nanocore | fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975

General

Target

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe
Size

415KB
MD5

1e563fd6369ec3d22c39310e57771319
SHA1

3a987f037121ef6c846c28148fe9fd21a6ce5fca
SHA256

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975
SHA512

5f1cd15266de0180a62751186e5022d4218f243fdec211a40ca538199affa494d410df0a275ed69c119874dc4b9ab19701c61c1d4f472e113fc9617abc08eec2
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7J:ITNYrnE3bm/CiejewY5ve

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:

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
2292	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.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 2292 set thread context of 488	2292	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:

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exeximo2ubzn1i.exeregasm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.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
488	regasm.exe
488	regasm.exe
488	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
488	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	488	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 572 wrote to memory of 2292	572	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe	86
PID 572 wrote to memory of 2292	572	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe	86
PID 572 wrote to memory of 2292	572	fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe	86
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87
PID 2292 wrote to memory of 488	2292	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe
"C:\Users\Admin\AppData\Local\Temp\fcf725b6738e140899844263c7d98405358f3e8dd4f0ddccef649ae81dc0b975.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:572
- 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:2292
- - 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:488

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
65fd1049381a89f707f1f4d6afc55bc4

SHA1
f2ccb93d33a29d04ab2f77271afa2b35ef5e3912

SHA256
9fa06db44295f6c0c6f73333b5d39e2a37b743e30c0eaf2d845ba57ac71421ee

SHA512
f3a02df583330059951f5636aed7debeb8472ba9e6210b26292af1f93da752ae34812fa8f6cf245eb0a1b05c5bee4a61e6a2a6bcce012bd49ad562bdaf2507cb

Download Submit
memory/488-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/488-36-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/488-32-0x0000000005140000-0x000000000514A000-memory.dmp

Filesize
40KB

Download
memory/488-31-0x0000000005BC0000-0x0000000005BDE000-memory.dmp

Filesize
120KB

Download
memory/488-30-0x0000000004F30000-0x0000000004F3A000-memory.dmp

Filesize
40KB

Download
memory/488-28-0x0000000004F50000-0x0000000004FEC000-memory.dmp

Filesize
624KB

Download
memory/488-27-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/488-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/488-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/572-5-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/572-20-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/572-6-0x0000000005B30000-0x0000000005B6C000-memory.dmp

Filesize
240KB

Download
memory/572-0-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/572-4-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/572-3-0x0000000005860000-0x00000000058F2000-memory.dmp

Filesize
584KB

Download
memory/572-2-0x0000000005EE0000-0x0000000006484000-memory.dmp

Filesize
5.6MB

Download
memory/572-1-0x0000000000E10000-0x0000000000E7E000-memory.dmp

Filesize
440KB

Download
memory/2292-22-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/2292-21-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/2292-33-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download
memory/2292-35-0x0000000074F10000-0x00000000756C0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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