nanocore | 87fc7b8785072dab2c9402433c98c2533b2c08ea2eeb1ecc839f13585c8a6f15

Analysis

max time kernel
141s
max time network
146s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 07:53

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General

Target

REVISE_RECBTAAH-PI.exe
Size

676KB
MD5

d0c54245dc16324c9170c419f2500737
SHA1

642c7dd025dc31d39b26af7a7be53ba617e78bd4
SHA256

6c22578a9080fc7f38d949df46f1bb88f386fd17ad76d78cac31e5b7782a2685
SHA512

1e95e9efc025c53192de36154f51198181ec445145fdfe7f3b1afc83956cc49a04cbd9c6d318dde926da27057cf149565f5de5cb4208cfa78e01eef3f1f582e4
SSDEEP

12288:49TK3cUmdavrlTGt5jw0LECUfE1F1Yl7tpkA1A9:0K3cFd6JNbDc13SHkG

Score

10^/10

nanocore discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

45.66.231.103:7754

7754.hopto.org:7754

Mutex

cee2b15d-82f8-4d85-8dc9-22fd50400675

Attributes

activate_away_mode
true
backup_connection_host
7754.hopto.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-06-21T07:47:09.033387236Z
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
7754
default_group
7754Nano
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
cee2b15d-82f8-4d85-8dc9-22fd50400675
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
45.66.231.103
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2908	powershell.exe
2912	powershell.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\PCI Service = "C:\\Program Files (x86)\\PCI Service\\pcisv.exe"	REVISE_RECBTAAH-PI.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	REVISE_RECBTAAH-PI.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2308 set thread context of 1852	2308	REVISE_RECBTAAH-PI.exe	36

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PCI Service\pcisv.exe	REVISE_RECBTAAH-PI.exe
File opened for modification	C:\Program Files (x86)\PCI Service\pcisv.exe	REVISE_RECBTAAH-PI.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 7 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	REVISE_RECBTAAH-PI.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REVISE_RECBTAAH-PI.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 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2696	schtasks.exe
940	schtasks.exe
2800	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2308	REVISE_RECBTAAH-PI.exe
2308	REVISE_RECBTAAH-PI.exe
2308	REVISE_RECBTAAH-PI.exe
2908	powershell.exe
2912	powershell.exe
1852	REVISE_RECBTAAH-PI.exe
1852	REVISE_RECBTAAH-PI.exe
1852	REVISE_RECBTAAH-PI.exe
1852	REVISE_RECBTAAH-PI.exe
1852	REVISE_RECBTAAH-PI.exe
1852	REVISE_RECBTAAH-PI.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1852	REVISE_RECBTAAH-PI.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	REVISE_RECBTAAH-PI.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeDebugPrivilege	1852	REVISE_RECBTAAH-PI.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2908	2308	REVISE_RECBTAAH-PI.exe	30
PID 2308 wrote to memory of 2908	2308	REVISE_RECBTAAH-PI.exe	30
PID 2308 wrote to memory of 2908	2308	REVISE_RECBTAAH-PI.exe	30
PID 2308 wrote to memory of 2908	2308	REVISE_RECBTAAH-PI.exe	30
PID 2308 wrote to memory of 2912	2308	REVISE_RECBTAAH-PI.exe	32
PID 2308 wrote to memory of 2912	2308	REVISE_RECBTAAH-PI.exe	32
PID 2308 wrote to memory of 2912	2308	REVISE_RECBTAAH-PI.exe	32
PID 2308 wrote to memory of 2912	2308	REVISE_RECBTAAH-PI.exe	32
PID 2308 wrote to memory of 2800	2308	REVISE_RECBTAAH-PI.exe	33
PID 2308 wrote to memory of 2800	2308	REVISE_RECBTAAH-PI.exe	33
PID 2308 wrote to memory of 2800	2308	REVISE_RECBTAAH-PI.exe	33
PID 2308 wrote to memory of 2800	2308	REVISE_RECBTAAH-PI.exe	33
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 2308 wrote to memory of 1852	2308	REVISE_RECBTAAH-PI.exe	36
PID 1852 wrote to memory of 2696	1852	REVISE_RECBTAAH-PI.exe	37
PID 1852 wrote to memory of 2696	1852	REVISE_RECBTAAH-PI.exe	37
PID 1852 wrote to memory of 2696	1852	REVISE_RECBTAAH-PI.exe	37
PID 1852 wrote to memory of 2696	1852	REVISE_RECBTAAH-PI.exe	37
PID 1852 wrote to memory of 940	1852	REVISE_RECBTAAH-PI.exe	39
PID 1852 wrote to memory of 940	1852	REVISE_RECBTAAH-PI.exe	39
PID 1852 wrote to memory of 940	1852	REVISE_RECBTAAH-PI.exe	39
PID 1852 wrote to memory of 940	1852	REVISE_RECBTAAH-PI.exe	39

