nanocore | e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44

General

Target

e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe
Size

415KB
MD5

e3358477bdadd6f6f0023c0d4684acb0
SHA1

f13e182d0b97e4c4033104b0010b1c85bc199d37
SHA256

e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44
SHA512

c88dca97c3de2d47d3e2157cacca3ba1498f8e24e43cf5586ab2bdd2a57c67b3fea4820c1ecb0f2fb93611bf79fe6a51406f837e0184eb4b3f222dd645d0c120
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUwO:ITNYrnE3bm/CiejewY5va

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	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe

Executes dropped EXE 1 IoCs

pid	Process
4988	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"	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.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 4988 set thread context of 4044	4988	ximo2ubzn1i.exe	90

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	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.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
4044	regasm.exe
4044	regasm.exe
4044	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4044	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4044	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 4988	892	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe	88
PID 892 wrote to memory of 4988	892	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe	88
PID 892 wrote to memory of 4988	892	e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe	88
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90
PID 4988 wrote to memory of 4044	4988	ximo2ubzn1i.exe	90

C:\Users\Admin\AppData\Local\Temp\e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe
"C:\Users\Admin\AppData\Local\Temp\e91e9f76c65b0b41a6b40c84d4983418521bc68f614bd6efcbbf2274a2109e44N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:892
- 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:4988
- - 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:4044

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
650eb80c66578508d90d480240d34359

SHA1
93f5d215235f3537e2afceb2a422d01c4b969268

SHA256
717bb314617cfa475a58bd65ea31568571896d09863ce40bb1f1090031be371a

SHA512
9b9f8846d2cbc1efc273c5ec841865177261bdcd3c719068161bca66d7d9d30f82ac58ffe8fd24d3904d0a70f2db565a65c1831c1410488385ce9b876648bf5b

Download Submit
memory/892-21-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/892-1-0x00000000001E0000-0x000000000024E000-memory.dmp

Filesize
440KB

Download
memory/892-2-0x00000000050D0000-0x0000000005674000-memory.dmp

Filesize
5.6MB

Download
memory/892-3-0x0000000004B20000-0x0000000004BB2000-memory.dmp

Filesize
584KB

Download
memory/892-4-0x0000000004B00000-0x0000000004B0A000-memory.dmp

Filesize
40KB

Download
memory/892-5-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/892-6-0x0000000004D90000-0x0000000004DCC000-memory.dmp

Filesize
240KB

Download
memory/892-0-0x0000000074D0E000-0x0000000074D0F000-memory.dmp

Filesize
4KB

Download
memory/4044-28-0x00000000053E0000-0x000000000547C000-memory.dmp

Filesize
624KB

Download
memory/4044-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4044-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4044-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4044-27-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/4044-30-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/4044-31-0x0000000005830000-0x000000000584E000-memory.dmp

Filesize
120KB

Download
memory/4044-32-0x00000000062C0000-0x00000000062CA000-memory.dmp

Filesize
40KB

Download
memory/4044-36-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/4988-22-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/4988-20-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/4988-33-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/4988-35-0x0000000074D00000-0x00000000754B0000-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