nanocore | 5aa96db9610bf092123d6109c3b45576d2ac29f188c2fbce2c1182bc10aeb8f7

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 00:54

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe
Size 521KB
Sample240601-a9lscsce77
SHA256 5aa96db9610bf092123d6109c3b45576d2ac29f188c2fbce2c1182bc10aeb8f7
MD5 88e8376d99faf50c91286483a9f1b2e7
SHA1 f8d2458a28a1f140a67c3356364afe0e11ea4ec7
SHA512 56299a358bb1463cc5b76bcd9754c551802254a3a0a71c858437cc2f77256f5f539df3a790f14d5902b12452c9f6a8d4c0817a1d5d7934be2e5285e48c1e1bc8
SSDEEP 12288:lUomEFRu3xEPE2oR9hGVwB7kHfs3jRC6a+1shKcDB:jmOMSPE2oR9EVEEfs3g2pAB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

193.37.214.68:5554
127.0.0.1:5554

Mutex

4ef9cbf2-f0d5-470f-8590-beb08580a43c

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-09-01T05:35:18.086296436Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5554
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
4ef9cbf2-f0d5-470f-8590-beb08580a43c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
193.37.214.68
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4232	Puyhrd.exe
3984	Puyhrd.exe

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\WPA Monitor = "C:\\Program Files (x86)\\WPA Monitor\\wpamon.exe"	Puyhrd.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	Puyhrd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4232 set thread context of 3984	4232	Puyhrd.exe	95

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WPA Monitor\wpamon.exe	Puyhrd.exe
File opened for modification	C:\Program Files (x86)\WPA Monitor\wpamon.exe	Puyhrd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3984	Puyhrd.exe
3984	Puyhrd.exe
3984	Puyhrd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3984	Puyhrd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4232	Puyhrd.exe
Token: SeDebugPrivilege	3984	Puyhrd.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	84
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	84
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	84
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	95

C:\Users\Admin\AppData\Local\Temp\88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4232
- - C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe
    "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3984

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

Flmigrmkwhrrxoeoa.png

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\Flmigrmkwhrrxoeoa.png
Size 25KB
SHA256 32408cc3ec9d6e7e1e35e24d50250873c8bbb935dbca6fbcc5ab6abc27ce34fe
MD5 a336ccdac2e13bc7a70ac5e78dc307a2
SHA1 8ef0c014c2a66df8a63c5892ace855e319e92d46
SHA512 29c30bedeb8e59a461da301393432b3969f84786d8779ee602999a6e4befa7a4c4616369eba6bd85f043f112ac7ce2b9601b89b54a8baf9c61eac67e3ae23a40
SSDEEP 768:QDisi1IYk/T7mtHtgCKLkTkO+5mRdGIzZS6:SL/T7mtiNkwbERdjM6
MD5 SHA1 SHA512 SSDEEP

Submit Download

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\M2
Size 38B
SHA256 fdd6087d9e0d11c44c4a90e52a19ac2de60e99bf2d6cfc5df2e745dddf38c2e2
MD5 51f7a79c17515b34128bbc32a8d9d3ba
SHA1 782de841a02a53385851012252c3b4818c6788af
SHA512 20b5eca2cc4b63a0679552e3668913f454d3a2d19ec03808a19680010ed785cfc74080f38f7ff73db58aa9d874d53af8eadcdcdc1e30682e37a9195f31c24e46
MD5 SHA1 SHA512

Submit Download

Puyhrd.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe
Size 115KB
SHA256 e5ab5f6432457ca797e43ce2e1edc280520ef3fe45e2ae477fbe2a5c418bd018
MD5 a850751537b88c9144e226f7cbb7de14
SHA1 b1999b22d42d5486fd0db1b5d3243fd328239cd4
SHA512 d029da5f527109d19631790c025a618dbbfa9a3b9edddd4c018e6ea2b99c7206fee3552554d5991e2e2ad4bcf645d2895e20235d04666cff31d52c40052b95a0
SSDEEP 1536:V+wFvn/Nrg4hC8adnp/KFiGwAiJGHPRjZ4+xjVKeyNPTryeBl93a:rv/N0eC8a1p/KFi7A9Z4+xjVzk/vfI
MD5 SHA1 SHA512 SSDEEP

Submit Download

Vamvenagxeh.xml

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\Vamvenagxeh.xml
Size 202KB
SHA256 82fba9b26434effda42f537ef323969a77d201192c351c854713f713b9acb578
MD5 ae56c12f65fece0a9f01a01d94cce257
SHA1 a43ad32e71d4fade9738fd3fbcb277654239579b
SHA512 0dc3764a78e7c5fee82a4f00c68b9a23a43e6dc37fb23aed8cbe7c31a5596cd404254b43d17c1783e4e788695cfc00179dab3a7b189c396685ff5a0a0c71ae53
SSDEEP 6144:MvfkkqDis3jRKtO9TOxlNY4/+TZd6hLcsyNeuGCFDu:sHfs3jRC6a+1shKcDf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3984-27-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/4232-18-0x0000000072FD2000-0x0000000072FD3000-memory.dmp

Download

memory/4232-19-0x0000000072FD0000-0x0000000073581000-memory.dmp

Download

memory/4232-20-0x0000000072FD0000-0x0000000073581000-memory.dmp

Download

memory/4232-23-0x0000000072FD0000-0x0000000073581000-memory.dmp

Download

memory/4232-24-0x0000000072FD2000-0x0000000072FD3000-memory.dmp

Download

memory/4232-25-0x0000000072FD0000-0x0000000073581000-memory.dmp

Download