nanocore | 691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/01/2025, 04:24

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General

Target

691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
Size

1.3MB
MD5

eda1f9271a18bd14c8e3ccc575ef8da0
SHA1

704f796328f013f1ac9d2f82104c254bc96b8130
SHA256

691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8
SHA512

50874d1629809f4e1c3ebf04ddd5303f21ec30e3f4782c398f369cbc048c7fc63af23e59497815325619a650d724270d498ffbb8feb0a1f11055ab603f8073b1
SSDEEP

24576:gAHnh+eWsN3skA4RV1Hom2KXMmHaH04xmQPD5U:Xh+ZkldoPK8YafxU

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

ponnyhurb.duckdns.org:6290

Mutex

b3d970d4-fe05-46df-a7e4-b0e6b6eee3ae

Attributes

activate_away_mode
false
backup_connection_host
ponnyhurb.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-02-04T04:37:36.694334036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
3992
connection_port
6290
default_group
ponnyhurb.duckdns.org
enable_debug_mode
true
gc_threshold
1.0485783e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
b3d970d4-fe05-46df-a7e4-b0e6b6eee3ae
mutex_timeout
4963
prevent_system_sleep
false
primary_connection_host
ponnyhurb.duckdns.org
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
Nanocore family
nanocore

Executes dropped EXE 2 IoCs

pid	Process
1036	convertvhd.exe
1596	convertvhd.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\IMAP Monitor = "C:\\Program Files (x86)\\IMAP Monitor\\imapmon.exe"	RegAsm.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	RegAsm.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0005000000019aec-22.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 1036 set thread context of 1764	1036	convertvhd.exe	40
PID 1596 set thread context of 840	1596	convertvhd.exe	45

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	RegAsm.exe
File opened for modification	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	RegAsm.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 11 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	RegAsm.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	convertvhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	convertvhd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1908	schtasks.exe
2764	schtasks.exe
2812	schtasks.exe
2588	schtasks.exe
1944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2648	RegAsm.exe
2648	RegAsm.exe
2648	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2648	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	RegAsm.exe

Suspicious use of WriteProcessMemory 55 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2848 wrote to memory of 2648	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	31
PID 2648 wrote to memory of 2764	2648	RegAsm.exe	32
PID 2648 wrote to memory of 2764	2648	RegAsm.exe	32
PID 2648 wrote to memory of 2764	2648	RegAsm.exe	32
PID 2648 wrote to memory of 2764	2648	RegAsm.exe	32
PID 2648 wrote to memory of 2812	2648	RegAsm.exe	34
PID 2648 wrote to memory of 2812	2648	RegAsm.exe	34
PID 2648 wrote to memory of 2812	2648	RegAsm.exe	34
PID 2648 wrote to memory of 2812	2648	RegAsm.exe	34
PID 2848 wrote to memory of 2588	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	36
PID 2848 wrote to memory of 2588	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	36
PID 2848 wrote to memory of 2588	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	36
PID 2848 wrote to memory of 2588	2848	691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe	36
PID 1584 wrote to memory of 1036	1584	taskeng.exe	39
PID 1584 wrote to memory of 1036	1584	taskeng.exe	39
PID 1584 wrote to memory of 1036	1584	taskeng.exe	39
PID 1584 wrote to memory of 1036	1584	taskeng.exe	39
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1764	1036	convertvhd.exe	40
PID 1036 wrote to memory of 1944	1036	convertvhd.exe	42
PID 1036 wrote to memory of 1944	1036	convertvhd.exe	42
PID 1036 wrote to memory of 1944	1036	convertvhd.exe	42
PID 1036 wrote to memory of 1944	1036	convertvhd.exe	42
PID 1584 wrote to memory of 1596	1584	taskeng.exe	44
PID 1584 wrote to memory of 1596	1584	taskeng.exe	44
PID 1584 wrote to memory of 1596	1584	taskeng.exe	44
PID 1584 wrote to memory of 1596	1584	taskeng.exe	44
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 840	1596	convertvhd.exe	45
PID 1596 wrote to memory of 1908	1596	convertvhd.exe	46
PID 1596 wrote to memory of 1908	1596	convertvhd.exe	46
PID 1596 wrote to memory of 1908	1596	convertvhd.exe	46
PID 1596 wrote to memory of 1908	1596	convertvhd.exe	46

C:\Users\Admin\AppData\Local\Temp\691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe
"C:\Users\Admin\AppData\Local\Temp\691c9052e43556c9e4fbbec1db2f27bb448bdc3ee6492a648ff0a5b53d35b5e8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:2648
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "IMAP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDF09.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2764
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "IMAP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDF87.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2812
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2588

C:\Windows\system32\taskeng.exe
taskeng.exe {1F0534C8-4E2F-4C64-A977-44271DD66E69} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\CompatTelRunner\convertvhd.exe
  C:\Users\Admin\CompatTelRunner\convertvhd.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1764
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1944
- C:\Users\Admin\CompatTelRunner\convertvhd.exe
  C:\Users\Admin\CompatTelRunner\convertvhd.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:840
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn chglogon /tr "C:\Users\Admin\CompatTelRunner\convertvhd.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1908

Network

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\Local\Temp\tmpDF09.tmp

Filesize
1KB

MD5
c6f0625bf4c1cdfb699980c9243d3b22

SHA1
43de1fe580576935516327f17b5da0c656c72851

SHA256
8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

SHA512
9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDF87.tmp

Filesize
1KB

MD5
d2d6911d94b06e405e7687a2437eafec

SHA1
9f28f9e7d8d5179d44ddaa6ca266984ed7521dea

SHA256
2dc87169ad53fbdd7abb08f49777cb8fb05adbff4e6f6616b4c89942af8cad0f

SHA512
b5983de701ff98e944283a25f1770c1e792d52148dc1671f1d19203f8b9d10b056abcf79a17ca536a5f88ccf52f6445d8f3e75fce628666640ad8bad697dcfd1

Download Submit
C:\Users\Admin\CompatTelRunner\convertvhd.exe

Filesize
1.3MB

MD5
5a42e8c0528f065e8b2251641c446212

SHA1
69d26275510ae204c485651e4886cf39080451cd

SHA256
05d8d0918de543911f1acbaa0c13270b03eb248c62781e8b99c32cb44c1db756

SHA512
68411d251ecd65b7aa32fac88bbcb00955056768eac6947398337a8f5c3192b4eac2e161a3546ccb237ad8c13054b0c3e796aceebd33b1ea45c5b87a73d7c9da

Download Submit
memory/2648-10-0x0000000073F72000-0x0000000073F74000-memory.dmp

Filesize
8KB

Download
memory/2648-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2648-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-18-0x0000000073F70000-0x000000007451B000-memory.dmp

Filesize
5.7MB

Download
memory/2648-19-0x0000000073F72000-0x0000000073F74000-memory.dmp

Filesize
8KB

Download
memory/2648-20-0x0000000073F70000-0x000000007451B000-memory.dmp

Filesize
5.7MB

Download
memory/2648-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2848-0-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download