nanocore | b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21c

General

Target

b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe
Size

416KB
MD5

d7c71a53a1e7e06f08d33b918b4af9d0
SHA1

0f722acb73a8c7e4c4baac4bb43c796fd45fdfaa
SHA256

b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21c
SHA512

ffde0213caaa4c05ff90a4ded40fc53e8932f03950f4a69fb3038eada239494d0b8f101019ecf723f11ac3ae022133fcc90887803dcd306d9884f53b756b3677
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7g:ITNYrnE3bm/CiejewY5v7

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe

Executes dropped EXE 1 IoCs

pid	Process
1560	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.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 1560 set thread context of 3812	1560	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	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.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
3812	regasm.exe
3812	regasm.exe
3812	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3812	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3812	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 1560	1040	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe	84
PID 1040 wrote to memory of 1560	1040	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe	84
PID 1040 wrote to memory of 1560	1040	b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe	84
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85
PID 1560 wrote to memory of 3812	1560	ximo2ubzn1i.exe	85

C:\Users\Admin\AppData\Local\Temp\b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe
"C:\Users\Admin\AppData\Local\Temp\b44255fee58ea9ba6a1c4b0f4fa464c148659a63d4fc1376a944ea3e8836f21cN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1040
- 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:1560
- - 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:3812

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
139e9d399014f943032018eb24063460

SHA1
61bd495661017a693d8ae430324b07d0b4acbbed

SHA256
749ac76fc33406cbcc021215bd019a7846f345e9b01f3e9a36cd71bb85d87688

SHA512
052d9dd5dd73ee0979bcdfcb9f921634e3a06f8f86d76ade85deee637fa68beebf7eab81f8c30b5797597bf9c7bf68f39dc82e9756486925b93d20f0bc6be211

Download Submit
memory/1040-21-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/1040-1-0x0000000000AA0000-0x0000000000B0E000-memory.dmp

Filesize
440KB

Download
memory/1040-2-0x0000000005BB0000-0x0000000006154000-memory.dmp

Filesize
5.6MB

Download
memory/1040-3-0x00000000054E0000-0x0000000005572000-memory.dmp

Filesize
584KB

Download
memory/1040-4-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/1040-5-0x00000000055A0000-0x00000000055AA000-memory.dmp

Filesize
40KB

Download
memory/1040-6-0x00000000057D0000-0x000000000580C000-memory.dmp

Filesize
240KB

Download
memory/1040-0-0x000000007526E000-0x000000007526F000-memory.dmp

Filesize
4KB

Download
memory/1560-22-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/1560-20-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/1560-33-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/1560-35-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3812-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3812-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3812-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3812-27-0x0000000075260000-0x0000000075A10000-memory.dmp

Filesize
7.7MB

Download
memory/3812-28-0x0000000005670000-0x000000000570C000-memory.dmp

Filesize
624KB

Download
memory/3812-30-0x0000000005610000-0x000000000561A000-memory.dmp

Filesize
40KB

Download
memory/3812-31-0x0000000005A10000-0x0000000005A2E000-memory.dmp

Filesize
120KB

Download
memory/3812-32-0x0000000005A30000-0x0000000005A3A000-memory.dmp

Filesize
40KB

Download
memory/3812-36-0x0000000075260000-0x0000000075A10000-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