nanocore | e62cf9d91a1eb2f7f136ae69bc3c6249bf69e25e5797069241e09e6d5d9834e9

General

Target

4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe
Size

765KB
MD5

4bd9f6838217475367f4750c7ccd1947
SHA1

e3263abd5c1295c48ecfced1cee8329fb9c4265e
SHA256

e62cf9d91a1eb2f7f136ae69bc3c6249bf69e25e5797069241e09e6d5d9834e9
SHA512

3166bbb50d75380c1e146e8d0bdce434e6d365d779ee7add4687920898d6fa36c243de1e451502fcf5deac67e93b2b9b7163389033a4e3535ce2a1d71d7cc7e3
SSDEEP

12288:OR52iNeHK7z1bBLRXVOFMRJMM2Lcmt7vtXPToGYX1IzkuHfFuQs5rauiRVpb:21bhte+HqDfXP0GYFIzFHfFoTY

Score

10^/10

nanocore discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.98.52:2303

127.0.0.1:2303

Mutex

47fccab7-b2e4-4386-ae4c-8610c25adecb

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-05-21T12:28:36.512291536Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
2303
default_group
nanofile
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
true
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
47fccab7-b2e4-4386-ae4c-8610c25adecb
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
194.5.98.52
primary_dns_server
8.8.8.8
request_elevation
false
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:

MSBuild.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ARP Monitor = "C:\\Program Files (x86)\\ARP Monitor\\arpmon.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4652 set thread context of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101

Drops file in Program Files directory 2 IoCs

Processes:

MSBuild.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\ARP Monitor\arpmon.exe	MSBuild.exe
File created	C:\Program Files (x86)\ARP Monitor\arpmon.exe	MSBuild.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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:

MSBuild.exeschtasks.exeschtasks.exe4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exe

pid	Process
3216	schtasks.exe
4768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exeMSBuild.exe

pid	Process
4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe
3612	MSBuild.exe
3612	MSBuild.exe
3612	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

MSBuild.exe

pid	Process
3612	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exeMSBuild.exe

description	pid	Process
Token: SeDebugPrivilege	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe
Token: SeDebugPrivilege	3612	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exeMSBuild.exe

description	pid	Process	procid_target
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 4652 wrote to memory of 3612	4652	4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe	101
PID 3612 wrote to memory of 4768	3612	MSBuild.exe	102
PID 3612 wrote to memory of 4768	3612	MSBuild.exe	102
PID 3612 wrote to memory of 4768	3612	MSBuild.exe	102
PID 3612 wrote to memory of 3216	3612	MSBuild.exe	104
PID 3612 wrote to memory of 3216	3612	MSBuild.exe	104
PID 3612 wrote to memory of 3216	3612	MSBuild.exe	104

C:\Users\Admin\AppData\Local\Temp\4bd9f6838217475367f4750c7ccd1947_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4bd9f6838217475367f4750c7ccd1947_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:4652
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
  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:3612
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ARP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7097.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4768
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ARP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp70E6.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7097.tmp

Filesize
1KB

MD5
ae766004c0d8792953bafffe8f6a2e3b

SHA1
14b12f27543a401e2fe0af8052e116cab0032426

SHA256
1abdd9b6a6b84e4ba1af1282dc84ce276c59ba253f4c4af05fea498a4fd99540

SHA512
e530da4a5d4336fc37838d0e93b5eb3804b9c489c71f6954a47fc81a4c655bb72ec493e109cf96e6e3617d7623ac80697ad3bbd5ffc6281bafc8b34dca5e6567

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp70E6.tmp

Filesize
1KB

MD5
acc7d7829edec6af26aa18f8ca7776ef

SHA1
29f5290d08127f29924a2eb189e21b9bcfbb6f3a

SHA256
2165ad57e4cd29e911a2861e1fe6366ce11912c95f8e5ede61d247b75753001a

SHA512
07e84e0f7eb030dc0f2efde201c023051a2559dbdcde957fea73669a6e2deac9848cf3503e4e7f9524660d61ead850632bb998f12b73b887dfe841286002bc5b

Download Submit
memory/3612-9-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-22-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-21-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-20-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-19-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3612-8-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/3612-10-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/4652-4-0x0000000074F92000-0x0000000074F93000-memory.dmp

Filesize
4KB

Download
memory/4652-11-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/4652-5-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/4652-0-0x0000000074F92000-0x0000000074F93000-memory.dmp

Filesize
4KB

Download
memory/4652-3-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/4652-2-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download
memory/4652-1-0x0000000074F90000-0x0000000075541000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads