njrat | 0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8

Analysis

max time kernel
189s
max time network
198s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 01:53

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General

Target

0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe
Size

423KB
MD5

046a056b337e2c1ac546326dc3185347
SHA1

b17f1d58deac0ffacc916174e6387acf2956e990
SHA256

0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8
SHA512

850a78935e1ee440ea116e544f870e99bd74bef84d9a65c7df7a2c0d62ab108978cf03a158464ff9a1fdde0f2f9c7e9a39905bec8827138287b6c3683583b7a5
SSDEEP

3072:t4bhYmC/3mHkgFh782f/Bh6mUMDc0whM27TZob3ae6nailN+fO:t4i3d2NqfPysajQ7

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
3672	system32.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3404	netsh.exe

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5e3d9c44250db4c1b2d86e9ad682c012.exe	system32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5e3d9c44250db4c1b2d86e9ad682c012.exe	system32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5e3d9c44250db4c1b2d86e9ad682c012 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system32.exe\" .."	system32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5e3d9c44250db4c1b2d86e9ad682c012 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system32.exe\" .."	system32.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe
Token: 33	3672	system32.exe
Token: SeIncBasePriorityPrivilege	3672	system32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 3672	1992	0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe	83
PID 1992 wrote to memory of 3672	1992	0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe	83
PID 3672 wrote to memory of 3404	3672	system32.exe	84
PID 3672 wrote to memory of 3404	3672	system32.exe	84

C:\Users\Admin\AppData\Local\Temp\0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe
"C:\Users\Admin\AppData\Local\Temp\0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\system32.exe
  "C:\Users\Admin\AppData\Local\Temp\system32.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\system32.exe" "system32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3404

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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

C:\Users\Admin\AppData\Local\Temp\system32.exe

Filesize
423KB

MD5
046a056b337e2c1ac546326dc3185347

SHA1
b17f1d58deac0ffacc916174e6387acf2956e990

SHA256
0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8

SHA512
850a78935e1ee440ea116e544f870e99bd74bef84d9a65c7df7a2c0d62ab108978cf03a158464ff9a1fdde0f2f9c7e9a39905bec8827138287b6c3683583b7a5

Download Submit
C:\Users\Admin\AppData\Local\Temp\system32.exe

Filesize
423KB

MD5
046a056b337e2c1ac546326dc3185347

SHA1
b17f1d58deac0ffacc916174e6387acf2956e990

SHA256
0434c077bcf42d35cd75aaaea8fd22f355b5d8c4514131d78775dade74a5a6a8

SHA512
850a78935e1ee440ea116e544f870e99bd74bef84d9a65c7df7a2c0d62ab108978cf03a158464ff9a1fdde0f2f9c7e9a39905bec8827138287b6c3683583b7a5

Download Submit
memory/1992-132-0x00007FFA18E90000-0x00007FFA198C6000-memory.dmp

Filesize
10.2MB

Download
memory/3672-136-0x00007FFA18E90000-0x00007FFA198C6000-memory.dmp

Filesize
10.2MB

Download