nanocore | f5ed244699bfd20b6c2a9fe44f2f99aba7d0c7a27419da8c65342878d949d688

General

Target

508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe
Size

326KB
MD5

508d20f4ac741b76d4fe3e4c2a51bbcd
SHA1

1cfe2d1d325c0ecddcd805a9857ee7b3cdebf4ec
SHA256

f5ed244699bfd20b6c2a9fe44f2f99aba7d0c7a27419da8c65342878d949d688
SHA512

2874a61be9ff2f634c39f8b68ba2a2d060e42a04a25029142d681da55cf6d742d12716a625b67120c70e92ebc81a1f0cc93851aab2f4032c28a792205e8eb296
SSDEEP

6144:Gl7ZoMg2kwi+M4JfLrhqtNfjfa3EYNFlV4/WIdjqmcpg1paUAd4wIzWQ:UntiyJfL+Lfa3E4+CpgzaUA3

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

181.215.247.6:5655

Mutex

c7bb6209-5622-4e29-820a-dbb0cb99e820

Attributes

activate_away_mode
true
backup_connection_host
181.215.247.6
backup_dns_server
buffer_size
65535
build_time
2017-04-17T11:05:54.312394636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
5655
default_group
money team
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
c7bb6209-5622-4e29-820a-dbb0cb99e820
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
181.215.247.6
primary_dns_server
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:

508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

app.exe

pid process

1196 app.exe

pid	process
1196	app.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.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"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

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

Processes:

app.exe

description pid process target process

PID 1196 set thread context of 1012 1196 app.exe RegAsm.exe

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

description	pid	process	target process
PID 1196 set thread context of 1012	1196	app.exe	RegAsm.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegAsm.exe

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

RegAsm.exe

pid process

1012 RegAsm.exe
1012 RegAsm.exe
1012 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

1012 RegAsm.exe

pid	process
1012	RegAsm.exe
1012	RegAsm.exe
1012	RegAsm.exe

pid	process
1012	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exeapp.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	608	508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe
Token: SeDebugPrivilege	1196	app.exe
Token: SeDebugPrivilege	1012	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exeapp.exe

description	pid	process	target process
PID 608 wrote to memory of 1196	608	508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe	app.exe
PID 608 wrote to memory of 1196	608	508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe	app.exe
PID 608 wrote to memory of 1196	608	508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe	app.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe
PID 1196 wrote to memory of 1012	1196	app.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\508d20f4ac741b76d4fe3e4c2a51bbcd_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:608

C:\Users\Admin\AppData\Local\app.exe
"C:\Users\Admin\AppData\Local\app.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1196

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
3⤵
- 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:1012

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\app.exe
Filesize
326KB

MD5
508d20f4ac741b76d4fe3e4c2a51bbcd

SHA1
1cfe2d1d325c0ecddcd805a9857ee7b3cdebf4ec

SHA256
f5ed244699bfd20b6c2a9fe44f2f99aba7d0c7a27419da8c65342878d949d688

SHA512
2874a61be9ff2f634c39f8b68ba2a2d060e42a04a25029142d681da55cf6d742d12716a625b67120c70e92ebc81a1f0cc93851aab2f4032c28a792205e8eb296

Download Submit
memory/608-18-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/608-3-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/608-4-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/608-0-0x0000000074842000-0x0000000074843000-memory.dmp

Filesize
4KB

Download
memory/608-2-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/608-1-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-25-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-30-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-27-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-26-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1012-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1196-20-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1196-24-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1196-21-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1196-19-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1196-17-0x0000000074840000-0x0000000074DF1000-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