nanocore | 5aa96db9610bf092123d6109c3b45576d2ac29f188c2fbce2c1182bc10aeb8f7

General

Target

88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe
Size

521KB
MD5

88e8376d99faf50c91286483a9f1b2e7
SHA1

f8d2458a28a1f140a67c3356364afe0e11ea4ec7
SHA256

5aa96db9610bf092123d6109c3b45576d2ac29f188c2fbce2c1182bc10aeb8f7
SHA512

56299a358bb1463cc5b76bcd9754c551802254a3a0a71c858437cc2f77256f5f539df3a790f14d5902b12452c9f6a8d4c0817a1d5d7934be2e5285e48c1e1bc8
SSDEEP

12288:lUomEFRu3xEPE2oR9hGVwB7kHfs3jRC6a+1shKcDB:jmOMSPE2oR9EVEEfs3g2pAB

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

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

Processes:

88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe

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

Processes:

Puyhrd.exePuyhrd.exe

pid process

4232 Puyhrd.exe
3984 Puyhrd.exe

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

Processes:

Puyhrd.exe

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

Processes:

Puyhrd.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Puyhrd.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Puyhrd.exe

description pid process target process

PID 4232 set thread context of 3984 4232 Puyhrd.exe Puyhrd.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Puyhrd.exe

description	pid	process	target process
PID 4232 set thread context of 3984	4232	Puyhrd.exe	Puyhrd.exe

Drops file in Program Files directory 2 IoCs

Processes:

Puyhrd.exe

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

Processes:

Puyhrd.exe

pid process

3984 Puyhrd.exe
3984 Puyhrd.exe
3984 Puyhrd.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Puyhrd.exe

pid process

3984 Puyhrd.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Puyhrd.exePuyhrd.exe

description pid process

Token: SeDebugPrivilege 4232 Puyhrd.exe
Token: SeDebugPrivilege 3984 Puyhrd.exe

pid	process
3984	Puyhrd.exe
3984	Puyhrd.exe
3984	Puyhrd.exe

pid	process
3984	Puyhrd.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exePuyhrd.exe

description	pid	process	target process
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	Puyhrd.exe
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	Puyhrd.exe
PID 2816 wrote to memory of 4232	2816	88e8376d99faf50c91286483a9f1b2e7_JaffaCakes118.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe
PID 4232 wrote to memory of 3984	4232	Puyhrd.exe	Puyhrd.exe

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 Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Flmigrmkwhrrxoeoa.png
Filesize
25KB

MD5
a336ccdac2e13bc7a70ac5e78dc307a2

SHA1
8ef0c014c2a66df8a63c5892ace855e319e92d46

SHA256
32408cc3ec9d6e7e1e35e24d50250873c8bbb935dbca6fbcc5ab6abc27ce34fe

SHA512
29c30bedeb8e59a461da301393432b3969f84786d8779ee602999a6e4befa7a4c4616369eba6bd85f043f112ac7ce2b9601b89b54a8baf9c61eac67e3ae23a40

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\M2
Filesize
38B

MD5
51f7a79c17515b34128bbc32a8d9d3ba

SHA1
782de841a02a53385851012252c3b4818c6788af

SHA256
fdd6087d9e0d11c44c4a90e52a19ac2de60e99bf2d6cfc5df2e745dddf38c2e2

SHA512
20b5eca2cc4b63a0679552e3668913f454d3a2d19ec03808a19680010ed785cfc74080f38f7ff73db58aa9d874d53af8eadcdcdc1e30682e37a9195f31c24e46

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Puyhrd.exe
Filesize
115KB

MD5
a850751537b88c9144e226f7cbb7de14

SHA1
b1999b22d42d5486fd0db1b5d3243fd328239cd4

SHA256
e5ab5f6432457ca797e43ce2e1edc280520ef3fe45e2ae477fbe2a5c418bd018

SHA512
d029da5f527109d19631790c025a618dbbfa9a3b9edddd4c018e6ea2b99c7206fee3552554d5991e2e2ad4bcf645d2895e20235d04666cff31d52c40052b95a0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Vamvenagxeh.xml
Filesize
202KB

MD5
ae56c12f65fece0a9f01a01d94cce257

SHA1
a43ad32e71d4fade9738fd3fbcb277654239579b

SHA256
82fba9b26434effda42f537ef323969a77d201192c351c854713f713b9acb578

SHA512
0dc3764a78e7c5fee82a4f00c68b9a23a43e6dc37fb23aed8cbe7c31a5596cd404254b43d17c1783e4e788695cfc00179dab3a7b189c396685ff5a0a0c71ae53

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

Filesize
224KB

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

Filesize
4KB

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

Filesize
5.7MB

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

Filesize
5.7MB

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

Filesize
5.7MB

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

Filesize
4KB

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

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads