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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe

Executes dropped EXE 2 IoCs

pid	Process
2808	a1punf5t2of.exe
4772	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-1-5-21-493223053-2004649691-1575712786-1000\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 2808 set thread context of 4772	2808	a1punf5t2of.exe	96

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4772	a1punf5t2of.exe
4772	a1punf5t2of.exe
4772	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4772	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4772	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2808	2760	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	89
PID 2760 wrote to memory of 2808	2760	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	89
PID 2760 wrote to memory of 2808	2760	74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe	89
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96
PID 2808 wrote to memory of 4772	2808	a1punf5t2of.exe	96

C:\Users\Admin\AppData\Local\Temp\74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe
"C:\Users\Admin\AppData\Local\Temp\74b1e1ff778cc1eb62235985b0c25a3ebdc1f36b76610d5fb42840e1af8c65f7N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - 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:4772

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

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
279KB

MD5
64e4f6582e6205ae25b4abdff4a21d5b

SHA1
1990341421c71078aceeb9c4af67ca38ba822085

SHA256
9401f5cc50c7bfbe36e55a427c8d3e70d99c137fdf6250ba861b98c954ddff9d

SHA512
0d1bec4a974c771d974dff17fd9906d38a9cbc24218a83193b438dfd6c91c6d52d33c8ae59af095e326785a18eeb498f711787570f2ecbe7c7020ea4a9a0d5e6

Download Submit
memory/2760-21-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-1-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-2-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-3-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-4-0x0000000074AC2000-0x0000000074AC3000-memory.dmp

Filesize
4KB

Download
memory/2760-5-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-6-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-7-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2760-0-0x0000000074AC2000-0x0000000074AC3000-memory.dmp

Filesize
4KB

Download
memory/2808-24-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2808-23-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2808-22-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2808-25-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/2808-38-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-31-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4772-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4772-32-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-33-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-35-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-36-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download
memory/4772-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4772-39-0x0000000074AC0000-0x0000000075071000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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