nanocore | bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81d

General

Target

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe
Size

415KB
MD5

c89b254e9e6735a9c124b1fc4823cd20
SHA1

bad2bc6d19bcc6e50632e7fa9dcbf16eabb4ac14
SHA256

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81d
SHA512

b62ad2001c4c33146609e032444952b0da19293cd2123c7ffaadb08a23ddba904830eca617a330c8d8836fb6b8453435db384f4f8b5577b01d071d5bd86a7b29
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7/:ITNYrnE3bm/CiejewY5v8

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

Processes:

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
1476	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

regasm.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ximo2ubzn1i.exe

description	pid	Process	procid_target
PID 1476 set thread context of 184	1476	ximo2ubzn1i.exe	87

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

Processes:

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exeximo2ubzn1i.exeregasm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.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

Processes:

regasm.exe

pid	Process
184	regasm.exe
184	regasm.exe
184	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
184	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	184	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 5028 wrote to memory of 1476	5028	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe	86
PID 5028 wrote to memory of 1476	5028	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe	86
PID 5028 wrote to memory of 1476	5028	bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe	86
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87
PID 1476 wrote to memory of 184	1476	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe
"C:\Users\Admin\AppData\Local\Temp\bf063db4b03643cc76e2276d9bbe818eee9e47329ca1056bc60d5a58304cd81dN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5028
- 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:1476
- - 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:184

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
415KB

MD5
2ccde47ba79ace37ae4b754866cd1b90

SHA1
fca65dbabe7b2f85b194ad6995f6cad6d31e4424

SHA256
da8f7e2749715f8a455db0eaa2883df5733a6c5ed77a39627465d73a28a54c67

SHA512
b7140690788599afb0f31567c82793a7ab07e89c584f58d35edb91c36cb891829e7d056db9934aebc33959bacba6b16081273be2f9693964439932cd4d2334f9

Download Submit
memory/184-29-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

Download
memory/184-27-0x00000000054B0000-0x000000000554C000-memory.dmp

Filesize
624KB

Download
memory/184-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/184-26-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/184-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/184-36-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/184-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/184-31-0x00000000059B0000-0x00000000059BA000-memory.dmp

Filesize
40KB

Download
memory/184-30-0x00000000055F0000-0x000000000560E000-memory.dmp

Filesize
120KB

Download
memory/1476-35-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1476-20-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1476-21-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1476-33-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/5028-1-0x00000000009E0000-0x0000000000A4E000-memory.dmp

Filesize
440KB

Download
memory/5028-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

Filesize
4KB

Download
memory/5028-4-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/5028-5-0x0000000005450000-0x000000000545A000-memory.dmp

Filesize
40KB

Download
memory/5028-32-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/5028-3-0x0000000005470000-0x0000000005502000-memory.dmp

Filesize
584KB

Download
memory/5028-2-0x0000000005980000-0x0000000005F24000-memory.dmp

Filesize
5.6MB

Download
memory/5028-6-0x0000000005800000-0x000000000583C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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