nanocore | b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28

General

Target

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
Size

254KB
MD5

03efa084cc3f8f51111e8d6cb79dd6c0
SHA1

2acd95f4592909b4cf1ba7bc2665a829384eed3b
SHA256

b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28
SHA512

811e958a3a3f6d3218749ac69e5aa731e1e371503109dbdde28fa36dd81cc7c39328288b9535ad94abef8c3fb2c9f856c572e2319ed48f77b7a1faa34a7c5e3a
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4i:EeGUA5YZazpXUmZhPi

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
2072	a1punf5t2of.exe
2632	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
2072	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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.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 2072 set thread context of 2632	2072	a1punf5t2of.exe	31

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2632	a1punf5t2of.exe
2632	a1punf5t2of.exe
2632	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2632	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 1996 wrote to memory of 2072	1996	b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe	30
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31
PID 2072 wrote to memory of 2632	2072	a1punf5t2of.exe	31

C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe
"C:\Users\Admin\AppData\Local\Temp\b879ca5df39408f05fb53326c20cad89dcb01cfa9836beec87c6ceb57527ef28N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- 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:2072
- - 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:2632

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

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Downloads

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

Filesize
254KB

MD5
fd8131473f77d9a6266cc65ccbe0daa9

SHA1
eff0da63ff7aca38b693689f7937e0305639c3fb

SHA256
058b1c2fbdd1004b9bcd3221f71b96043b853b347c0c2dc7adbe9f4cd0ed8945

SHA512
38e39f228eff827108fef1cc8f44ee3c5bfaa44914d8c503b50e15f04b48aaa21dac6c11c0c54f9aa6ca693ef3d007f21d35f374a0533a3760a838a6f7d99169

Download Submit
memory/1996-0-0x0000000074F41000-0x0000000074F42000-memory.dmp

Filesize
4KB

Download
memory/1996-1-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-2-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-3-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-4-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-5-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-6-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/1996-15-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-17-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-16-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-18-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-19-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-20-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2072-42-0x0000000074F40000-0x00000000754EB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-40-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2632-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads