Download
memory/1696-41-0x0000000005070000-0x0000000005071000-memory.dmp

Filesize
4KB

Download
memory/2004-23-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/2004-13-0x0000000000000000-mapping.dmp

Download
memory/2004-25-0x0000000004EA0000-0x0000000004EA1000-memory.dmp

Filesize
4KB

Download
memory/2004-26-0x00000000056B1000-0x00000000056B2000-memory.dmp

Filesize
4KB

Download
memory/2004-24-0x0000000005560000-0x000000000556B000-memory.dmp

Filesize
44KB

Download
memory/2004-16-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/3884-12-0x0000000005441000-0x0000000005442000-memory.dmp

Filesize
4KB

Download
memory/3884-2-0x0000000073A20000-0x000000007410E000-memory.dmp

Filesize
6.9MB

Download
memory/3884-9-0x0000000005440000-0x0000000005441000-memory.dmp

Filesize
4KB

Download
memory/3884-8-0x0000000007E40000-0x0000000007E41000-memory.dmp

Filesize
4KB

Download
memory/3884-7-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/3884-6-0x00000000053B0000-0x00000000053CE000-memory.dmp

Filesize
120KB

Download
memory/3884-5-0x0000000005490000-0x0000000005491000-memory.dmp

Filesize
4KB

Download
memory/3884-3-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/4036-10-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads