nanocore | 55edcf08f8521a9cddde8570baaac0ab8ef6e640e96c834db0e5c12f5b9c68fe

Analysis

max time kernel
134s
max time network
145s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:18 UTC

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General

Target

f2259737b967bbe88fc74916f319c61a.exe
Size

914KB
MD5

f2259737b967bbe88fc74916f319c61a
SHA1

d4aa76d4aeaebb6db93b4131c81fc898cb48f901
SHA256

b4dc13b87fda606c84b1ac2e9a3ae2d16f24aa5ff389b6cb0f550dd517986cba
SHA512

560b28ea6b8d8b67f0a0707f819204d8b4f49614d668ab2a367acc67fb437562c8163cb4b6ccb70186945f58d788b0d1e5e44d0e238f96b03e70ad245c1f70d0
SSDEEP

24576:CdtP2cbksTpugRNJI5kFMJF9OWjwjLOjZV:fgq7

Score

10^/10

nanocore discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

91.236.116.142:5888

Mutex

d995ed82-bf13-4043-b564-f5f89f8c5209

Attributes

activate_away_mode
true
backup_connection_host
91.236.116.142
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2017-01-07T03:01:54.729778636Z
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
5888
default_group
Spy
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
d995ed82-bf13-4043-b564-f5f89f8c5209
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
91.236.116.142
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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 1 IoCs

pid	Process
1676	app.exe

Loads dropped DLL 1 IoCs

pid	Process
2328	f2259737b967bbe88fc74916f319c61a.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\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\app.exe"	f2259737b967bbe88fc74916f319c61a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 1072	1676	app.exe	32

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	f2259737b967bbe88fc74916f319c61a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	app.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2220	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2328	f2259737b967bbe88fc74916f319c61a.exe
2328	f2259737b967bbe88fc74916f319c61a.exe
2328	f2259737b967bbe88fc74916f319c61a.exe
2328	f2259737b967bbe88fc74916f319c61a.exe
2328	f2259737b967bbe88fc74916f319c61a.exe
2328	f2259737b967bbe88fc74916f319c61a.exe
1676	app.exe
1676	app.exe
1676	app.exe
1676	app.exe
1676	app.exe
1676	app.exe
1072	aspnet_compiler.exe
1072	aspnet_compiler.exe
1072	aspnet_compiler.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1072	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	f2259737b967bbe88fc74916f319c61a.exe
Token: SeDebugPrivilege	1676	app.exe
Token: SeDebugPrivilege	1072	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 1676	2328	f2259737b967bbe88fc74916f319c61a.exe	30
PID 2328 wrote to memory of 1676	2328	f2259737b967bbe88fc74916f319c61a.exe	30
PID 2328 wrote to memory of 1676	2328	f2259737b967bbe88fc74916f319c61a.exe	30
PID 2328 wrote to memory of 1676	2328	f2259737b967bbe88fc74916f319c61a.exe	30
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1676 wrote to memory of 1072	1676	app.exe	32
PID 1072 wrote to memory of 2220	1072	aspnet_compiler.exe	33
PID 1072 wrote to memory of 2220	1072	aspnet_compiler.exe	33
PID 1072 wrote to memory of 2220	1072	aspnet_compiler.exe	33
PID 1072 wrote to memory of 2220	1072	aspnet_compiler.exe	33

C:\Users\Admin\AppData\Local\Temp\f2259737b967bbe88fc74916f319c61a.exe
"C:\Users\Admin\AppData\Local\Temp\f2259737b967bbe88fc74916f319c61a.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Roaming\app.exe
  "C:\Users\Admin\AppData\Roaming\app.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1676
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1072
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7281.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2220

Network

DNS

www.microsoft.com

app.exe

Remote address:

8.8.8.8:53

Request

www.microsoft.com

IN A

Response

www.microsoft.com

IN CNAME

www.microsoft.com-c-3.edgekey.net

www.microsoft.com-c-3.edgekey.net

IN CNAME

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

www.microsoft.com-c-3.edgekey.net.globalredir.akadns.net

IN CNAME

e13678.dscb.akamaiedge.net

e13678.dscb.akamaiedge.net

IN A

23.192.18.101
GET

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

Remote address:

23.192.18.101:80

Request

GET /pkiops/crl/MicCodSigPCA2011_2011-07-08.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Mon, 03 Jun 2024 21:25:24 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: www.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 1078
Content-Type: application/octet-stream
Content-MD5: HqJzZuA065RHozzmOcAUiQ==
Last-Modified: Tue, 14 Jan 2025 20:41:31 GMT
ETag: 0x8DD34DBD43549F4
x-ms-request-id: 90d94cda-601e-004e-55c9-667962000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Sat, 22 Mar 2025 06:38:42 GMT
Connection: keep-alive
TLS_version: UNKNOWN
ms-cv: CASMicrosoftCVedb913ab.0
ms-cv-esi: CASMicrosoftCVedb913ab.0
X-RTag: RT
DNS

crl.microsoft.com

Remote address:

8.8.8.8:53

Request

crl.microsoft.com

IN A

Response

crl.microsoft.com

IN CNAME

crl.www.ms.akadns.net

crl.www.ms.akadns.net

IN CNAME

a1363.dscg.akamai.net

a1363.dscg.akamai.net

IN A

2.19.252.143

a1363.dscg.akamai.net

IN A

2.19.252.157
GET

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

Remote address:

2.19.252.143:80

Request

GET /pki/crl/products/MicRooCerAut2011_2011_03_22.crl HTTP/1.1
Connection: Keep-Alive
Accept: */*
If-Modified-Since: Thu, 11 Jul 2024 01:45:51 GMT
User-Agent: Microsoft-CryptoAPI/6.1
Host: crl.microsoft.com

Response

HTTP/1.1 200 OK

Content-Length: 825
Content-Type: application/octet-stream
Content-MD5: O14L1mQEVqdJ2RVebBNXJw==
Last-Modified: Wed, 26 Feb 2025 21:48:51 GMT
ETag: 0x8DD56AF5BD2A499
Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0
x-ms-request-id: 47bdeae0-d01e-0029-409a-88699e000000
x-ms-version: 2009-09-19
x-ms-lease-status: unlocked
x-ms-blob-type: BlockBlob
Date: Sat, 22 Mar 2025 06:38:42 GMT
Connection: keep-alive

23.192.18.101:80

http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

http

393 B
1.7kB
4
4

HTTP Request

GET http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl

HTTP Response

200
2.19.252.143:80

http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

http

451 B
2.7kB
5
4

HTTP Request

GET http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

HTTP Response

200
91.236.116.142:5888

aspnet_compiler.exe

152 B
3
91.236.116.142:5888

aspnet_compiler.exe

152 B
3
91.236.116.142:5888

aspnet_compiler.exe

152 B
3
91.236.116.142:5888

aspnet_compiler.exe

152 B
3

8.8.8.8:53

www.microsoft.com

dns

app.exe

63 B
230 B
1
1

DNS Request

www.microsoft.com

DNS Response

23.192.18.101
8.8.8.8:53

crl.microsoft.com

dns

63 B
162 B
1
1

DNS Request

crl.microsoft.com

DNS Response

2.19.252.143

2.19.252.157

MITRE ATT&CK Enterprise v15

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
b81f473c0c59b47638ae052feb200e17

SHA1
257152dac2f6c6ab0259a6becee9e37361e516d6

SHA256
c6d7c9aa8e29ae7a0f33616283462dfe2997fd237111ab138827fbf232635c62

SHA512
c50488285b97515ab52f789d1b581ce6f00495d926422c14a94c5a82348cee7127a49b2b870c3185b043b0144841ade514ba05a686c907f6c1ed057d695369c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabA860.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7281.tmp

Filesize
1KB

MD5
d81eb43d26d4511c44151cba2eb45983

SHA1
135c98e039c6ab35d4e9564f15f9c56dc9dbeb9a

SHA256
a72a8f6434d6b0fb904db5adc8cab891d12c53b4ac1435dfd13df51f84a2d4d0

SHA512
b5895c19159d23a8fa312967e47d0855ac6f8f314f8931f54469b0c0079a22e9e00a5eaf6729761f74d54e111454d49813e658243e920a9c3434a5576cdda721

Download Submit
\Users\Admin\AppData\Roaming\app.exe

Filesize
920KB

MD5
48a244f299f720f0559a0c3a54f18506

SHA1
53dfb58ddb0c7a668321e5aaf0fd0631bb902752

SHA256
0f74f15a37da31a1bf653246d7dd8b15bb9512619a7981b9c83deb5b1c9c3c66

SHA512
49078e212d514ea47b920f1c304b47cb21889fd9639c444439cc9bb79994b91a53f1384c2b1f27ade357a3a76d1303f4369e0de09016a7b139efb5c1f4fdb14e

Download Submit
memory/1072-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1072-53-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-49-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-51-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-55-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1072-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1676-46-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/1676-45-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/1676-47-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/1676-34-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/1676-64-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/1676-33-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-0-0x0000000074091000-0x0000000074092000-memory.dmp

Filesize
4KB

Download
memory/2328-12-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-14-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-32-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-13-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-11-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download
memory/2328-10-0x0000000074090000-0x000000007463B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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