nanocore | 311c475670593f1f5ceddc785e8ddacc97fd7fc6c212694e5e91f4f21201c595

General

Target
fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe
Size 1.5MB
Sample240928-ltsfrayhmn
SHA256 311c475670593f1f5ceddc785e8ddacc97fd7fc6c212694e5e91f4f21201c595
MD5 fc092c2aa1748cc4277fcc96a7c84ce5
SHA1 22ded299cb27e322d0bdfb73ec2023e3c93a2427
SHA512 a8b04c497766597a85ac8eb9b32201a68b6c42389c55465ae5a168679d113581899e01f56cb0d78510c46c9f04837fdee51ee6ca326cc5fe8cf23573d11633a9
SSDEEP 24576:kAHnh+eWsN3skA4RV1Hom2KXMmHaXQ+3brH9jQnuJ5UlyPPI5j:zh+ZkldoPK8YaXQ+3bT+j
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

popopooo3847343dfer.publicvm.com:1548
xcvx2343242sdfsdfsdfsxcv.publicvm.com:1548

Mutex

e1b28f57-56be-44e1-8737-2d2fcc20ded8

Attributes

activate_away_mode
true
backup_connection_host
xcvx2343242sdfsdfsdfsxcv.publicvm.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-05-02T16:07:09.701850336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1548
default_group
zzz- TWO -zzz
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
e1b28f57-56be-44e1-8737-2d2fcc20ded8
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
popopooo3847343dfer.publicvm.com
primary_dns_server
8.8.8.8
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

Executes dropped EXE 3 IoCs

pid	Process
3368	gapwltnevepy.exe
3596	gapwltnevepy.exe
3388	gapwltnevepy.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dqwcfgjbmhbm = "C:\\Users\\Admin\\AppData\\Roaming\\heefbjwtwqfv\\gapwltnevepy.exe"	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dqwcfgjbmhbm = "C:\\Users\\Admin\\AppData\\Roaming\\heefbjwtwqfv\\gapwltnevepy.exe"	gapwltnevepy.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dqwcfgjbmhbm = "C:\\Users\\Admin\\AppData\\Roaming\\heefbjwtwqfv\\gapwltnevepy.exe"	gapwltnevepy.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
behavioral2/files/0x0007000000023457-1.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1220 set thread context of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 3596 set thread context of 312	3596	gapwltnevepy.exe	98

System Location Discovery: System Language Discovery 1 TTPs 9 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gapwltnevepy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gapwltnevepy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gapwltnevepy.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3016	schtasks.exe
848	schtasks.exe
2460	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3176	RegAsm.exe
3176	RegAsm.exe
3176	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3176	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3176	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 3016	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	82
PID 1220 wrote to memory of 3016	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	82
PID 1220 wrote to memory of 3016	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	82
PID 1220 wrote to memory of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 1220 wrote to memory of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 1220 wrote to memory of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 1220 wrote to memory of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 1220 wrote to memory of 3176	1220	fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe	94
PID 3596 wrote to memory of 848	3596	gapwltnevepy.exe	96
PID 3596 wrote to memory of 848	3596	gapwltnevepy.exe	96
PID 3596 wrote to memory of 848	3596	gapwltnevepy.exe	96
PID 3596 wrote to memory of 312	3596	gapwltnevepy.exe	98
PID 3596 wrote to memory of 312	3596	gapwltnevepy.exe	98
PID 3596 wrote to memory of 312	3596	gapwltnevepy.exe	98
PID 3596 wrote to memory of 312	3596	gapwltnevepy.exe	98
PID 3596 wrote to memory of 312	3596	gapwltnevepy.exe	98
PID 3388 wrote to memory of 2460	3388	gapwltnevepy.exe	100
PID 3388 wrote to memory of 2460	3388	gapwltnevepy.exe	100
PID 3388 wrote to memory of 2460	3388	gapwltnevepy.exe	100

C:\Users\Admin\AppData\Local\Temp\fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc092c2aa1748cc4277fcc96a7c84ce5_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\SysWOW64\schtasks.exe
  C:\Windows\SysWOW64\schtasks.exe /create /tn ndwvhzxsjv /tr C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe /sc minute /mo 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3016
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:3176

C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3368

C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3596
- C:\Windows\SysWOW64\schtasks.exe
  C:\Windows\SysWOW64\schtasks.exe /create /tn ndwvhzxsjv /tr C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe /sc minute /mo 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:848
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:312

C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Windows\SysWOW64\schtasks.exe
  C:\Windows\SysWOW64\schtasks.exe /create /tn ndwvhzxsjv /tr C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe /sc minute /mo 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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gapwltnevepy.exe

Path C:\Users\Admin\AppData\Roaming\heefbjwtwqfv\gapwltnevepy.exe
Size 1.5MB
SHA256 311c475670593f1f5ceddc785e8ddacc97fd7fc6c212694e5e91f4f21201c595
MD5 fc092c2aa1748cc4277fcc96a7c84ce5
SHA1 22ded299cb27e322d0bdfb73ec2023e3c93a2427
SHA512 a8b04c497766597a85ac8eb9b32201a68b6c42389c55465ae5a168679d113581899e01f56cb0d78510c46c9f04837fdee51ee6ca326cc5fe8cf23573d11633a9
SSDEEP 24576:kAHnh+eWsN3skA4RV1Hom2KXMmHaXQ+3brH9jQnuJ5UlyPPI5j:zh+ZkldoPK8YaXQ+3bT+j
MD5 SHA1 SHA512 SSDEEP

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memory/1220-3-0x0000000004570000-0x0000000004571000-memory.dmp

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memory/3176-5-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3176-9-0x0000000074CF2000-0x0000000074CF3000-memory.dmp

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memory/3176-10-0x0000000074CF0000-0x00000000752A1000-memory.dmp

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memory/3176-11-0x0000000074CF0000-0x00000000752A1000-memory.dmp

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memory/3176-13-0x0000000074CF2000-0x0000000074CF3000-memory.dmp

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memory/3176-14-0x0000000074CF0000-0x00000000752A1000-memory.dmp

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memory/3176-15-0x0000000074CF0000-0x00000000752A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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