njrat | f224e28066ac3cb24754bf423b368d28b720dc6889f86d2ce21df79f33982e5f

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
16/10/2023, 18:01

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General

Target

548A4036ED72D3479BA73BB16B540198.exe
Size

1.1MB
MD5

548a4036ed72d3479ba73bb16b540198
SHA1

2f13d78e0a284eee8673aff586582050f72e4f82
SHA256

f224e28066ac3cb24754bf423b368d28b720dc6889f86d2ce21df79f33982e5f
SHA512

97b72f7186233db4038caef8f4714fdcdec6da17d4c195d791381163dcd86f0b23c9b0c4dec39c1f0f2616615a77f53f18987b7faac8947283fe0b3fa97e6a9a
SSDEEP

24576:7gc2ZZ58NY+7pxrdVzZEUbIBd6U1EtuhgrSiDj2ni:7hFNY+7LdHPI91EagOi

Score

10^/10

njrat evasion trojan

Malware Config

Extracted

Family

njrat

hakim32.ddns.net:2000

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Disables Task Manager via registry modification
evasion

Modifies Windows Firewall 1 TTPs 3 IoCs

evasion

Windows Service

T1543.003

pid	Process
3856	netsh.exe
5016	netsh.exe
3500	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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	548A4036ED72D3479BA73BB16B540198.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\beeb0f76ea209c7775b2f9385beb7b67Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\beeb0f76ea209c7775b2f9385beb7b67Windows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
4832	server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	F:\autorun.inf	server.exe
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 18 IoCs

pid	Process
1740	548A4036ED72D3479BA73BB16B540198.exe
1740	548A4036ED72D3479BA73BB16B540198.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1740	548A4036ED72D3479BA73BB16B540198.exe
1740	548A4036ED72D3479BA73BB16B540198.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe
4832	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4832	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe
Token: 33	4832	server.exe
Token: SeIncBasePriorityPrivilege	4832	server.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1740	548A4036ED72D3479BA73BB16B540198.exe
4832	server.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 4832	1740	548A4036ED72D3479BA73BB16B540198.exe	83
PID 1740 wrote to memory of 4832	1740	548A4036ED72D3479BA73BB16B540198.exe	83
PID 1740 wrote to memory of 4832	1740	548A4036ED72D3479BA73BB16B540198.exe	83
PID 4832 wrote to memory of 3856	4832	server.exe	84
PID 4832 wrote to memory of 3856	4832	server.exe	84
PID 4832 wrote to memory of 3856	4832	server.exe	84
PID 4832 wrote to memory of 3500	4832	server.exe	89
PID 4832 wrote to memory of 3500	4832	server.exe	89
PID 4832 wrote to memory of 3500	4832	server.exe	89
PID 4832 wrote to memory of 5016	4832	server.exe	88
PID 4832 wrote to memory of 5016	4832	server.exe	88
PID 4832 wrote to memory of 5016	4832	server.exe	88

C:\Users\Admin\AppData\Local\Temp\548A4036ED72D3479BA73BB16B540198.exe
"C:\Users\Admin\AppData\Local\Temp\548A4036ED72D3479BA73BB16B540198.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3856
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:5016
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    PID:3500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1.1MB

MD5
548a4036ed72d3479ba73bb16b540198

SHA1
2f13d78e0a284eee8673aff586582050f72e4f82

SHA256
f224e28066ac3cb24754bf423b368d28b720dc6889f86d2ce21df79f33982e5f

SHA512
97b72f7186233db4038caef8f4714fdcdec6da17d4c195d791381163dcd86f0b23c9b0c4dec39c1f0f2616615a77f53f18987b7faac8947283fe0b3fa97e6a9a

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

Filesize
1.1MB

MD5
548a4036ed72d3479ba73bb16b540198

SHA1
2f13d78e0a284eee8673aff586582050f72e4f82

SHA256
f224e28066ac3cb24754bf423b368d28b720dc6889f86d2ce21df79f33982e5f

SHA512
97b72f7186233db4038caef8f4714fdcdec6da17d4c195d791381163dcd86f0b23c9b0c4dec39c1f0f2616615a77f53f18987b7faac8947283fe0b3fa97e6a9a

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

Filesize
1.1MB

MD5
548a4036ed72d3479ba73bb16b540198

SHA1
2f13d78e0a284eee8673aff586582050f72e4f82

SHA256
f224e28066ac3cb24754bf423b368d28b720dc6889f86d2ce21df79f33982e5f

SHA512
97b72f7186233db4038caef8f4714fdcdec6da17d4c195d791381163dcd86f0b23c9b0c4dec39c1f0f2616615a77f53f18987b7faac8947283fe0b3fa97e6a9a

Download Submit
C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
02b81b0cbe1faaa1fa62d5fc876ab443

SHA1
d473cfe21fb1f188689415b0bdd239688f8fddd9

SHA256
e7e9e2c247bc872bacce77661c78f001a17d70ee3130a9016a5818da9da00cdb

SHA512
592ab5b200d4c560951cb70288dc1b7a562f0cbfaee01ce03076b6934d537b88575c2e1e0fedcc05db95e6c224ca739923e7d74f9165e683f3fbad7bbf641784

Download Submit
memory/1740-16-0x0000000000E40000-0x00000000011BE000-memory.dmp

Filesize
3.5MB

Download
memory/1740-3-0x0000000003ED0000-0x0000000003EE0000-memory.dmp

Filesize
64KB

Download
memory/1740-1-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1740-2-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/1740-0-0x0000000000E40000-0x00000000011BE000-memory.dmp

Filesize
3.5MB

Download
memory/1740-18-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-20-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-19-0x00000000031C0000-0x00000000031D0000-memory.dmp

Filesize
64KB

Download
memory/4832-17-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-13-0x00000000000C0000-0x000000000043E000-memory.dmp

Filesize
3.5MB

Download
memory/4832-36-0x00000000000C0000-0x000000000043E000-memory.dmp

Filesize
3.5MB

Download
memory/4832-37-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-38-0x00000000031C0000-0x00000000031D0000-memory.dmp

Filesize
64KB

Download
memory/4832-39-0x0000000074D40000-0x00000000752F1000-memory.dmp

Filesize
5.7MB

Download