nanocore | f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7

General

Target

f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe
Size

279KB
MD5

20a311b4d4e248c0f3845293df9976c5
SHA1

cfbf38d13475e96d3f5897fb8ee1c8be9ec8683d
SHA256

f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7
SHA512

e38e0f92892fcf3a33fdb0f3fe27c90535cd3ae136f46255b1f23ddbe0cbd3d1831c99871ee35a289860e9f2938614bc36e5e2fa6f6f0ad3f20adee91f606dda
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fc:boSeGUA5YZazpXUmZhZ6E

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
2704	a1punf5t2of.exe
2652	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe
2704	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.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 2704 set thread context of 2652	2704	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	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.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
2652	a1punf5t2of.exe
2652	a1punf5t2of.exe
2652	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2652	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2936 wrote to memory of 2704	2936	f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe	31
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32
PID 2704 wrote to memory of 2652	2704	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe
"C:\Users\Admin\AppData\Local\Temp\f862f85bc053d246be5d8bbec4a0486bec53a1168d5f06ffa7223d6fa3afc2d7.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- 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:2704
- - 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:2652

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
30844b2bc609ec728bf453265a42ceab

SHA1
661832027f16d1c3ad89029265470dae07a507b5

SHA256
7827110f451f1871c0da01cb715673fdb26b5a607bd4f0d6629be2dedf26af95

SHA512
3df99c28a369530b82b51f8e865ad8c9f4288284496fa9e026ece50e4cb2b49d67c375970a419efa03717c0e15133d8b4c969e81ff3fd140080988e1149069b7

Download Submit
memory/2652-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2652-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-39-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2652-41-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2704-15-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-16-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-19-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-43-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-17-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-21-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-18-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2704-20-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-2-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-0-0x0000000074BB1000-0x0000000074BB2000-memory.dmp

Filesize
4KB

Download
memory/2936-1-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-5-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-4-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-14-0x0000000074BB0000-0x000000007515B000-memory.dmp

Filesize
5.7MB

Download
memory/2936-3-0x0000000074BB0000-0x000000007515B000-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