njrat | e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893

General

Target

e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe
Size

48KB
MD5

8f1f6fe84252422b32490de26941667d
SHA1

aefdf7afc7f0127db015e9c5a5fba32764dcb65f
SHA256

e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893
SHA512

82449e469044f4d82740dd803519444d064238f1d22af7c736333c8093268222e1831baf5314610a92fe95b727573be0f66a07abe142173c61511019e08092bd
SSDEEP

768:yqzAfdxZjz9oT1oOL0ysBj27/6nnnnnR5D70GlafPsA2XPa:BzAfdxZjz9oRoM0Jj27/6nnnnnR5DNGv

Score

10^/10

njrat trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

Tempserver.exe

pid process

1612 Tempserver.exe

pid	process
1612	Tempserver.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

Processes:

e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

dw20.exe

description	pid	process
Token: SeRestorePrivilege	1884	dw20.exe
Token: SeBackupPrivilege	1884	dw20.exe
Token: SeBackupPrivilege	1884	dw20.exe
Token: SeBackupPrivilege	1884	dw20.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exeTempserver.exe

description	pid	process	target process
PID 4980 wrote to memory of 1612	4980	e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe	Tempserver.exe
PID 4980 wrote to memory of 1612	4980	e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe	Tempserver.exe
PID 4980 wrote to memory of 1612	4980	e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe	Tempserver.exe
PID 1612 wrote to memory of 1884	1612	Tempserver.exe	dw20.exe
PID 1612 wrote to memory of 1884	1612	Tempserver.exe	dw20.exe
PID 1612 wrote to memory of 1884	1612	Tempserver.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe
"C:\Users\Admin\AppData\Local\Temp\e391b549cc575755655802d16691c97d32d21519259300193ae41b14d2053893.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Users\Admin\AppData\Local\Tempserver.exe
  "C:\Users\Admin\AppData\Local\Tempserver.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 800
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Tempserver.exe

Filesize
27KB

MD5
c32da36c0e20bbad858843583913cee0

SHA1
e21483236d5f4a8df0f9f94eeecbc79b0838204b

SHA256
bf14c34ac9e91ee9423dd622228806d18f8e0e2a4843ecc97711aab7771b483b

SHA512
18457cc75078ca0637b234a35fe9719cb72da307b68a1a587f5998d0e32ed5ff08676eaa72b28958c1d4159e9e4bd371962af14d1f3ea28b1fcc3e074bba4ced

Download Submit
C:\Users\Admin\AppData\Local\Tempserver.exe

Filesize
27KB

MD5
c32da36c0e20bbad858843583913cee0

SHA1
e21483236d5f4a8df0f9f94eeecbc79b0838204b

SHA256
bf14c34ac9e91ee9423dd622228806d18f8e0e2a4843ecc97711aab7771b483b

SHA512
18457cc75078ca0637b234a35fe9719cb72da307b68a1a587f5998d0e32ed5ff08676eaa72b28958c1d4159e9e4bd371962af14d1f3ea28b1fcc3e074bba4ced

Download Submit
memory/1612-138-0x0000000000000000-mapping.dmp

Download
memory/1612-142-0x000000006FC90000-0x0000000070241000-memory.dmp

Filesize
5.7MB

Download
memory/1612-143-0x000000006FC90000-0x0000000070241000-memory.dmp

Filesize
5.7MB

Download
memory/1884-141-0x0000000000000000-mapping.dmp

Download
memory/4980-132-0x0000000000BB0000-0x0000000000BC4000-memory.dmp

Filesize
80KB

Download
memory/4980-133-0x00000000055B0000-0x000000000564C000-memory.dmp

Filesize
624KB

Download
memory/4980-134-0x0000000005C00000-0x00000000061A4000-memory.dmp

Filesize
5.6MB

Download
memory/4980-135-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/4980-136-0x0000000005580000-0x000000000558A000-memory.dmp

Filesize
40KB

Download
memory/4980-137-0x0000000005840000-0x0000000005896000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads