nanocore | eb5c9251d0d7344b450918c22fbddbd1d772c4a8aadd32d176e38989b458ffef

General

Target

bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe
Size

410KB
MD5

bf60b9ff96fbb56d1e6cdee3e2933ed0
SHA1

5171fd5251978633ee6f89d402fd288db3388833
SHA256

eb5c9251d0d7344b450918c22fbddbd1d772c4a8aadd32d176e38989b458ffef
SHA512

e8255e0dd163760e76296d8751ed412e727b48b92eeb2834d3e9f57810ac65e862e4322bc322aa9a33ec3452c2ccdab8a67677e2b02df039329ce7a60940ec8b
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+u:ITNYrnE3bm/CiejewY5vG

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

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe

Executes dropped EXE 1 IoCs

pid	Process
4928	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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	bf60b9ff96fbb56d1e6cdee3e2933ed0N.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 4928 set thread context of 5088	4928	ximo2ubzn1i.exe	93

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	bf60b9ff96fbb56d1e6cdee3e2933ed0N.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
5088	regasm.exe
5088	regasm.exe
5088	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5088	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5088	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 4928	2700	bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe	91
PID 2700 wrote to memory of 4928	2700	bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe	91
PID 2700 wrote to memory of 4928	2700	bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe	91
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93
PID 4928 wrote to memory of 5088	4928	ximo2ubzn1i.exe	93

C:\Users\Admin\AppData\Local\Temp\bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe
"C:\Users\Admin\AppData\Local\Temp\bf60b9ff96fbb56d1e6cdee3e2933ed0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- 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:4928
- - 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:5088

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
410KB

MD5
2315278db9a9b9be0f011af3c6b392bd

SHA1
74893ed87f33b2d83742cfb10777c9831a7d6b71

SHA256
105ab65962f667588615ac9f331e15bd9e5d2529d637b28cf0ff1c440a9dfa36

SHA512
c36eca10ffbcf91f3c8bbc9d84d01a61c112ce4b3a77be5952d3a88fcdf4a919931be7d3dee4eae203aaee4a9be442010bdcb571a36cccf577db52675080253c

Download Submit
memory/2700-21-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/2700-1-0x00000000001C0000-0x000000000022E000-memory.dmp

Filesize
440KB

Download
memory/2700-2-0x0000000005270000-0x0000000005814000-memory.dmp

Filesize
5.6MB

Download
memory/2700-3-0x0000000004CC0000-0x0000000004D52000-memory.dmp

Filesize
584KB

Download
memory/2700-4-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/2700-5-0x0000000004C30000-0x0000000004C3A000-memory.dmp

Filesize
40KB

Download
memory/2700-6-0x00000000051D0000-0x000000000520C000-memory.dmp

Filesize
240KB

Download
memory/2700-0-0x0000000074E7E000-0x0000000074E7F000-memory.dmp

Filesize
4KB

Download
memory/4928-22-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/4928-20-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/4928-33-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/4928-35-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/5088-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5088-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5088-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5088-27-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/5088-28-0x00000000050D0000-0x000000000516C000-memory.dmp

Filesize
624KB

Download
memory/5088-30-0x00000000050C0000-0x00000000050CA000-memory.dmp

Filesize
40KB

Download
memory/5088-31-0x0000000005290000-0x00000000052AE000-memory.dmp

Filesize
120KB

Download
memory/5088-32-0x0000000005F60000-0x0000000005F6A000-memory.dmp

Filesize
40KB

Download
memory/5088-36-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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