nanocore | 761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22

General

Target

PO#4018-308875.pdf.exe
Size

765KB
MD5

d90049e2aff303588e499820e0d9078c
SHA1

1153f298db7e6aeed9c3a55c907dfa474ae9155f
SHA256

761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22
SHA512

0ab4d1ccd24fa3174750b69f929c8dc34334f88941f1708e5edc2fdb7498636aa0c441bb9bb7e54a1ebb246500ddbfddbdbccfd4fe1ec7ee16c14229af1f9e89

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:

gfrdeswaq.exeInstallUtil.exe

pid process

924 gfrdeswaq.exe
572 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

PO#4018-308875.pdf.exegfrdeswaq.exe

pid process

1636 PO#4018-308875.pdf.exe
924 gfrdeswaq.exe

pid	process
924	gfrdeswaq.exe
572	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\olkkmmxxzaa = "C:\\Users\\Admin\\AppData\\Roaming\\gfrdeswaq.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:

gfrdeswaq.exe

description pid process target process

PID 924 set thread context of 572 924 gfrdeswaq.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 924 set thread context of 572	924	gfrdeswaq.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

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

pid	process
1636	PO#4018-308875.pdf.exe
1636	PO#4018-308875.pdf.exe
1636	PO#4018-308875.pdf.exe
1636	PO#4018-308875.pdf.exe
1636	PO#4018-308875.pdf.exe
924	gfrdeswaq.exe
924	gfrdeswaq.exe
572	InstallUtil.exe
572	InstallUtil.exe
572	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

572 InstallUtil.exe

pid	process
572	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	1636	PO#4018-308875.pdf.exe
Token: SeDebugPrivilege	924	gfrdeswaq.exe
Token: SeDebugPrivilege	572	InstallUtil.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

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

description	pid	process	target process
PID 1636 wrote to memory of 1436	1636	PO#4018-308875.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1436	1636	PO#4018-308875.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1436	1636	PO#4018-308875.pdf.exe	cmd.exe
PID 1636 wrote to memory of 1436	1636	PO#4018-308875.pdf.exe	cmd.exe
PID 1436 wrote to memory of 1016	1436	cmd.exe	reg.exe
PID 1436 wrote to memory of 1016	1436	cmd.exe	reg.exe
PID 1436 wrote to memory of 1016	1436	cmd.exe	reg.exe
PID 1436 wrote to memory of 1016	1436	cmd.exe	reg.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 1636 wrote to memory of 924	1636	PO#4018-308875.pdf.exe	gfrdeswaq.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.exe	InstallUtil.exe
PID 924 wrote to memory of 572	924	gfrdeswaq.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⤵
- 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 "olkkmmxxzaa" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\gfrdeswaq.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "olkkmmxxzaa" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\gfrdeswaq.exe"
3⤵
- Adds Run key to start application
PID:1016

C:\Users\Admin\AppData\Roaming\gfrdeswaq.exe
"C:\Users\Admin\AppData\Roaming\gfrdeswaq.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:924

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:572

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

Replay Monitor

Loading Replay Monitor...

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\gfrdeswaq.exe
MD5
d90049e2aff303588e499820e0d9078c

SHA1
1153f298db7e6aeed9c3a55c907dfa474ae9155f

SHA256
761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22

SHA512
0ab4d1ccd24fa3174750b69f929c8dc34334f88941f1708e5edc2fdb7498636aa0c441bb9bb7e54a1ebb246500ddbfddbdbccfd4fe1ec7ee16c14229af1f9e89

Download Submit
C:\Users\Admin\AppData\Roaming\gfrdeswaq.exe
MD5
d90049e2aff303588e499820e0d9078c

SHA1
1153f298db7e6aeed9c3a55c907dfa474ae9155f

SHA256
761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22

SHA512
0ab4d1ccd24fa3174750b69f929c8dc34334f88941f1708e5edc2fdb7498636aa0c441bb9bb7e54a1ebb246500ddbfddbdbccfd4fe1ec7ee16c14229af1f9e89

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

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\gfrdeswaq.exe
MD5
d90049e2aff303588e499820e0d9078c

SHA1
1153f298db7e6aeed9c3a55c907dfa474ae9155f

SHA256
761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22

SHA512
0ab4d1ccd24fa3174750b69f929c8dc34334f88941f1708e5edc2fdb7498636aa0c441bb9bb7e54a1ebb246500ddbfddbdbccfd4fe1ec7ee16c14229af1f9e89

Download Submit
memory/572-29-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/572-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/572-32-0x0000000000620000-0x0000000000625000-memory.dmp

Filesize
20KB

Download
memory/572-27-0x000000000041E792-mapping.dmp

Download
memory/572-33-0x0000000000680000-0x0000000000699000-memory.dmp

Filesize
100KB

Download
memory/572-34-0x0000000000630000-0x0000000000633000-memory.dmp

Filesize
12KB

Download
memory/572-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/572-35-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/924-20-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/924-12-0x0000000000000000-mapping.dmp

Download
memory/924-22-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

Download
memory/924-21-0x00000000002F0000-0x00000000002FB000-memory.dmp

Filesize
44KB

Download
memory/924-16-0x0000000000B50000-0x0000000000B51000-memory.dmp

Filesize
4KB

Download
memory/924-25-0x0000000002241000-0x0000000002242000-memory.dmp

Filesize
4KB

Download
memory/924-15-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/1016-9-0x0000000000000000-mapping.dmp

Download
memory/1436-8-0x0000000000000000-mapping.dmp

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

Filesize
6.9MB

Download
memory/1636-10-0x0000000004B31000-0x0000000004B32000-memory.dmp

Filesize
4KB

Download
memory/1636-7-0x0000000004B30000-0x0000000004B31000-memory.dmp

Filesize
4KB

Download
memory/1636-6-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/1636-5-0x0000000000290000-0x00000000002AE000-memory.dmp

Filesize
120KB

Download
memory/1636-3-0x0000000000D00000-0x0000000000D01000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads