nanocore | 04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a

General

Target

04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe
Size

416KB
MD5

9a053bdd101822ef22da12f1599bc851
SHA1

d15f7bce51bafba6b7b029a0820e15d0a7f60813
SHA256

04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a
SHA512

d36fd6aee178185f5490822befbad3f7690daa2d321e789c07ab7c9cd7dc9c9bfcf6b62b9c862b95da1e4ac787de84e94e37acc27c3896f7a9dad3d44426ea4b
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7P:ITNYrnE3bm/CiejewY5vg

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

Executes dropped EXE 1 IoCs

pid	Process
2356	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

pid	Process
2452	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.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 2356 set thread context of 2184	2356	ximo2ubzn1i.exe	31

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	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2184	regasm.exe
2184	regasm.exe
2184	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2184	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2356	2452	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe	30
PID 2452 wrote to memory of 2356	2452	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe	30
PID 2452 wrote to memory of 2356	2452	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe	30
PID 2452 wrote to memory of 2356	2452	04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe	30
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31
PID 2356 wrote to memory of 2184	2356	ximo2ubzn1i.exe	31

C:\Users\Admin\AppData\Local\Temp\04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe
"C:\Users\Admin\AppData\Local\Temp\04fd676dc283bde1035f4efe3fc3ae0daa0419b27155638d835f402fabb0845a.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- 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:2356
- - 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:2184

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

System Information Discovery

2

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

\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
416KB

MD5
3c975c9b766a84e4b4fe199a41283d1c

SHA1
1cf0880e8b9c24112c9e002910bdf02e94f33229

SHA256
1860f9823407b7f4bb9877af46c93032f332a4711212778e315a2b34b90b0efb

SHA512
332effabecf3dfbbfe9a735cc56c67919506683c5a84179c080e5a14205a3155d4b1b28e156164878b6e03c15184fe3a2e5010c75fd52cc3c88627575ef7af32

Download Submit
memory/2184-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2184-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-35-0x00000000004C0000-0x00000000004CA000-memory.dmp

Filesize
40KB

Download
memory/2184-34-0x00000000006D0000-0x00000000006EE000-memory.dmp

Filesize
120KB

Download
memory/2184-33-0x00000000004B0000-0x00000000004BA000-memory.dmp

Filesize
40KB

Download
memory/2184-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2184-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2356-15-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2356-14-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2356-13-0x0000000000340000-0x00000000003AE000-memory.dmp

Filesize
440KB

Download
memory/2356-36-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2356-37-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2452-1-0x0000000000FE0000-0x000000000104E000-memory.dmp

Filesize
440KB

Download
memory/2452-0-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2452-3-0x0000000004C90000-0x0000000004CCC000-memory.dmp

Filesize
240KB

Download
memory/2452-12-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2452-2-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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