nanocore | 0e6a5a8e25fbcd47b9e4f7a7657523554e4461e5a314ed2b0a32fe7d97d00805

General

Target
BK7489583093410.JPG.scr
Size 1.1MB
Sample210817-6dvlt9xt7s
SHA256 0e6a5a8e25fbcd47b9e4f7a7657523554e4461e5a314ed2b0a32fe7d97d00805
MD5 09407691eea18679315764d36b68ca7e
SHA1 42aff4c36734f2a3b9bac0cf957d73f308a1d3c7
SHA512 148d8fc26370df62745fc46b120082fded83a3a7e3c9c368f75cdf6b4bf45e33b99812f341f7dd66fe2cca07bc3d7f80c4be52b440df0748eb489adbcc3ec350
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

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

Executes dropped EXE 2 IoCs

pid	Process
2788	wdararmv.pif
2324	RegSvcs.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wdararmv.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "c:\\89244951\\wdararmv.pif c:\\89244951\\atotcfer.ebe"	wdararmv.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "c:\\89244951\\Update.vbs"	wdararmv.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Manager = "C:\\Program Files (x86)\\ISS Manager\\issmgr.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 2788 set thread context of 2324	2788	wdararmv.pif	78

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\ISS Manager\issmgr.exe	RegSvcs.exe
File created	C:\Program Files (x86)\ISS Manager\issmgr.exe	RegSvcs.exe

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

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

T1053

pid	Process
3448	schtasks.exe
2132	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2324	RegSvcs.exe
2324	RegSvcs.exe
2324	RegSvcs.exe
2324	RegSvcs.exe
2324	RegSvcs.exe
2324	RegSvcs.exe
2324	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2324	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	RegSvcs.exe
Token: SeDebugPrivilege	2324	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 2788	3924	BK7489583093410.JPG.scr	76
PID 3924 wrote to memory of 2788	3924	BK7489583093410.JPG.scr	76
PID 3924 wrote to memory of 2788	3924	BK7489583093410.JPG.scr	76
PID 2788 wrote to memory of 2324	2788	wdararmv.pif	78
PID 2788 wrote to memory of 2324	2788	wdararmv.pif	78
PID 2788 wrote to memory of 2324	2788	wdararmv.pif	78
PID 2788 wrote to memory of 2324	2788	wdararmv.pif	78
PID 2788 wrote to memory of 2324	2788	wdararmv.pif	78
PID 2324 wrote to memory of 3448	2324	RegSvcs.exe	81
PID 2324 wrote to memory of 3448	2324	RegSvcs.exe	81
PID 2324 wrote to memory of 3448	2324	RegSvcs.exe	81
PID 2324 wrote to memory of 2132	2324	RegSvcs.exe	83
PID 2324 wrote to memory of 2132	2324	RegSvcs.exe	83
PID 2324 wrote to memory of 2132	2324	RegSvcs.exe	83

C:\Users\Admin\AppData\Local\Temp\BK7489583093410.JPG.scr
"C:\Users\Admin\AppData\Local\Temp\BK7489583093410.JPG.scr" /S
1⤵
- Suspicious use of WriteProcessMemory
PID:3924
- C:\89244951\wdararmv.pif
  "C:\89244951\wdararmv.pif" atotcfer.ebe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2788
- - 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:2324
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ISS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4D89.tmp"
      4⤵
      Creates scheduled task(s)
      PID:3448
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ISS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4F5F.tmp"
      4⤵
      Creates scheduled task(s)
      PID:2132

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2324-119-0x0000000000600000-0x0000000000D38000-memory.dmp

Download

memory/2324-126-0x00000000053E0000-0x00000000053E1000-memory.dmp

Download

memory/2324-127-0x0000000005480000-0x0000000005481000-memory.dmp

Download

memory/2324-128-0x0000000005360000-0x0000000005361000-memory.dmp

Download

memory/2324-130-0x00000000053C0000-0x00000000053C1000-memory.dmp

Download

memory/2324-125-0x00000000058E0000-0x00000000058E1000-memory.dmp

Download

memory/2324-134-0x00000000058D0000-0x00000000058D5000-memory.dmp

Download

memory/2324-135-0x0000000006360000-0x0000000006366000-memory.dmp

Download

memory/2324-136-0x0000000006370000-0x0000000006389000-memory.dmp

Download

memory/2324-137-0x00000000063A0000-0x00000000063A3000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads