nanocore | 1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0

General

Target

1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe
Size

414KB
MD5

a73e63d61a0692d1c456ea7a0d01bb04
SHA1

bd19ce3ddf1ca7f1114d8c9298b65f8ec841db3d
SHA256

1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0
SHA512

d999336cf37fa8bee520d1239990907381882b02a1966053ba0f8802424e3fdc13530e5e57ab401e654099bc67d8027eeb43b3542d2737cff6884a02847e4b7e
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUJ:ITNYrnE3bm/CiejewY5vu

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:

1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
3612	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.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 3612 set thread context of 2800	3612	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:

regasm.exe1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exeximo2ubzn1i.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regasm.exe

pid	Process
2800	regasm.exe
2800	regasm.exe
2800	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
2800	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	2800	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 1268 wrote to memory of 3612	1268	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe	86
PID 1268 wrote to memory of 3612	1268	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe	86
PID 1268 wrote to memory of 3612	1268	1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe	86
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87
PID 3612 wrote to memory of 2800	3612	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe
"C:\Users\Admin\AppData\Local\Temp\1fc97277d13c5908dc142c86ed60b9e5cd6ce357bff8de14f5514fd8d6743ab0.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1268
- 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:3612
- - 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:2800

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
414KB

MD5
4b752f52acc9570ccffc37206216d943

SHA1
2926362f7f1509c84bcb1dcfafaed79fd437e1d3

SHA256
ae2563211c6fb71498d38a8c7edbb7e1820f75ed031204d5bcfaaef5f3b38004

SHA512
a20a92e0332916f10625c3d12d60245a67b0f298146b737ca348d8370137bef259c30c468f98a43f489751bfbc1352306da37d17cd713d4059a3948aa91d7303

Download Submit
memory/1268-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/1268-1-0x0000000000EA0000-0x0000000000F0E000-memory.dmp

Filesize
440KB

Download
memory/1268-2-0x0000000005FE0000-0x0000000006584000-memory.dmp

Filesize
5.6MB

Download
memory/1268-3-0x0000000005960000-0x00000000059F2000-memory.dmp

Filesize
584KB

Download
memory/1268-4-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/1268-5-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/1268-6-0x0000000005F00000-0x0000000005F3C000-memory.dmp

Filesize
240KB

Download
memory/1268-32-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2800-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2800-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2800-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2800-26-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/2800-27-0x0000000004FD0000-0x000000000506C000-memory.dmp

Filesize
624KB

Download
memory/2800-29-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/2800-31-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/2800-30-0x0000000005230000-0x000000000524E000-memory.dmp

Filesize
120KB

Download
memory/2800-36-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/3612-21-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/3612-20-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/3612-33-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/3612-35-0x00000000749C0000-0x0000000075170000-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