nanocore | 04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f

General

Target

04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
Size

810KB
MD5

43052439d057549a3dbc5307424927d5
SHA1

69bcbb9df5b4dbc50839a96ba64a03b534919f06
SHA256

04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f
SHA512

b3592d217d5e413a08c62e2aaac621e056497af8cedf3d6a736f31343abe80637ce9eb11a29cd0f81ae86e6ffdea7e0d50b34129b22855dfde5f6fd5a1415f54
SSDEEP

24576:A85rNl0k15HDxrUH3sY20fNjaj5sO9VaQSs:A8nl0A5HDx90fNk5sO9nl

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes

activate_away_mode
true
backup_connection_host
194,147,5,75
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-04-29T03:26:40.572298236Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5899
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
b8aebc29-8c64-444f-99e6-dc4122e9bbfc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brewsterchristophe.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2760	powershell.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Manager = "C:\\Program Files (x86)\\DHCP Manager\\dhcpmgr.exe"	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.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	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
File opened for modification	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

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 6 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	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2868	schtasks.exe
1944	schtasks.exe
584	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2760	powershell.exe
2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2760	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	31
PID 2532 wrote to memory of 2760	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	31
PID 2532 wrote to memory of 2760	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	31
PID 2532 wrote to memory of 2760	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	31
PID 2532 wrote to memory of 2868	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	33
PID 2532 wrote to memory of 2868	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	33
PID 2532 wrote to memory of 2868	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	33
PID 2532 wrote to memory of 2868	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	33
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2532 wrote to memory of 2644	2532	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	35
PID 2644 wrote to memory of 1944	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	36
PID 2644 wrote to memory of 1944	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	36
PID 2644 wrote to memory of 1944	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	36
PID 2644 wrote to memory of 1944	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	36
PID 2644 wrote to memory of 584	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	38
PID 2644 wrote to memory of 584	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	38
PID 2644 wrote to memory of 584	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	38
PID 2644 wrote to memory of 584	2644	04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe	38

C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
"C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TYWfRu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYWfRu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp426D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe
  "C:\Users\Admin\AppData\Local\Temp\04a1c3845c480911e02cb87706b64ec7c433234e4f9f5d42cde4a737213c916f.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp44AE.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1944
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp44DE.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmp426D.tmp

Filesize
1KB

MD5
91b99ac96bbddf92a663c68582aa7c83

SHA1
de17357e005ae0a6e0b9cdd00a8f1149409fdcd0

SHA256
22bc478b14219fd346f07d12a26ad308fc30b3e8e69c5ef91709f49348fb283c

SHA512
0f797adff9a09c5eb13a6ef87d3c340ba65cfcb8166d5be7ddf3c15098ad92cd8b637f2b58d9623a4f34ab3daf7dbe7a79b3fa06bb079bbe1b5d36c6c3682013

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp44AE.tmp

Filesize
1KB

MD5
a591a76fa75368c8204f7b06eb32b266

SHA1
eeb86563fae956e79a000f489962101a332b6a09

SHA256
a2ce4b2c85707d41c214e7f2631e45d9c05e2e8980761a4f402849ae76ef7ff2

SHA512
fef6b7d5fcacf0e769703cee1a53aa62274ccce2534c9a340888c1c442adad6d9de572b9a66a726bf90c6deb3e5a2ce4cd9caf11ad330fe879f403de51741673

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp44DE.tmp

Filesize
1KB

MD5
cdf5683344404764a0f3592e9db8a5a1

SHA1
6705943b404de237cdd7080c05af25e2b1b6410c

SHA256
1ea0af7c86be3e61c281ada0470c6dcf178834380def1903b5bb78b49440ffff

SHA512
23c56873ca8520784cc1d6b0b4211b373fff6fb429872932e5274801d3b9d786566877cd16d1ffa0adca8c7aebb0b935701a0c071073edfbdb319002f99a182b

Download Submit
memory/2532-28-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-2-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-5-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-6-0x0000000000430000-0x000000000043A000-memory.dmp

Filesize
40KB

Download
memory/2532-7-0x0000000004E20000-0x0000000004E92000-memory.dmp

Filesize
456KB

Download
memory/2532-3-0x00000000003F0000-0x0000000000406000-memory.dmp

Filesize
88KB

Download
memory/2532-13-0x0000000000CD0000-0x0000000000D0A000-memory.dmp

Filesize
232KB

Download
memory/2532-1-0x00000000012B0000-0x0000000001380000-memory.dmp

Filesize
832KB

Download
memory/2532-4-0x000000007409E000-0x000000007409F000-memory.dmp

Filesize
4KB

Download
memory/2532-0-0x000000007409E000-0x000000007409F000-memory.dmp

Filesize
4KB

Download
memory/2644-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2644-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-36-0x00000000004B0000-0x00000000004BA000-memory.dmp

Filesize
40KB

Download
memory/2644-37-0x00000000006E0000-0x00000000006FE000-memory.dmp

Filesize
120KB

Download
memory/2644-38-0x0000000000700000-0x000000000070A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads