nanocore | ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a

General

Target

ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe
Size

255KB
MD5

d494a9f8938f4c23ec8d83d60376011a
SHA1

4e5ba0dec506040ace872a37002783c1d0b4216c
SHA256

ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a
SHA512

beb93e6b994429d477db26e9201fa6ee6b59f05bed7ad337dc0771731430ba9a758b410483b8a526932bca4393da0aa3068a224f50fe203dd87002010116a968
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQSp:EeGUA5YZazpXUmZhdp

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe

Executes dropped EXE 2 IoCs

pid	Process
1508	a1punf5t2of.exe
5080	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.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 1508 set thread context of 5080	1508	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	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.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
5080	a1punf5t2of.exe
5080	a1punf5t2of.exe
5080	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5080	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5080	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3528 wrote to memory of 1508	3528	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe	95
PID 3528 wrote to memory of 1508	3528	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe	95
PID 3528 wrote to memory of 1508	3528	ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe	95
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96
PID 1508 wrote to memory of 5080	1508	a1punf5t2of.exe	96

C:\Users\Admin\AppData\Local\Temp\ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe
"C:\Users\Admin\AppData\Local\Temp\ab0dc78ac1e647773295ef4f971e3c769b26ea3ba9bb912704d10af43eb6ac5a.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3528
- 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:1508
- - 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:5080

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
255KB

MD5
4e83575fc12de30a500315d3f1501d51

SHA1
47896a71f6e7e3175f60fb553ef9bcbc63265de3

SHA256
015ca1ec37599d47a29c8c92a3964e7b5b6153b5e80eb443dbe89e8fef1ca4bc

SHA512
99823f8798ce0bd0cb978be713514d81d07e56ab49f9e03baa558d8de1f87ab8ed9e644d884af5bec02e08c569d255ec601b32c34a4e66de4ea3767677e04f90

Download Submit
memory/1508-40-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-27-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-26-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-25-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-21-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-24-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1508-22-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-6-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-7-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-0-0x0000000074FE2000-0x0000000074FE3000-memory.dmp

Filesize
4KB

Download
memory/3528-23-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-5-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-4-0x0000000074FE2000-0x0000000074FE3000-memory.dmp

Filesize
4KB

Download
memory/3528-3-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-2-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/3528-1-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5080-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5080-33-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-35-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-34-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-37-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-38-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/5080-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5080-41-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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