nanocore | 4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c

General

Target

4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe
Size

416KB
MD5

e3a5408dc1c01b1f5dd2e6a94535a605
SHA1

3a17e4ad3fe8846f7c5153f721ecbc7f2154675f
SHA256

4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c
SHA512

75461f44bca54076ccb3552748a716cac04460fda423f96ed9f017b746c6bd80f6a351f584b3beacabaa83c4a3fb957db02bf3b39eeeccd528b440a68928a41e
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7z:ITNYrnE3bm/CiejewY5v0

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

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe

Executes dropped EXE 1 IoCs

pid	Process
4936	ximo2ubzn1i.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.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 4936 set thread context of 2124	4936	ximo2ubzn1i.exe	85

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	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.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
2124	regasm.exe
2124	regasm.exe
2124	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2124	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 4936	4324	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe	84
PID 4324 wrote to memory of 4936	4324	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe	84
PID 4324 wrote to memory of 4936	4324	4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe	84
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85
PID 4936 wrote to memory of 2124	4936	ximo2ubzn1i.exe	85

C:\Users\Admin\AppData\Local\Temp\4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe
"C:\Users\Admin\AppData\Local\Temp\4fef2fa2c8089926d253da5b8dd0f4c53367c140246ed90977651c2bc8c4338c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4324
- 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:4936
- - 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:2124

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

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\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
416KB

MD5
0e3b6cdc12b34502fd75dff7c7636adc

SHA1
965b72e8d621326f33907ec15e274e61cd9250cd

SHA256
eacad5474d4d023185d5d9a07e5229e4961e20c970f7b2c6e22fcc966f8a6feb

SHA512
0a2bc3b0ad74f3793294fe73ea9a74cbe8e10585292a9f48ffe7e326d6c06da65336af1e9ec57a741233aedd4a8694c433ef16b895a42e6dfb30388d821f3540

Download Submit
memory/2124-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2124-36-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/2124-32-0x00000000058B0000-0x00000000058BA000-memory.dmp

Filesize
40KB

Download
memory/2124-31-0x0000000005550000-0x000000000556E000-memory.dmp

Filesize
120KB

Download
memory/2124-30-0x0000000005540000-0x000000000554A000-memory.dmp

Filesize
40KB

Download
memory/2124-28-0x0000000005570000-0x000000000560C000-memory.dmp

Filesize
624KB

Download
memory/2124-27-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/2124-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2124-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4324-5-0x0000000005040000-0x000000000504A000-memory.dmp

Filesize
40KB

Download
memory/4324-21-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4324-6-0x0000000005BC0000-0x0000000005BFC000-memory.dmp

Filesize
240KB

Download
memory/4324-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/4324-4-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4324-3-0x0000000005060000-0x00000000050F2000-memory.dmp

Filesize
584KB

Download
memory/4324-2-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download
memory/4324-1-0x0000000000720000-0x000000000078E000-memory.dmp

Filesize
440KB

Download
memory/4936-22-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4936-20-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4936-33-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4936-35-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads