nanocore | 14cbcecd74404de69986a6520093e42b2fb319d70498755e0ac27b534e4d9930

General

Target

a831568c2b5d890220188dfcf3ee3b80N.exe
Size

1.1MB
MD5

a831568c2b5d890220188dfcf3ee3b80
SHA1

7776dbe3612b07dbf2d454638bcf8fb5a914648c
SHA256

14cbcecd74404de69986a6520093e42b2fb319d70498755e0ac27b534e4d9930
SHA512

cf55ba8caed584627addf43acfd8286e9e3f538e023cb1ad2cb891a02d20d116ee453e22e6767f4d6f3384c0f3bf165110a388fa49553330ddb2df9e4ba36819
SSDEEP

24576:1AHnh+eWsN3skA4RV1Hom2KXMmHahZB/Nep86f3YAm4W5O:kh+ZkldoPK8Yahb/NKKAm9O

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

160.202.163.242:6765

Mutex

c0a66e70-712e-4e13-85d0-5362a812b1a5

Attributes

activate_away_mode
true
backup_connection_host
160.202.163.242
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-02-24T16:03:16.653191036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
6765
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
c0a66e70-712e-4e13-85d0-5362a812b1a5
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
160.202.163.242
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VsGraphicsDesktopEngine.lnk	a831568c2b5d890220188dfcf3ee3b80N.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\DOS Manager = "C:\\Program Files (x86)\\DOS Manager\\dosmgr.exe"	RegAsm.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	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2952 set thread context of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DOS Manager\dosmgr.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\DOS Manager\dosmgr.exe	RegAsm.exe

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

System Information Discovery
T1082

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	RegAsm.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	a831568c2b5d890220188dfcf3ee3b80N.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
2680	schtasks.exe
1624	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2996	RegAsm.exe
2996	RegAsm.exe
2996	RegAsm.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2996	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe
2952	a831568c2b5d890220188dfcf3ee3b80N.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2952 wrote to memory of 2996	2952	a831568c2b5d890220188dfcf3ee3b80N.exe	29
PID 2996 wrote to memory of 2680	2996	RegAsm.exe	30
PID 2996 wrote to memory of 2680	2996	RegAsm.exe	30
PID 2996 wrote to memory of 2680	2996	RegAsm.exe	30
PID 2996 wrote to memory of 2680	2996	RegAsm.exe	30
PID 2996 wrote to memory of 1624	2996	RegAsm.exe	32
PID 2996 wrote to memory of 1624	2996	RegAsm.exe	32
PID 2996 wrote to memory of 1624	2996	RegAsm.exe	32
PID 2996 wrote to memory of 1624	2996	RegAsm.exe	32

C:\Users\Admin\AppData\Local\Temp\a831568c2b5d890220188dfcf3ee3b80N.exe
"C:\Users\Admin\AppData\Local\Temp\a831568c2b5d890220188dfcf3ee3b80N.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - 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:2996
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DOS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9444.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2680
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DOS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp955E.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1624

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 Information Discovery

2

T1082

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\tmp9444.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp955E.tmp

Filesize
1KB

MD5
8f5713b14cee3089852f6c8d2a7a7d57

SHA1
8bffbea05715c6434ad593cce8a2c737f80ff788

SHA256
ab3ce102242c3144f87bcbfe83984a478821cd09e62c0e5211b2ab37dde02d2c

SHA512
82bd2378c2d6bb34a1ad3f2d26bfea583fc8403691bed6668521ba3e8bc7bdbdf142f872ddbc8e5251550f47c9bbee4eb3d0d6096f80d85259082cf68a454c72

Download Submit
memory/2952-3-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2996-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2996-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2996-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2996-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2996-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2996-13-0x0000000073DA2000-0x0000000073DA4000-memory.dmp

Filesize
8KB

Download
memory/2996-21-0x0000000073DA2000-0x0000000073DA4000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads