nanocore | e7ab8ca6884e898d19278497714dd52c445792099797e6f1492d828c92680a39

General

Target

c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe
Size

793KB
MD5

c1e4d4238b60f144af5f26ab889eb068
SHA1

6e2693a80506b9a7ae4a4344f241b6c4ea2934d3
SHA256

e7ab8ca6884e898d19278497714dd52c445792099797e6f1492d828c92680a39
SHA512

83d8dc7d256f82c8d106f355b226af8d7e29678ac0fef331d7ea7bc7de71c75b9abd0a6b1d5ee51fd2adfc37a0ed565729b7f1dcd944bf90cdcd187c2ebd76cb
SSDEEP

24576:R8R/sBgrr2H03KOXdKi3CB0YNCweIp1F:BBqy0jbg09NIp1

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
Nanocore family
nanocore

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\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe
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

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

pid	Process
1456	schtasks.exe
3432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3776	MSBuild.exe
3776	MSBuild.exe
3776	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3776	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3776	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 4784 wrote to memory of 3776	4784	c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe	100
PID 3776 wrote to memory of 1456	3776	MSBuild.exe	101
PID 3776 wrote to memory of 1456	3776	MSBuild.exe	101
PID 3776 wrote to memory of 1456	3776	MSBuild.exe	101
PID 3776 wrote to memory of 3432	3776	MSBuild.exe	103
PID 3776 wrote to memory of 3432	3776	MSBuild.exe	103
PID 3776 wrote to memory of 3432	3776	MSBuild.exe	103

C:\Users\Admin\AppData\Local\Temp\c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c1e4d4238b60f144af5f26ab889eb068_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4784
- 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:3776
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2B8F.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1456
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2C2D.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3432

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\tmp2B8F.tmp

Filesize
1KB

MD5
ae766004c0d8792953bafffe8f6a2e3b

SHA1
14b12f27543a401e2fe0af8052e116cab0032426

SHA256
1abdd9b6a6b84e4ba1af1282dc84ce276c59ba253f4c4af05fea498a4fd99540

SHA512
e530da4a5d4336fc37838d0e93b5eb3804b9c489c71f6954a47fc81a4c655bb72ec493e109cf96e6e3617d7623ac80697ad3bbd5ffc6281bafc8b34dca5e6567

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2C2D.tmp

Filesize
1KB

MD5
0339b45ef206f4becc88be0d65e24b9e

SHA1
6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

SHA256
3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

SHA512
c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

Download Submit
memory/3776-13-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-22-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-21-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-20-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-19-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3776-9-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/3776-10-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-4-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/4784-8-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-5-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-0-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/4784-3-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-1-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/4784-2-0x0000000074F40000-0x00000000754F1000-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