nanocore | 74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7

General

Target

74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe
Size

279KB
MD5

b9f4042ddb17c8bbc86343cf1350a710
SHA1

c76cee0cde4e021fba79849dcff4045e046d584c
SHA256

74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7
SHA512

55bcca336a6713ea1318c84aa94c01459497007b098cfc87b8e8ec558ea182985475c31f22116d9d678b0fddac699a309c827d7dc950e09844cf12a0339caa45
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fr:boSeGUA5YZazpXUmZhZ6z

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
default_group
Default
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
primary_dns_server
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
Nanocore family
nanocore

Executes dropped EXE 2 IoCs

pid	Process
2440	a1punf5t2of.exe
2500	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe
2440	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2440 set thread context of 2500	2440	a1punf5t2of.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2500	a1punf5t2of.exe
2500	a1punf5t2of.exe
2500	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2500	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2668 wrote to memory of 2440	2668	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	31
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32
PID 2440 wrote to memory of 2500	2440	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe
"C:\Users\Admin\AppData\Local\Temp\74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
279KB

MD5
9199b1ed60a93e8d4e39e0543078e824

SHA1
41b05f84de70ee5e55d790e39210f209ca4d6cfe

SHA256
2e958440d883ebc2c2ff9cc37a4b9f1b9d5f1b07e6380eb7d2afd62b50c65cad

SHA512
217663b8bf1af28d0791e3ca8e30ffa73f3b303b5ca83712a03044fafd8afa57550a98fc3d38c89d0ec9ebf60e1080b37b664069fa579e4ffd75afa090c3f0ca

Download Submit
memory/2440-15-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2440-41-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2440-19-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2440-18-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2440-17-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2440-16-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2500-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2500-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2500-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2668-0-0x0000000074851000-0x0000000074852000-memory.dmp

Filesize
4KB

Download
memory/2668-2-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-14-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-3-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-4-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-5-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download
memory/2668-1-0x0000000074850000-0x0000000074DFB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads