nanocore | f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e

General

Target

f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe
Size

416KB
MD5

1d04b3209c2c7b14c3b3b12c1fc36b00
SHA1

8cfa26cab15378ebcfd0e059cacdc541f1a997c3
SHA256

f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e
SHA512

935914dcf24c3725332ed13e237d49449d5e74a37d39b060cd190a2167794cb08981cb365fac54e27d84852450906f6ea7bdbf0938e0b946deddd7f829200435
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU0:ITNYrnE3bm/CiejewY5vb

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes

activate_away_mode
false
backup_connection_host
178.32.224.116
backup_dns_server
buffer_size
65535
build_time
2018-07-28T12:59:38.488799236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
46218
default_group
tourex
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
4af74541-e3f1-469c-8af7-efe4071b81cf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
[email protected]
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 1 IoCs

pid	Process
2600	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

pid	Process
2324	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.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	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 2880	2600	ximo2ubzn1i.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	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2880	regasm.exe
2880	regasm.exe
2880	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2880	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2600	2324	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe	31
PID 2324 wrote to memory of 2600	2324	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe	31
PID 2324 wrote to memory of 2600	2324	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe	31
PID 2324 wrote to memory of 2600	2324	f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe	31
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32
PID 2600 wrote to memory of 2880	2600	ximo2ubzn1i.exe	32

C:\Users\Admin\AppData\Local\Temp\f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe
"C:\Users\Admin\AppData\Local\Temp\f1f506dd66bf3c5da9ea6ca58071e03d8a249b45fa52e57af52e001ac0e8483e.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
  "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2880

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\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
416KB

MD5
effa9cae85d0f5c8794113929302c123

SHA1
c03837020ac2183fc3e800dd6f858df040a748bb

SHA256
879dc6fc192e91b72979a8a7a3cba96a895b756af41f95039905b3717c50b0e0

SHA512
562a2fd5a16cae55588a382ac2d8c3022012aabc92b43e257a62596be78116739916f3e586b9b53a6a95489f5b6873522d7d9f02b18c0ed2b31a87796eee88a8

Download Submit
memory/2324-1-0x0000000000AD0000-0x0000000000B3E000-memory.dmp

Filesize
440KB

Download
memory/2324-2-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2324-3-0x0000000000810000-0x000000000084C000-memory.dmp

Filesize
240KB

Download
memory/2324-13-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2324-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2600-33-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2600-12-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2600-14-0x0000000000150000-0x00000000001BE000-memory.dmp

Filesize
440KB

Download
memory/2600-15-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2600-34-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2880-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2880-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-30-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/2880-31-0x0000000000440000-0x000000000045E000-memory.dmp

Filesize
120KB

Download
memory/2880-32-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/2880-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2880-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads