nanocore | 4a87788a7028f3261ef6a5fef0072290cd3722cfc8bba27fc5cf2df97378e3f6

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 08:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
Size

1.5MB
MD5

615736b3586f6574550ba5975fb7e586
SHA1

5daf2a0ec3a975ce4fc76a9403886cce0eb6a8d3
SHA256

4a87788a7028f3261ef6a5fef0072290cd3722cfc8bba27fc5cf2df97378e3f6
SHA512

0df87beddbd1a42f93f15df198a7778fb85c4437939d311270c61017540a0aa91bc8066d90338c71f948af1de0c15b84e8733e977ff2ed6c939abc60f3731290
SSDEEP

49152:81vqjd/QIgW2b4VTPA3Op4DzIwNHVj+GfWWF:81vqjhgW2bqbhmjN1Vp

Score

10^/10

nanocore defense_evasion discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Executes dropped EXE 1 IoCs

Processes:

skype 3.7.exe

pid	Process
2432	skype 3.7.exe

Loads dropped DLL 2 IoCs

Processes:

615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe

pid	Process
2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

skype 3.7.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Microsoft Corporation LWLHXBWNDOMCHHIf = "C:\\Users\\Admin\\AppData\\Roaming\\LWLHXBWNDOMCHHIf.exe"	skype 3.7.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

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral1/files/0x000c0000000122ea-8.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

skype 3.7.exe

description	pid	Process	procid_target
PID 2432 set thread context of 2772	2432	skype 3.7.exe	32

Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 3 IoCs

When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

defense_evasion

SIP and Trust Provider Hijacking

T1553.003

Processes:

skype 3.7.exe615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\LWLHXBWNDOMCHHIf.exe:Zone.Identifier:$DATA	skype 3.7.exe
File created	C:\Users\Admin\AppData\Roaming\skype 3.7.exe:Zone.Identifier:$DATA	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\skype 3.7.exe:Zone.Identifier:$DATA	skype 3.7.exe

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:

615736b3586f6574550ba5975fb7e586_JaffaCakes118.exeskype 3.7.exeRegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype 3.7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

NTFS ADS 4 IoCs

Processes:

skype 3.7.exe615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\LWLHXBWNDOMCHHIf.exe:Zone.Identifier:$DATA	skype 3.7.exe
File created	C:\Users\Admin\AppData\Roaming\skype 3.7.exe:Zone.Identifier:$DATA	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
File created	C:\Users\Admin\AppData\Roaming\LWLHXBWNDOMCHHIf.exe\:Zone.Identifier:$DATA	skype 3.7.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\skype 3.7.exe:Zone.Identifier:$DATA	skype 3.7.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

skype 3.7.exeRegAsm.exe

pid	Process
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2772	RegAsm.exe
2772	RegAsm.exe
2772	RegAsm.exe
2772	RegAsm.exe
2772	RegAsm.exe
2772	RegAsm.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe
2432	skype 3.7.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

skype 3.7.exeRegAsm.exe

pid	Process
2432	skype 3.7.exe
2772	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	2772	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

615736b3586f6574550ba5975fb7e586_JaffaCakes118.exeskype 3.7.exe

description	pid	Process	procid_target
PID 2592 wrote to memory of 2432	2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe	31
PID 2592 wrote to memory of 2432	2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe	31
PID 2592 wrote to memory of 2432	2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe	31
PID 2592 wrote to memory of 2432	2592	615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe	31
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32
PID 2432 wrote to memory of 2772	2432	skype 3.7.exe	32

C:\Users\Admin\AppData\Local\Temp\615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\615736b3586f6574550ba5975fb7e586_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Subvert Trust Controls: Mark-of-the-Web Bypass
- System Location Discovery: System Language Discovery
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:2592
- C:\Users\Admin\AppData\Roaming\skype 3.7.exe
  "C:\Users\Admin\AppData\Roaming\skype 3.7.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\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:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\LWLHXBWNDOMC

Filesize
767KB

MD5
70c335d2062adc4fa44a2328f9261c1e

SHA1
7b81f2750b3a0b5aacc6a1a52380bee99096e9b6

SHA256
4f079e124365e79ac0ba03cdf518271193d0299ad24876d44bcebf42e28eeda6

SHA512
023e9445375fecef11fa9c958ce32151f088dc1e67395cca67d55627742da2545fa8d1cc85e4d1f16309134bf678c04a82abed41154945c868300886325448a9

Download Submit
\Users\Admin\AppData\Roaming\skype 3.7.exe

Filesize
1.5MB

MD5
615736b3586f6574550ba5975fb7e586

SHA1
5daf2a0ec3a975ce4fc76a9403886cce0eb6a8d3

SHA256
4a87788a7028f3261ef6a5fef0072290cd3722cfc8bba27fc5cf2df97378e3f6

SHA512
0df87beddbd1a42f93f15df198a7778fb85c4437939d311270c61017540a0aa91bc8066d90338c71f948af1de0c15b84e8733e977ff2ed6c939abc60f3731290

Download Submit
memory/2772-25-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-27-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-29-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-42-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-39-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-38-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-32-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2772-43-0x0000000073D02000-0x0000000073D04000-memory.dmp

Filesize
8KB

Download
memory/2772-45-0x0000000073D00000-0x00000000742AB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-46-0x0000000073D02000-0x0000000073D04000-memory.dmp

Filesize
8KB

Download
memory/2772-47-0x0000000073D00000-0x00000000742AB000-memory.dmp

Filesize
5.7MB

Download