nanocore | ff0f61d37eb38011e35040d672a9aa628bd689455f722292b3a28bfe862d993c

General

Target
de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe
Size 803KB
Sample240913-v7465syhpp
SHA256 ff0f61d37eb38011e35040d672a9aa628bd689455f722292b3a28bfe862d993c
MD5 de9534615f4c1b39dc188166b57a2e67
SHA1 1d607905629c1893b0bb472550f0df9a7eab9b26
SHA512 9d2f2f102a4acece62a51acb45e3359f8f6986532adc8d782d942f0afbd00d0bbc06f3e703bea029afc17bdc2d2cec8f6e69eff13875973b0572d0174dc14d14
SSDEEP 12288:aUQ1dt2VBcwyDpQrncUBwyPpjSSq+M6Ongu7iUx3CQSwAblUOTw20pWUK:ah2TR6yISqfgXUjK+J2JUK
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

simi123.ddns.net:1050

Mutex

17e0715e-c70c-4fd2-b2ed-92fa0487cd81

Attributes

activate_away_mode
true
backup_connection_host
simi123.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2017-06-13T16:20:49.890481436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1050
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
17e0715e-c70c-4fd2-b2ed-92fa0487cd81
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
simi123.ddns.net
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

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2308 set thread context of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\NAS Monitor\nasmon.exe	regasm.exe
File opened for modification	C:\Program Files (x86)\NAS Monitor\nasmon.exe	regasm.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe
2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe
2956	regasm.exe
2956	regasm.exe
2956	regasm.exe
2956	regasm.exe
2956	regasm.exe
2956	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2956	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	regasm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86
PID 2308 wrote to memory of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86
PID 2308 wrote to memory of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86
PID 2308 wrote to memory of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86
PID 2308 wrote to memory of 2956	2308	de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de9534615f4c1b39dc188166b57a2e67_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"
  2⤵
  - 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
  PID:2956