nanocore | b8a20c7281f3e0db60291a81218833c0626f1ebdb7c855d905c76116728d0122

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 12:44

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General

Target

d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
Size

879KB
MD5

d282825b8b00810fd3afa4798e314766
SHA1

d8c174803c539d05a74b46a0da663735c12b1d06
SHA256

b8a20c7281f3e0db60291a81218833c0626f1ebdb7c855d905c76116728d0122
SHA512

1a7a17e019e369cefa9f6f6d13589065409b96550a23ef450520621d3138b18f869ae3f2aab8d1f8b5eccc2ee26b6e6ac599e3b9ca5ac06e0f1673db2952d14e
SSDEEP

12288:uaWzgMg7v3qnCiMErQohh0F4CCJ8lny/QM7urd7dkVgH4yGwS2+GN7DGOA:ZaHMv6Corjqny/QM7C2ylP+Y7DGN

Score

10^/10

nanocore defense_evasion discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

178.172.236.15:1337

Mutex

174eea91-c6a6-480d-ba58-84ac033bdb25

Attributes

activate_away_mode
true
backup_connection_host
178.172.236.15
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2016-01-27T11:19:35.243537036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1337
default_group
Default
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
174eea91-c6a6-480d-ba58-84ac033bdb25
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
178.172.236.15
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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
2700	system.exe

Loads dropped DLL 2 IoCs

pid	Process
2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Microsoft Corporation JZCESgWePSWWUHda = "C:\\Users\\Admin\\AppData\\Roaming\\JZCESgWePSWWUHda.exe"	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Manager = "C:\\Program Files (x86)\\DHCP Manager\\dhcpmgr.exe"	RegAsm.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

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000015d87-8.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 2744	2700	system.exe	31

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	RegAsm.exe

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

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\system.exe:Zone.Identifier:$DATA	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\system.exe:Zone.Identifier:$DATA	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\JZCESgWePSWWUHda.exe:Zone.Identifier:$DATA	system.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 5 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe

NTFS ADS 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\system.exe:Zone.Identifier:$DATA	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
File created	C:\Users\Admin\AppData\Roaming\JZCESgWePSWWUHda.exe\:Zone.Identifier:$DATA	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\system.exe:Zone.Identifier:$DATA	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\JZCESgWePSWWUHda.exe:Zone.Identifier:$DATA	system.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1256	schtasks.exe
596	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2744	RegAsm.exe
2744	RegAsm.exe
2744	RegAsm.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe
2700	system.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2700	system.exe
2744	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2700	2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe	30
PID 2704 wrote to memory of 2700	2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe	30
PID 2704 wrote to memory of 2700	2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe	30
PID 2704 wrote to memory of 2700	2704	d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe	30
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2700 wrote to memory of 2744	2700	system.exe	31
PID 2744 wrote to memory of 1256	2744	RegAsm.exe	32
PID 2744 wrote to memory of 1256	2744	RegAsm.exe	32
PID 2744 wrote to memory of 1256	2744	RegAsm.exe	32
PID 2744 wrote to memory of 1256	2744	RegAsm.exe	32
PID 2744 wrote to memory of 596	2744	RegAsm.exe	34
PID 2744 wrote to memory of 596	2744	RegAsm.exe	34
PID 2744 wrote to memory of 596	2744	RegAsm.exe	34
PID 2744 wrote to memory of 596	2744	RegAsm.exe	34

C:\Users\Admin\AppData\Local\Temp\d282825b8b00810fd3afa4798e314766_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d282825b8b00810fd3afa4798e314766_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:2704
- C:\Users\Admin\AppData\Roaming\system.exe
  C:\Users\Admin\AppData\Roaming\system.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:2700
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DHCP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4818.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1256
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DHCP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp48D4.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

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Downloads

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

Filesize
203KB

MD5
6d7861fbd1bb788fe08ce86341239bc5

SHA1
f8074245215dc492f8d83a689506d62d0722293e

SHA256
c223e9b9e2e1b086fcdefafb6ae9fa8ff30bdf9e295d72c26327700d423a3e85

SHA512
c8300bb0e419a2f16b4623f3f48809ea89bf471907c9ea62c6cae1f86f404012cfa0c65e3d9b46b40ab68496f1855caa8c92566765dbbf60cc234fdbcf455a6a

Download Submit
C:\Users\Admin\AppData\Local\Temp\JZCESgWePSWW

Filesize
203KB

MD5
023b2cc81a56d12cd009cf877170e024

SHA1
a865ff4102b3e973d71b1deafb103f22b2b98bfc

SHA256
af9f0b6225ef28d7b5c4791c2a697bccb9b60cd827ce9779c1310cd66600324e

SHA512
58e359f7539668cc4d4df805c9163dfd1c3a2e22cadaa0c9c3de258d47eeb9a5433869de4f94ce6ac5173ea7567e8414912b048d6c8e621ad17c1a4cff041b15

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4818.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp48D4.tmp

Filesize
1KB

MD5
cdf5683344404764a0f3592e9db8a5a1

SHA1
6705943b404de237cdd7080c05af25e2b1b6410c

SHA256
1ea0af7c86be3e61c281ada0470c6dcf178834380def1903b5bb78b49440ffff

SHA512
23c56873ca8520784cc1d6b0b4211b373fff6fb429872932e5274801d3b9d786566877cd16d1ffa0adca8c7aebb0b935701a0c071073edfbdb319002f99a182b

Download Submit
\Users\Admin\AppData\Roaming\system.exe

Filesize
879KB

MD5
d282825b8b00810fd3afa4798e314766

SHA1
d8c174803c539d05a74b46a0da663735c12b1d06

SHA256
b8a20c7281f3e0db60291a81218833c0626f1ebdb7c855d905c76116728d0122

SHA512
1a7a17e019e369cefa9f6f6d13589065409b96550a23ef450520621d3138b18f869ae3f2aab8d1f8b5eccc2ee26b6e6ac599e3b9ca5ac06e0f1673db2952d14e

Download Submit
memory/2744-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-36-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-34-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-43-0x00000000741F2000-0x00000000741F4000-memory.dmp

Filesize
8KB

Download
memory/2744-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2744-51-0x00000000741F2000-0x00000000741F4000-memory.dmp

Filesize
8KB

Download