nanocore | 8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c

General

Target

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe
Size

282KB
MD5

2527d1f89a501ab710cf8b081de162b3
SHA1

b7d1eec71e0b564268593c1e02d8e34977c4d03d
SHA256

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c
SHA512

b595b4c399854973f2363159f170d29e5f52166765d507a6a2e66febb389d4911c3809d424225aad83f2eb8d029a9c6e0774909e5359f3d03b2899109f8017d0
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfpc:boSeGUA5YZazpXUmZhZ6ST

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

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

Processes:

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe

Executes dropped EXE 2 IoCs

Processes:

a1punf5t2of.exea1punf5t2of.exe

pid	Process
1084	a1punf5t2of.exe
4896	a1punf5t2of.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

a1punf5t2of.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

a1punf5t2of.exe

description	pid	Process	procid_target
PID 1084 set thread context of 4896	1084	a1punf5t2of.exe	87

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

Processes:

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exea1punf5t2of.exea1punf5t2of.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.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

Processes:

a1punf5t2of.exe

pid	Process
4896	a1punf5t2of.exe
4896	a1punf5t2of.exe
4896	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

a1punf5t2of.exe

pid	Process
4896	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a1punf5t2of.exe

description	pid	Process
Token: SeDebugPrivilege	4896	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exea1punf5t2of.exe

description	pid	Process	procid_target
PID 5108 wrote to memory of 1084	5108	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe	86
PID 5108 wrote to memory of 1084	5108	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe	86
PID 5108 wrote to memory of 1084	5108	8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe	86
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87
PID 1084 wrote to memory of 4896	1084	a1punf5t2of.exe	87

C:\Users\Admin\AppData\Local\Temp\8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe
"C:\Users\Admin\AppData\Local\Temp\8ef413512d3d62e44760c3b3cbea94d2591b0e082f2bc3ffa832e93d5d13016c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5108
- 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:1084
- - 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:4896

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
282KB

MD5
a41aede0fa4aa96fa262ddd634f472dc

SHA1
93c9b248f84ad1753bcc7cfd761e5421b340c424

SHA256
c4157645a877567d71ef155b243953a7da0ada5c7944e9377b63557c7c0e803f

SHA512
f39954e03d89194205356fe498e0cd52e214c594e6127fe67b0be5188c027706355395b111ef7b27102c7d348675c29f35f67ab60dbbb54ecb5f6cdaf4ea8ddf

Download Submit
memory/1084-23-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-40-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-28-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-27-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-26-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-25-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-24-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/1084-22-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4896-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4896-41-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-38-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-37-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-35-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-34-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5108-4-0x0000000074F32000-0x0000000074F33000-memory.dmp

Filesize
4KB

Download
memory/5108-0-0x0000000074F32000-0x0000000074F33000-memory.dmp

Filesize
4KB

Download
memory/5108-2-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-3-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-7-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-5-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-6-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-1-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download
memory/5108-21-0x0000000074F30000-0x00000000754E1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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