nanocore | a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5

General

Target

a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe
Size

417KB
MD5

f74d97ec1df360e4db4a466000da8cc0
SHA1

1b047e5a042a1c762c27e5644d422422be811b5c
SHA256

a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5
SHA512

29d61af2094b5accd2444cf6096240028006a29bf9a961cb7b915e19ff7172c02beb67659fa42b95f61becf731fab8aa530f742982c2735bc791926c4f07dd6e
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU70:ITNYrnE3bm/CiejewY5vz

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe

Executes dropped EXE 1 IoCs

pid	Process
2228	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.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 2228 set thread context of 2268	2228	ximo2ubzn1i.exe	83

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	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.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
2268	regasm.exe
2268	regasm.exe
2268	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2268	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 2228	3996	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe	82
PID 3996 wrote to memory of 2228	3996	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe	82
PID 3996 wrote to memory of 2228	3996	a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe	82
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83
PID 2228 wrote to memory of 2268	2228	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe
"C:\Users\Admin\AppData\Local\Temp\a082720ec8501c62b40ffa87090f8c4a4f6e5c90d47f99c964411fa5e288d9f5N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3996
- 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:2228
- - 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:2268

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
417KB

MD5
58aac8fd77bed455face46a80b8e3b97

SHA1
d8a23762914e0ce3b7c36e30b788ec67d664cc04

SHA256
71161ce78c4857c225d82367b0ded925249628f3b333f99abfafcdc32c6f50c5

SHA512
4528eb8b5b5ec2d546a680a3b79ff68c90ad8fdd55cefc343348af468c3c27432fa5f5bc100a75848e07c966fa599db05b14eac5c9e4fa1a120f831c8ffb9221

Download Submit
memory/2228-35-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2228-33-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2228-22-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2228-21-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2268-28-0x0000000005940000-0x00000000059DC000-memory.dmp

Filesize
624KB

Download
memory/2268-32-0x0000000006790000-0x000000000679A000-memory.dmp

Filesize
40KB

Download
memory/2268-36-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2268-31-0x0000000005A60000-0x0000000005A7E000-memory.dmp

Filesize
120KB

Download
memory/2268-30-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/2268-27-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/2268-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2268-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2268-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3996-3-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/3996-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/3996-20-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3996-4-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3996-6-0x0000000005C20000-0x0000000005C5C000-memory.dmp

Filesize
240KB

Download
memory/3996-2-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/3996-1-0x0000000000660000-0x00000000006CE000-memory.dmp

Filesize
440KB

Download
memory/3996-5-0x0000000005260000-0x000000000526A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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