nanocore | 8627a4712f0f6f4cd02e154ac0e9e1ded5e254ce9dc98b930baebcb9395d71df

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 02:25

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General

Target
KRSEL0000056286.JPG.scr
Size 1.0MB
Sample240404-cwqv9scf78
SHA256 940ad66c876976f4a05f12710687f5abb76443f693dd3986d1ff7a4c73fc866f
MD5 d6f040b4d7d217b8525dff843feba635
SHA1 8ed8beaceddf8e8e9ba4b601d1e985e5c7c2d7d9
SHA512 fcbd072ba0b64e41931cf9e5bb8b2b73fd18ee9788907f1791cb13a52450e5bc81732f7fcd0d8d4af737cca4e9b59658a5292129848dbb9a7197aa86e405a4b7
SSDEEP 24576:rAOcZEhIj7BkIMcXzBQuX+a6TPY5I7nT1RMwaz7:t8GI3XXN6c5IzTXM7P
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

strongodss.ddns.net:48562
185.19.85.175:48562

Mutex

ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6

Attributes

activate_away_mode
false
backup_connection_host
185.19.85.175
backup_dns_server
buffer_size
65538
build_time
2021-04-20T00:12:13.961451136Z
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
48562
default_group
HOBBIT
enable_debug_mode
true
gc_threshold
1.0485772e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.0485772e+07
mutex
ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
strongodss.ddns.net
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8009

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	KRSEL0000056286.JPG.scr

Executes dropped EXE 1 IoCs

pid	Process
3240	upstsdssm.pif

Adds Run key to start application 2 TTPs 3 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\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\UPSTSD~1.PIF C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\sqbr.wlw"	upstsdssm.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\Update.vbs"	upstsdssm.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WAN Service = "C:\\Program Files (x86)\\WAN Service\\wansvc.exe"	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\WAN Service\wansvc.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\WAN Service\wansvc.exe	RegSvcs.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2888	schtasks.exe
5076	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe
3520	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3520	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	RegSvcs.exe
Token: SeDebugPrivilege	3520	RegSvcs.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 3240	2624	KRSEL0000056286.JPG.scr	100
PID 2624 wrote to memory of 3240	2624	KRSEL0000056286.JPG.scr	100
PID 2624 wrote to memory of 3240	2624	KRSEL0000056286.JPG.scr	100
PID 3520 wrote to memory of 2888	3520	RegSvcs.exe	109
PID 3520 wrote to memory of 2888	3520	RegSvcs.exe	109
PID 3520 wrote to memory of 2888	3520	RegSvcs.exe	109
PID 3520 wrote to memory of 5076	3520	RegSvcs.exe	111
PID 3520 wrote to memory of 5076	3520	RegSvcs.exe	111
PID 3520 wrote to memory of 5076	3520	RegSvcs.exe	111

C:\Users\Admin\AppData\Local\Temp\KRSEL0000056286.JPG.scr
"C:\Users\Admin\AppData\Local\Temp\KRSEL0000056286.JPG.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif
  "C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif" sqbr.wlw
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:3240
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Adds Run key to start application
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3520
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp92CA.tmp"
      4⤵
      Creates scheduled task(s)
      PID:2888
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "WAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp93A6.tmp"
      4⤵
      Creates scheduled task(s)
      PID:5076

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3716 --field-trial-handle=2252,i,11231798169170618717,17890004712654885282,262144 --variations-seed-version /prefetch:8
1⤵
PID:4368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

upstsdssm.pif

Path C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif
Size 759KB
SHA256 c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40
MD5 8e699954f6b5d64683412cc560938507
SHA1 8ca6708b0f158eacce3ac28b23c23ed42c168c29
SHA512 13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02
SSDEEP 12288:aBzZm7d9AZAYJVB7ii/XAvKxRJBnwvogSJ4M4G4akiP5DGDt2:0cneJVBvXAvwRJdwvZ5akiP5DGR2
MD5 SHA1 SHA512 SSDEEP

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tmp92CA.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp92CA.tmp
Size 1KB
SHA256 8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
MD5 95aceabc58acad5d73372b0966ee1b35
SHA1 2293b7ad4793cf574b1a5220e85f329b5601040a
SHA512 00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74
MD5 SHA1 SHA512

Submit Download

tmp93A6.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp93A6.tmp
Size 1KB
SHA256 a57110ccf892c8ca9c9b28b2608f4d37a8b5df1bfcf1411e7c62b500e82fabda
MD5 9f0deb7cf87b4ae4efde9cc98ff481db
SHA1 760265641ce176e555c64bedb494f6f75fd0bd27
SHA512 6517829d9a09df437a340485bb87183c7a80135a76296308120e0ab385f5ffa7369a2ace9655ffaf1c594869cc6a20015520b6b0c681217b641b3c58127a29de
MD5 SHA1 SHA512

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memory/3520-68-0x0000000005D70000-0x0000000005E02000-memory.dmp

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memory/3520-67-0x00000000063F0000-0x0000000006994000-memory.dmp

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memory/3520-69-0x0000000005EE0000-0x0000000005F7C000-memory.dmp

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memory/3520-70-0x0000000006120000-0x0000000006130000-memory.dmp

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memory/3520-71-0x0000000005E40000-0x0000000005E4A000-memory.dmp

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memory/3520-66-0x0000000074350000-0x0000000074B00000-memory.dmp

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memory/3520-65-0x0000000001190000-0x00000000011CA000-memory.dmp

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memory/3520-79-0x0000000005EC0000-0x0000000005ECA000-memory.dmp

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memory/3520-80-0x0000000005ED0000-0x0000000005EDC000-memory.dmp

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memory/3520-81-0x0000000006040000-0x000000000605E000-memory.dmp

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memory/3520-82-0x00000000063E0000-0x00000000063EA000-memory.dmp

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memory/3520-83-0x0000000074350000-0x0000000074B00000-memory.dmp

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memory/3520-84-0x0000000006120000-0x0000000006130000-memory.dmp

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