nanocore | 98f6d65cade358f4260e3aad9fbe81b9efc572a5572b4e7ee8969e67c890c945

General

Target

4d895b84b2264febb49c32552c9effb0N.exe
Size

280KB
MD5

4d895b84b2264febb49c32552c9effb0
SHA1

3a32ec33ac7489274f8653959541bf88b29491f5
SHA256

98f6d65cade358f4260e3aad9fbe81b9efc572a5572b4e7ee8969e67c890c945
SHA512

a91742c4bc68304bee2cc2a8c466061d08012c3f050ab27369dd4b5afd958e318b4444ab48a432236105ed0be4cff1835480e262bd1c11b70c833f27c0337bd7
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fK0a:boSeGUA5YZazpXUmZhZ6S/

Score

10^/10

nanocore 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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	4d895b84b2264febb49c32552c9effb0N.exe

Executes dropped EXE 2 IoCs

pid	Process
2792	a1punf5t2of.exe
1336	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-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	4d895b84b2264febb49c32552c9effb0N.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 2792 set thread context of 1336	2792	a1punf5t2of.exe	95

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1336	a1punf5t2of.exe
1336	a1punf5t2of.exe
1336	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1336	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 2792	1228	4d895b84b2264febb49c32552c9effb0N.exe	94
PID 1228 wrote to memory of 2792	1228	4d895b84b2264febb49c32552c9effb0N.exe	94
PID 1228 wrote to memory of 2792	1228	4d895b84b2264febb49c32552c9effb0N.exe	94
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95
PID 2792 wrote to memory of 1336	2792	a1punf5t2of.exe	95

C:\Users\Admin\AppData\Local\Temp\4d895b84b2264febb49c32552c9effb0N.exe
"C:\Users\Admin\AppData\Local\Temp\4d895b84b2264febb49c32552c9effb0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1336

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
280KB

MD5
595546b06914e5da8b0e3e39a8239029

SHA1
4e4cbb6a378dece39bd1f85213d131053a874bb7

SHA256
b3205c410eb0969a2fdb7f68eef7d45bcf199dcb6e8f602f1d085f3b3e58a23e

SHA512
7e90c4c2a7574e4d3aaf662bcb529c25220f8ba7c33c041c56a7b5945f4319fa36ecc620f23a700c68fc996730a7511c0e5ea81bd1b7b7706eaa25d13f7377d7

Download Submit
memory/1228-18-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1228-1-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1228-2-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1228-3-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1228-0-0x00000000753D2000-0x00000000753D3000-memory.dmp

Filesize
4KB

Download
memory/1336-29-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1336-27-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1336-36-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1336-35-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1336-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1336-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1336-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1336-31-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/1336-28-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-17-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-20-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-32-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-34-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-21-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/2792-19-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads