njrat | bfa74e548efbc9dda9420f88bb84f6f23c034399a16df9093b6a27e33621e44b

General

Target
b93287f2b98af1aefebef7a4b46a689c.exe
Size 43KB
Sample220107-bkh6lsbga7
SHA256 bfa74e548efbc9dda9420f88bb84f6f23c034399a16df9093b6a27e33621e44b
MD5 b93287f2b98af1aefebef7a4b46a689c
SHA1 1329369d122864910f735aa6b1740e85516806c1
SHA512 7fe3185f2c9f0b37f69f780fecb0ff8240116267249212b39371d4966453c6cd018f43b8690c06e5f3beb79a1a2103625e6bd408b284a066eef36c4d5111f067
MD5 SHA1 SHA512

Score

10^/10

njrat hacked persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

6.tcp.ngrok.io:15544

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
672	dllhost.exe
1116	Server.exe
368	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java Update.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java Update.exe	dllhost.exe

Loads dropped DLL 1 IoCs

pid	Process
1460	b93287f2b98af1aefebef7a4b46a689c.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.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 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
836	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1460	b93287f2b98af1aefebef7a4b46a689c.exe
672	dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe
Token: 33	672	dllhost.exe
Token: SeIncBasePriorityPrivilege	672	dllhost.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 672	1460	b93287f2b98af1aefebef7a4b46a689c.exe	27
PID 1460 wrote to memory of 672	1460	b93287f2b98af1aefebef7a4b46a689c.exe	27
PID 1460 wrote to memory of 672	1460	b93287f2b98af1aefebef7a4b46a689c.exe	27
PID 1460 wrote to memory of 672	1460	b93287f2b98af1aefebef7a4b46a689c.exe	27
PID 672 wrote to memory of 836	672	dllhost.exe	28
PID 672 wrote to memory of 836	672	dllhost.exe	28
PID 672 wrote to memory of 836	672	dllhost.exe	28
PID 672 wrote to memory of 836	672	dllhost.exe	28
PID 1836 wrote to memory of 1116	1836	taskeng.exe	32
PID 1836 wrote to memory of 1116	1836	taskeng.exe	32
PID 1836 wrote to memory of 1116	1836	taskeng.exe	32
PID 1836 wrote to memory of 1116	1836	taskeng.exe	32
PID 1836 wrote to memory of 368	1836	taskeng.exe	35
PID 1836 wrote to memory of 368	1836	taskeng.exe	35
PID 1836 wrote to memory of 368	1836	taskeng.exe	35
PID 1836 wrote to memory of 368	1836	taskeng.exe	35

C:\Users\Admin\AppData\Local\Temp\b93287f2b98af1aefebef7a4b46a689c.exe
"C:\Users\Admin\AppData\Local\Temp\b93287f2b98af1aefebef7a4b46a689c.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:672
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - Creates scheduled task(s)
    PID:836

C:\Windows\system32\taskeng.exe
taskeng.exe {EBD0E030-DFDB-4F03-887C-5311A544412F} S-1-5-21-3846991908-3261386348-1409841751-1000:VQVVOAJK\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:1116
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:368