nanocore | 3ffba67572a1f48765eb9f038ef74d34a1c0546cc95388dd2432c3f9ceba429e

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2024, 07:20

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General

Target
cd74673783e32ef84599498080dbe6d9.exe
Size 1.0MB
Sample240316-h54rdaed8v
SHA256 3ffba67572a1f48765eb9f038ef74d34a1c0546cc95388dd2432c3f9ceba429e
MD5 cd74673783e32ef84599498080dbe6d9
SHA1 612786d7bf921f1d4c99577fcf5b5e422b9e25f0
SHA512 7334cda1b7afd4691cbcf20062b54da1c131cf5aee0b33fd3861f32cfb9ee6d31e77ef665a2019b9ae96b398d46910e81f1b27502fcab2605d100496c3d9d20a
SSDEEP 24576:rAOcZAhh3iCywrS1PzIqmqq3XFQYcqa6lCKCZ/:tdy/zjbWX6KtM
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion 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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	cd74673783e32ef84599498080dbe6d9.exe

Executes dropped EXE 2 IoCs

pid	Process
364	mtcxfokr.pif
3512	RegSvcs.exe

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\\Roaming\\29986083\\mtcxfokr.pif C:\\Users\\Admin\\AppData\\Roaming\\29986083\\fbpmfhh.crj"	mtcxfokr.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\29986083\\Update.vbs"	mtcxfokr.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\IMAP Service = "C:\\Program Files (x86)\\IMAP Service\\imapsv.exe"	RegSvcs.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	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 364 set thread context of 3512	364	mtcxfokr.pif	96

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\IMAP Service\imapsv.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\IMAP Service\imapsv.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
4720	schtasks.exe
1052	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe
3512	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3512	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3512	RegSvcs.exe
Token: SeDebugPrivilege	3512	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 364	4616	cd74673783e32ef84599498080dbe6d9.exe	92
PID 4616 wrote to memory of 364	4616	cd74673783e32ef84599498080dbe6d9.exe	92
PID 4616 wrote to memory of 364	4616	cd74673783e32ef84599498080dbe6d9.exe	92
PID 364 wrote to memory of 3512	364	mtcxfokr.pif	96
PID 364 wrote to memory of 3512	364	mtcxfokr.pif	96
PID 364 wrote to memory of 3512	364	mtcxfokr.pif	96
PID 364 wrote to memory of 3512	364	mtcxfokr.pif	96
PID 364 wrote to memory of 3512	364	mtcxfokr.pif	96
PID 3512 wrote to memory of 4720	3512	RegSvcs.exe	100
PID 3512 wrote to memory of 4720	3512	RegSvcs.exe	100
PID 3512 wrote to memory of 4720	3512	RegSvcs.exe	100
PID 3512 wrote to memory of 1052	3512	RegSvcs.exe	102
PID 3512 wrote to memory of 1052	3512	RegSvcs.exe	102
PID 3512 wrote to memory of 1052	3512	RegSvcs.exe	102

C:\Users\Admin\AppData\Local\Temp\cd74673783e32ef84599498080dbe6d9.exe
"C:\Users\Admin\AppData\Local\Temp\cd74673783e32ef84599498080dbe6d9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Roaming\29986083\mtcxfokr.pif
  "C:\Users\Admin\AppData\Roaming\29986083\mtcxfokr.pif" fbpmfhh.crj
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:364
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3512
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "IMAP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5091.tmp"
      4⤵
      Creates scheduled task(s)
      PID:4720
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "IMAP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp510F.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1052

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

RegSvcs.exe

Path C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Size 44KB
SHA256 2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
MD5 9d352bc46709f0cb5ec974633a0c3c94
SHA1 1969771b2f022f9a86d77ac4d4d239becdf08d07
SHA512 13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b
SSDEEP 768:4BbSoy+SdIBf0k2dsjYg6Iq8S1GYqWH8BR:noOIBf0ddsjY/ZGyc7
MD5 SHA1 SHA512 SSDEEP

Submit Download

tmp5091.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5091.tmp
Size 1KB
SHA256 8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
MD5 95aceabc58acad5d73372b0966ee1b35
SHA1 2293b7ad4793cf574b1a5220e85f329b5601040a
SHA512 00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74
MD5 SHA1 SHA512

Submit Download

tmp510F.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp510F.tmp
Size 1KB
SHA256 b3689f65cd1048f673cda43b0f93ffddb45bc67da94a62335b7c75ba0f0b2852
MD5 266ebd097e1267e63a5abfc1dededae8
SHA1 b619bdaa65cbb17c86da3744e566e6a66c7057b4
SHA512 4db2526f588777bfaf8b7d7799d19e5e384f0ed1fff1905196277383378a98e73b7952d4bccf22cd92c53b5d7f9c9057f896a773a58b1908fe4a41aadae047bd
MD5 SHA1 SHA512

Submit Download

fbpmfhh.crj

Path C:\Users\Admin\AppData\Roaming\29986083\fbpmfhh.crj
Size 66.9MB
SHA256 a062546ee6bc151f1b5156c39205c7b52c0bf053dd2b2ffdbb38a64bf474127b
MD5 83026ff340509ac8d07d23a35b1674b0
SHA1 c740256d2b18862b5a1696338937d1199fc3b6c3
SHA512 177b40d97662817e551adf7286d99ec04958531187b3e709ab4ada5f78334538f49ba8444b4c2a3847a4f469716a43eb0e815b7e3359f36c1985042af210e779
SSDEEP 49152:13jTWQivnynPdCSo+K74sNJuZxFg/MHqdnbjmoePDPIjwmB5YhKt8JedZIELIMuD:b
MD5 SHA1 SHA512 SSDEEP

Submit Download

krmgtuwoiu.dll

Path C:\Users\Admin\AppData\Roaming\29986083\krmgtuwoiu.dll
Size 469KB
SHA256 4334645e2da2776ecc0d9ec7c27180e7752cb21746c7d8f7b9cd38ffb4d2f3ef
MD5 ccd68ca737155fc6fb16ac2acc63337f
SHA1 65be976793f3a71658c79d38ff301c5c36a9acf1
SHA512 16747acbe59650f9fdd55272169ced8bb7aba221ee9ee83e99ebae6ed630db4abd84d504c06f3f18f503abbe7b1a209d03af0923f22a525b13edff2bdc32f445
SSDEEP 3072:118UOtHuO3QoXsDRntIVLXAR+J+ROC3YUuL1WDbtE5LTb4bAbxpbin4m/D8BxWDK:CtdsAZXA2MdWh8E5LPxxpy4m5DOnNlsQ
MD5 SHA1 SHA512 SSDEEP

Submit Download

mtcxfokr.pif

Path C:\Users\Admin\AppData\Roaming\29986083\mtcxfokr.pif
Size 646KB
SHA256 07e5f6d7ec7ccbc3d742658e9161d799934c6f7f6a3ebf560f361b4ee1730b6a
MD5 cdbb08d4234736c4a052dc3f181e66f2
SHA1 6801a805b6dcb760e8bf399a7d3ad0489fec7bfb
SHA512 1ebd1a546e64d4b36d4f143ff7211d953f8db8e74c739db5e9c0939a6eb010a461fd1368f8a7813a8a2da804de6993010075ac21e4917d74d3f9394eaebafdfb
SSDEEP 12288:CBzZm7d9AZAYJVB7ii/XAvKxRJBnwvogSJ4M4G4aI55DGDt2:8cneJVBvXAvwRJdwvZ5aI55DGR2
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3512-82-0x0000000006040000-0x000000000604A000-memory.dmp

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memory/3512-73-0x0000000001200000-0x00000000018BF000-memory.dmp

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memory/3512-79-0x00000000060B0000-0x0000000006142000-memory.dmp

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memory/3512-80-0x0000000006150000-0x00000000061EC000-memory.dmp

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memory/3512-77-0x0000000073D40000-0x00000000744F0000-memory.dmp

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memory/3512-81-0x0000000005FD0000-0x0000000005FE0000-memory.dmp

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memory/3512-76-0x0000000001200000-0x000000000123A000-memory.dmp

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memory/3512-78-0x0000000006660000-0x0000000006C04000-memory.dmp

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memory/3512-90-0x0000000006090000-0x000000000609A000-memory.dmp

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memory/3512-91-0x0000000006360000-0x000000000636C000-memory.dmp

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memory/3512-92-0x0000000006370000-0x000000000638E000-memory.dmp

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memory/3512-93-0x0000000007170000-0x000000000717A000-memory.dmp

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memory/3512-94-0x0000000073D40000-0x00000000744F0000-memory.dmp

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memory/3512-95-0x0000000005FD0000-0x0000000005FE0000-memory.dmp

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