nanocore | b9e2aff345e16ac8c58b020b5a4ecc159d545f1b303f2c830b0f5a221468b639

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/08/2026, 05:03

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General

Target
VHS558.exe
Size 203KB
Sample260802-fp8dhsdd64
SHA256 b9e2aff345e16ac8c58b020b5a4ecc159d545f1b303f2c830b0f5a221468b639
MD5 cb0ad057ddf245740b066a8b0b1b9f99
SHA1 7cda02d06957811c1754b5495358e229ef7123a0
SHA512 846bf99794ae510f3601850de6ab9e463f5bd1d03579f3b8f7dd09cb9a431808c0e361f42c0583337e46ab1d3a12419a152e6d68c6653c79fbcd34a5d38c9105
SSDEEP 6144:sLV6Bta6dtJmakIM5BZmvN1onPN5rjfmQx:sLV6BtpmkfvN1MNR1x
TLSH
T1D314CF167BA88A2FE2DE8679601252129378C2E3D8C3F3DF28D855B65F177E50A470D3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

kema.io:443
www.kema.io:443

Mutex

3df2f1a4-08ce-4c2f-85a6-c5603db0d056

Attributes

activate_away_mode
true
backup_connection_host
www.kema.io
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2026-05-14T06:19:16.097475936Z
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
443
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
3df2f1a4-08ce-4c2f-85a6-c5603db0d056
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
kema.io
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

Family: NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Executes dropped EXE 1 IoCs

pid	Process
4732	scsimon.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\SCSI Monitor = "C:\\Program Files (x86)\\SCSI Monitor\\scsimon.exe"	VHS558.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	VHS558.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SCSI Monitor\scsimon.exe	VHS558.exe
File opened for modification	C:\Program Files (x86)\SCSI Monitor\scsimon.exe	VHS558.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	VHS558.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	scsimon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VHS558.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
4608	schtasks.exe
2724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe
2748	VHS558.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2748	VHS558.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	VHS558.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 2724	2748	VHS558.exe	86
PID 2748 wrote to memory of 4608	2748	VHS558.exe	88

C:\Users\Admin\AppData\Local\Temp\VHS558.exe
"C:\Users\Admin\AppData\Local\Temp\VHS558.exe"
1⤵
- 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:2748
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SCSI Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp755A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2724
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SCSI Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7607.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4608

C:\Program Files (x86)\SCSI Monitor\scsimon.exe
"C:\Program Files (x86)\SCSI Monitor\scsimon.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4732

C:\Users\Admin\AppData\Local\Temp\VHS558.exe
"C:\Users\Admin\AppData\Local\Temp\VHS558.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2208

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

scsimon.exe

Path C:\Program Files (x86)\SCSI Monitor\scsimon.exe
Size 203KB
SHA256 b9e2aff345e16ac8c58b020b5a4ecc159d545f1b303f2c830b0f5a221468b639
MD5 cb0ad057ddf245740b066a8b0b1b9f99
SHA1 7cda02d06957811c1754b5495358e229ef7123a0
SHA512 846bf99794ae510f3601850de6ab9e463f5bd1d03579f3b8f7dd09cb9a431808c0e361f42c0583337e46ab1d3a12419a152e6d68c6653c79fbcd34a5d38c9105
SSDEEP 6144:sLV6Bta6dtJmakIM5BZmvN1onPN5rjfmQx:sLV6BtpmkfvN1MNR1x
TLSH
T1D314CF167BA88A2FE2DE8679601252129378C2E3D8C3F3DF28D855B65F177E50A470D3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tmp755A.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp755A.tmp
Size 1KB
SHA256 e26a46aa8b3a2fa32983ffb58de5155eb23efe74d834601eda9d5cf821203523
MD5 59e9be0f9ac56d27ea9b63590ec80de2
SHA1 cc9698414f37bdc341fe94925031823fbed4597a
SHA512 c744bb8bd0a73f2daa5c4b68632a8d1b0b1c501ee6bb0c48f48206433fe5c1563a42fc59823181446dcd7d7a9749002e5b36da62f2e194204e2b4fa57cfe6c0a
TLSH
T13B21C064ACC0F61F66715629A39197C2DF2A57A301564138FCCC4E7F3FB6186304316B
MD5 SHA1 SHA512 TLSH

Submit Download

tmp7607.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp7607.tmp
Size 1KB
SHA256 d4ba6219d0aff5a36d129a8475cf35b00043d205f751f63ddd56a5c7d4a03ff3
MD5 2862e61d09852ea2886c036af0465051
SHA1 45e30b14543868213f7f1cba0a1e0cc840fb2cd2
SHA512 33dfd9d12adaa19dd3d4dd7013930e233dd3ff1d114e1e86e50d20ffa848a27582eebdffc09ab974b8de86316c01da6f6254f349992ad507d0f8b13cf0e36579
TLSH
T1BF21C064ACC0F61B66715639A39197C2DF2A97A301564138FCCC4E7F2FB6186305316B
MD5 SHA1 SHA512 TLSH

Submit Download

memory/2208-15-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/2208-14-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/2208-21-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/2748-9-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/2748-1-0x0000000075472000-0x0000000075474000-memory.dmp

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memory/2748-0-0x0000000001020000-0x0000000001030000-memory.dmp

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memory/2748-16-0x0000000001020000-0x0000000001030000-memory.dmp

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memory/2748-17-0x0000000075472000-0x0000000075474000-memory.dmp

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memory/2748-22-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/4732-12-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/4732-13-0x0000000075470000-0x0000000075A21000-memory.dmp

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memory/4732-19-0x0000000075470000-0x0000000075A21000-memory.dmp

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