C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe
"C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oFNArmC.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFNArmC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp445.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2800
- C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe
  "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.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:1852
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5AC.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2696
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "PCI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5FB.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp445.tmp

Filesize
1KB

MD5
892251d48b092bdab79cea7aa432cc6b

SHA1
74e3277639c2f14a221bd4985b10b3e832a1cbfc

SHA256
e55ea6cce3927fc672aa3ce17cdf905238721624d5fe4d7dd216591071d4c8b3

SHA512
9049f2f521d972dcbda86ba7d284791ce9c5619d5df59b7b07e6dd4f505c01e9ef4184ea328201bd5ea5988602c15a1f08b860b858dbcfe1c2962bc13e884d6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5AC.tmp

Filesize
1KB

MD5
6f7560bbdc552da8ecfe72886865afcf

SHA1
12a6ca08cd14fabeb51cf51b08f0ef0e0ba79591

SHA256
eb97db02099f25f5dd11e261332a13cb1c3ae3d5b9a0568ffbae797d35cc60cb

SHA512
04b41d85b00806697f3f8951eb99edfe559baa6bf81f77787b64b4e5cd2b3f5dce2b0120d58fb18dc9ee051486bac706618063781b51095ab7fcb008755ce679

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5FB.tmp

Filesize
1KB

MD5
bbb0d424bb7cb3b0e6aeb68cf82b8f5f

SHA1
7e95dcd21a27ee53e5c23ed5a163df56a43d572a

SHA256
08d6bee474edf0151a0d8ff942ba9e6a1efe069585c63477abd1c7bd8046e130

SHA512
0dc790a415f9717f6e7633c1d5f2749a2eca5582c5bbe114119c3ddba6d4e4d0df48029622e2fe07f94d8ae97c334b88691b7721da50ada261449769ae31d466

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
681f00897839bd292d2f2d6c87c63264

SHA1
d611ea87f59f7f9ddbc440fb0496d17cb83e6238

SHA256
0cb7879310b6054a3c3a01d3e42840a1dba2392bb4e1ec40c01608d3f0c039a7

SHA512
3489dfe2440ba95949d5526220b58a6903248dc0af6036be51a3e52fe5fdd7ca386644576a973e92b7930afd991f207138d706ffd0f667d3ffd8c7635e861ff2

Download Submit
memory/1852-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-48-0x00000000021C0000-0x00000000021CE000-memory.dmp

Filesize
56KB

Download
memory/1852-53-0x0000000004390000-0x000000000439E000-memory.dmp

Filesize
56KB

Download
memory/1852-54-0x00000000048A0000-0x00000000048CE000-memory.dmp

Filesize
184KB

Download
memory/1852-55-0x00000000043B0000-0x00000000043C4000-memory.dmp

Filesize
80KB

Download
memory/1852-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1852-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1852-52-0x0000000004380000-0x0000000004394000-memory.dmp

Filesize
80KB

Download
memory/1852-51-0x0000000002230000-0x0000000002240000-memory.dmp

Filesize
64KB

Download
memory/1852-49-0x0000000002210000-0x000000000221C000-memory.dmp

Filesize
48KB

Download
memory/1852-50-0x0000000002220000-0x0000000002234000-memory.dmp

Filesize
80KB

Download
memory/1852-39-0x0000000000660000-0x000000000066A000-memory.dmp

Filesize
40KB

Download
memory/1852-40-0x0000000000670000-0x000000000068E000-memory.dmp

Filesize
120KB

Download
memory/1852-41-0x00000000006E0000-0x00000000006EA000-memory.dmp

Filesize
40KB

Download
memory/1852-44-0x0000000000750000-0x0000000000762000-memory.dmp

Filesize
72KB

Download
memory/1852-45-0x0000000002060000-0x000000000207A000-memory.dmp

Filesize
104KB

Download
memory/1852-46-0x00000000020D0000-0x00000000020DE000-memory.dmp

Filesize
56KB

Download
memory/1852-47-0x00000000021A0000-0x00000000021B2000-memory.dmp

Filesize
72KB

Download
memory/2308-5-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-1-0x0000000000890000-0x0000000000940000-memory.dmp

Filesize
704KB

Download
memory/2308-2-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-31-0x0000000074160000-0x000000007484E000-memory.dmp

Filesize
6.9MB

Download
memory/2308-0-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2308-3-0x0000000000580000-0x0000000000590000-memory.dmp

Filesize
64KB

Download
memory/2308-4-0x000000007416E000-0x000000007416F000-memory.dmp

Filesize
4KB

Download
memory/2308-6-0x0000000005FF0000-0x000000000606A000-memory.dmp

Filesize
488KB

Download