nanocore | 2b4aa9d2057b4b7e67bbc3f30911d4aad35f8af5e10d4c587b4254555bf4a695

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-10-2024 10:11

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General

Target

20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
Size

699KB
MD5

20fc4905deec49b284490fdc03ecb1c5
SHA1

fdedc862bc7ac7324f96ff00aeba75ef6f6b6967
SHA256

2b4aa9d2057b4b7e67bbc3f30911d4aad35f8af5e10d4c587b4254555bf4a695
SHA512

53e52602ab71ac698eb2f39378129af533cf9242f527fd0ef9e60017c42898fd88f521a0edcce5237c2056aebf5cdc96a3e8afb994cf0e43ccd01a3d03b3262f
SSDEEP

12288:lYp+gczyhNSvRbBQHR4qz91hI0zSaNsvz+yuWDVId21NaI+E8tyvXMeJXfXUyh8F:ke3rLDQVteqvxeojT0Ggp8

Score

10^/10

nanocore discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

ucrexz.hopto.org:2021

127.0.0.1:2021

Mutex

3ca05887-ada0-4215-877e-306409ecf9a3

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-05-03T01:32:02.880544436Z
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
2021
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
3ca05887-ada0-4215-877e-306409ecf9a3
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
ucrexz.hopto.org
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

Processes:

RegSvcs.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Service = "C:\\Program Files (x86)\\UDP Service\\udpsv.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2936 set thread context of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	Process
File created	C:\Program Files (x86)\UDP Service\udpsv.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\UDP Service\udpsv.exe	RegSvcs.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

Processes:

RegSvcs.exeschtasks.exeschtasks.exe20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.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	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid	Process
2804	schtasks.exe
2732	schtasks.exe
2612	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exeRegSvcs.exe

pid	Process
2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
2868	RegSvcs.exe
2868	RegSvcs.exe
2868	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid	Process
2868	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exeRegSvcs.exe

description	pid	Process
Token: SeDebugPrivilege	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
Token: SeDebugPrivilege	2868	RegSvcs.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exeRegSvcs.exe

description	pid	Process	procid_target
PID 2936 wrote to memory of 2804	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	31
PID 2936 wrote to memory of 2804	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	31
PID 2936 wrote to memory of 2804	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	31
PID 2936 wrote to memory of 2804	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	31
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2800	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	33
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2936 wrote to memory of 2868	2936	20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe	34
PID 2868 wrote to memory of 2732	2868	RegSvcs.exe	35
PID 2868 wrote to memory of 2732	2868	RegSvcs.exe	35
PID 2868 wrote to memory of 2732	2868	RegSvcs.exe	35
PID 2868 wrote to memory of 2732	2868	RegSvcs.exe	35
PID 2868 wrote to memory of 2612	2868	RegSvcs.exe	37
PID 2868 wrote to memory of 2612	2868	RegSvcs.exe	37
PID 2868 wrote to memory of 2612	2868	RegSvcs.exe	37
PID 2868 wrote to memory of 2612	2868	RegSvcs.exe	37

C:\Users\Admin\AppData\Local\Temp\20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\20fc4905deec49b284490fdc03ecb1c5_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RGogVnNWGy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3EA6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2804
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:2800
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - 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:2868
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp40A8.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2732
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp40F7.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2612

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

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\tmp3EA6.tmp

Filesize
1KB

MD5
ce9d7fbc3bd5b776d8e00a383f608035

SHA1
21c8b1a030d3511e2531cef26fecc9476374a941

SHA256
cb36549204476020156c9d07eadbc96e693d4a9063a65f5ce42ccc64703d18d6

SHA512
7a1511d806b9f67ef54f000ba75f2316c671da834a3e37ddfb39706c349399a40e11ac7f24a5e37036787b26e30aff524a35c94076c71293e601f14463773085

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp40A8.tmp

Filesize
1KB

MD5
8cad1b41587ced0f1e74396794f31d58

SHA1
11054bf74fcf5e8e412768035e4dae43aa7b710f

SHA256
3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

SHA512
99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp40F7.tmp

Filesize
1KB

MD5
0a24db62cb5b84309c4803346caaa25d

SHA1
67660778f61bb44168c33ed3fe56ed86cf9583e8

SHA256
38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

SHA512
d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

Download Submit
memory/2868-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-38-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-37-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-36-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/2868-35-0x00000000003C0000-0x00000000003DE000-memory.dmp

Filesize
120KB

Download
memory/2868-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-34-0x00000000003B0000-0x00000000003BA000-memory.dmp

Filesize
40KB

Download
memory/2868-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-25-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-26-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2868-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2868-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2936-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2936-4-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2936-2-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2936-1-0x0000000001340000-0x00000000013F6000-memory.dmp

Filesize
728KB

Download
memory/2936-24-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download
memory/2936-3-0x0000000000430000-0x0000000000438000-memory.dmp

Filesize
32KB

Download
memory/2936-7-0x00000000011A0000-0x00000000011F2000-memory.dmp

Filesize
328KB

Download
memory/2936-6-0x0000000007C70000-0x0000000007D14000-memory.dmp

Filesize
656KB

Download
memory/2936-5-0x0000000074A70000-0x000000007515E000-memory.dmp

Filesize
6.9MB

Download