nanocore | 9d62519901eb09910056ef1e695e965e4edd7907e1ecbf5de0599feba14a5a4a

General

Target

TAX-INVOICE-2021083902002892_xcod..exe
Size

1.8MB
MD5

4b9ea726f103977e15953192a2e90ca8
SHA1

0e276a177d99038745203c74c664338974cb7589
SHA256

26f5e5a6934f7a01450d45745ff1622d20ac675b314906d72ad88bc3e358e219
SHA512

b0fa16e8011393b6b1830f59591112638da4f732455a7e2d885c2e88e9483f2978a3f6b2afcf588f2d8ea6aa6fb7682210defba45d2468499287a6ec423ef3ee
SSDEEP

24576:kygmHJA3Ip6bmLUvhQ4gbPKTA/UTTeb/7IJKyhm2mYOIpju3nMN:KmHG46bmIukQIn

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.98.127:54984

127.0.0.1:54984

Mutex

3994e0df-038e-4283-9a6f-7af7d7806576

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-05-16T10:50:52.692208236Z
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
54984
default_group
iyke
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
3994e0df-038e-4283-9a6f-7af7d7806576
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
194.5.98.127
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

Executes dropped EXE 2 IoCs

pid	Process
2884	19625VieAuLFc3F.exe
468	19625VieAuLFc3F.exe

Loads dropped DLL 2 IoCs

pid	Process
2396	TAX-INVOICE-2021083902002892_xcod..exe
2884	19625VieAuLFc3F.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\ISS Host = "C:\\Program Files (x86)\\ISS Host\\isshost.exe"	19625VieAuLFc3F.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	19625VieAuLFc3F.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 468	2884	19625VieAuLFc3F.exe	33

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ISS Host\isshost.exe	19625VieAuLFc3F.exe
File opened for modification	C:\Program Files (x86)\ISS Host\isshost.exe	19625VieAuLFc3F.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 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TAX-INVOICE-2021083902002892_xcod..exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19625VieAuLFc3F.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19625VieAuLFc3F.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
2756	schtasks.exe
2928	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
468	19625VieAuLFc3F.exe
468	19625VieAuLFc3F.exe
468	19625VieAuLFc3F.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
468	19625VieAuLFc3F.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	468	19625VieAuLFc3F.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2128	DllHost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2128	DllHost.exe
2128	DllHost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2884	2396	TAX-INVOICE-2021083902002892_xcod..exe	32
PID 2396 wrote to memory of 2884	2396	TAX-INVOICE-2021083902002892_xcod..exe	32
PID 2396 wrote to memory of 2884	2396	TAX-INVOICE-2021083902002892_xcod..exe	32
PID 2396 wrote to memory of 2884	2396	TAX-INVOICE-2021083902002892_xcod..exe	32
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 2884 wrote to memory of 468	2884	19625VieAuLFc3F.exe	33
PID 468 wrote to memory of 2756	468	19625VieAuLFc3F.exe	34
PID 468 wrote to memory of 2756	468	19625VieAuLFc3F.exe	34
PID 468 wrote to memory of 2756	468	19625VieAuLFc3F.exe	34
PID 468 wrote to memory of 2756	468	19625VieAuLFc3F.exe	34
PID 468 wrote to memory of 2928	468	19625VieAuLFc3F.exe	36
PID 468 wrote to memory of 2928	468	19625VieAuLFc3F.exe	36
PID 468 wrote to memory of 2928	468	19625VieAuLFc3F.exe	36
PID 468 wrote to memory of 2928	468	19625VieAuLFc3F.exe	36

C:\Users\Admin\AppData\Local\Temp\TAX-INVOICE-2021083902002892_xcod..exe
"C:\Users\Admin\AppData\Local\Temp\TAX-INVOICE-2021083902002892_xcod..exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Local\Temp\19625VieAuLFc3F.exe
  "C:\Users\Admin\AppData\Local\Temp\19625VieAuLFc3F.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Users\Admin\AppData\Local\Temp\19625VieAuLFc3F.exe
    "C:\Users\Admin\AppData\Local\Temp\19625VieAuLFc3F.exe"
    3⤵
    - Executes dropped EXE
    - 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:468
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ISS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC207.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2756
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ISS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC276.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2928

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2128

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\19625VieAuLFc3F.exe

Filesize
1.3MB

MD5
f2d5e0e653500f27745cdfe48f4f61df

SHA1
a48a9576d1ed82c644b6678d1a9efc180e125bbc

SHA256
a5ea7531303b41672f2e367e290f0b79c72ac4f678a394fb61e16336b5e36af1

SHA512
b8a4f82b1dfa0dbdcaf05507362209a1d06e63ce3c1b4484bc18b7fe83e2144f2d8ca5181f18be412db7dfe8b0bbe577eaadfce1c51bb6312528b4b471889c5e

Download Submit
C:\Users\Admin\AppData\Local\Temp\favicon.ico

Filesize
14KB

MD5
ac64a14d05248087f4eac7e258b42dda

SHA1
4d7e79254931d48b42c2e487887590fed474e486

SHA256
ffae642e9ab5a306fba379f72a558a9372467c04e337765f9e9b7b48ee6acc18

SHA512
863248bdba387f30b62f06b057072714174f64acef54deeeb5943541d2b7226eb43ec46f8aa0278488da6edd5bd21ebe813a4cf480e87989d04153ce4d19b852

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC207.tmp

Filesize
1KB

MD5
26ee896bb9ebc645c101d6907f258a07

SHA1
7dc9c0f892360ff0d7d2805f157925c101949674

SHA256
9f81492d95a2c5d22b5e9023e13c647feb5539fb90e54b21ab527727fafe34e0

SHA512
d655e5202d66b9b30355194de6e0950477ebeb28467cab705b9db45d5df8194947d784642fbfdc9fa67a94ace089512e6ef2ce78f15723f5b51fa049822e81d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC276.tmp

Filesize
1KB

MD5
3d1580c0395f6de62659467f5b7f1acf

SHA1
8e73a3885896cecca7ff799a272fc9ddfe06ea96

SHA256
6f40196c42a171f24a3e16edeca664cdc5a2f7c150d468255b0e14ab10a2b714

SHA512
7637c0d9b03227dffcb00a68d97ddce60bfc40ca0f8a7a4bbd700ea56be6d570908511dea5cab9f609a7da2e558e5298c482fd1e330af085f9c52867d5a847ea

Download Submit
memory/468-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/468-25-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-17-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-28-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-27-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/468-20-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2128-5-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/2396-0-0x0000000074061000-0x0000000074062000-memory.dmp

Filesize
4KB

Download
memory/2396-4-0x0000000000B30000-0x0000000000B32000-memory.dmp

Filesize
8KB

Download
memory/2396-12-0x0000000074060000-0x000000007460B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-2-0x0000000074060000-0x000000007460B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-1-0x0000000074060000-0x000000007460B000-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