njrat | 7dd25fd3fbb87266948a407b91285c4b07bb46f9bf26f3c1a7d2a5ed4ce9cd3b

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
04/03/2025, 03:44

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General

Target

Pyslock.exe
Size

21.6MB
MD5

a0ffac14736ead083c36a978369b87ba
SHA1

8da2f697b7b65ebdf21b94c1d1f0185d1d48f3e5
SHA256

7dd25fd3fbb87266948a407b91285c4b07bb46f9bf26f3c1a7d2a5ed4ce9cd3b
SHA512

29c5cc95e51f7ef17b0df944207d6fa3e8d94f9e84bb0b6026d8a7f131e6c7287b78aac18e50f521fd064b2832a64cecc54bce83507d4cd6bd4b718347f78aeb
SSDEEP

393216:k6f15y6xVG+dvbs5u+5vFA3MLwCbe6q5WpsealMvjm3AjjyXHm2dj+sasBC:1FGmsQ+50MLbbe0seeB3AjjF2BksBC

Score

10^/10

njrat xworm mjrm multi defense_evasion discovery persistence privilege_escalation rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

1VeDwfujGeaxOsgJ

Attributes

install_file
USB.exe

aes.plain

Extracted

Family

njrat

Version

im523

Botnet

MjRm MULTI

data-center.gotdns.ch:5552

Mutex

0f11a0ab2753081a6848acab26509810

Attributes

reg_key
0f11a0ab2753081a6848acab26509810
splitter
|'|'|

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015f6a-23.dat	family_xworm
behavioral1/memory/2768-25-0x0000000000D30000-0x0000000000D3E000-memory.dmp	family_xworm

Njrat family
njrat
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
868	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0f11a0ab2753081a6848acab26509810.exe	Host Process for Windows Tasks.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0f11a0ab2753081a6848acab26509810.exe	Host Process for Windows Tasks.exe

Executes dropped EXE 3 IoCs

pid	Process
1676	CaliYox FiveM.exe
2348	Host Process for Windows Tasks.exe
2768	Windows SmartScreen.exe

Loads dropped DLL 4 IoCs

pid	Process
2128	Pyslock.exe
2128	Pyslock.exe
2128	Pyslock.exe
2128	Pyslock.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 64 IoCs

Web Service

T1102

flow	ioc
33	raw.githubusercontent.com
87	raw.githubusercontent.com
132	raw.githubusercontent.com
216	raw.githubusercontent.com
293	raw.githubusercontent.com
47	raw.githubusercontent.com
129	raw.githubusercontent.com
144	raw.githubusercontent.com
271	raw.githubusercontent.com
302	raw.githubusercontent.com
52	raw.githubusercontent.com
4	raw.githubusercontent.com
25	raw.githubusercontent.com
269	raw.githubusercontent.com
12	raw.githubusercontent.com
75	raw.githubusercontent.com
141	raw.githubusercontent.com
151	raw.githubusercontent.com
161	raw.githubusercontent.com
193	raw.githubusercontent.com
221	raw.githubusercontent.com
251	raw.githubusercontent.com
13	raw.githubusercontent.com
49	raw.githubusercontent.com
67	raw.githubusercontent.com
162	raw.githubusercontent.com
163	raw.githubusercontent.com
259	raw.githubusercontent.com
263	raw.githubusercontent.com
281	raw.githubusercontent.com
77	raw.githubusercontent.com
81	raw.githubusercontent.com
159	raw.githubusercontent.com
200	raw.githubusercontent.com
262	raw.githubusercontent.com
294	raw.githubusercontent.com
300	raw.githubusercontent.com
21	raw.githubusercontent.com
243	raw.githubusercontent.com
256	raw.githubusercontent.com
17	raw.githubusercontent.com
45	raw.githubusercontent.com
16	raw.githubusercontent.com
23	raw.githubusercontent.com
287	raw.githubusercontent.com
5	raw.githubusercontent.com
20	raw.githubusercontent.com
66	raw.githubusercontent.com
309	raw.githubusercontent.com
64	raw.githubusercontent.com
147	raw.githubusercontent.com
306	raw.githubusercontent.com
50	raw.githubusercontent.com
105	raw.githubusercontent.com
245	raw.githubusercontent.com
264	raw.githubusercontent.com
93	raw.githubusercontent.com
143	raw.githubusercontent.com
286	raw.githubusercontent.com
291	raw.githubusercontent.com
174	raw.githubusercontent.com
223	raw.githubusercontent.com
189	raw.githubusercontent.com
205	raw.githubusercontent.com

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Pyslock.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Host Process for Windows Tasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	Windows SmartScreen.exe
Token: SeDebugPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe
Token: 33	2348	Host Process for Windows Tasks.exe
Token: SeIncBasePriorityPrivilege	2348	Host Process for Windows Tasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 1676	2128	Pyslock.exe	30
PID 2128 wrote to memory of 1676	2128	Pyslock.exe	30
PID 2128 wrote to memory of 1676	2128	Pyslock.exe	30
PID 2128 wrote to memory of 1676	2128	Pyslock.exe	30
PID 2128 wrote to memory of 2348	2128	Pyslock.exe	32
PID 2128 wrote to memory of 2348	2128	Pyslock.exe	32
PID 2128 wrote to memory of 2348	2128	Pyslock.exe	32
PID 2128 wrote to memory of 2348	2128	Pyslock.exe	32
PID 2128 wrote to memory of 2768	2128	Pyslock.exe	33
PID 2128 wrote to memory of 2768	2128	Pyslock.exe	33
PID 2128 wrote to memory of 2768	2128	Pyslock.exe	33
PID 2128 wrote to memory of 2768	2128	Pyslock.exe	33
PID 2348 wrote to memory of 868	2348	Host Process for Windows Tasks.exe	35
PID 2348 wrote to memory of 868	2348	Host Process for Windows Tasks.exe	35
PID 2348 wrote to memory of 868	2348	Host Process for Windows Tasks.exe	35
PID 2348 wrote to memory of 868	2348	Host Process for Windows Tasks.exe	35

C:\Users\Admin\AppData\Local\Temp\Pyslock.exe
"C:\Users\Admin\AppData\Local\Temp\Pyslock.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Roaming\CaliYox FiveM.exe
  "C:\Users\Admin\AppData\Roaming\CaliYox FiveM.exe"
  2⤵
  - Executes dropped EXE
  PID:1676
- C:\Users\Admin\AppData\Local\Temp\Host Process for Windows Tasks.exe
  "C:\Users\Admin\AppData\Local\Temp\Host Process for Windows Tasks.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Host Process for Windows Tasks.exe" "Host Process for Windows Tasks.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:868
- C:\Users\Admin\AppData\Local\Temp\Windows SmartScreen.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows SmartScreen.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

Download Submit
C:\Users\Admin\AppData\Local\Temp\Host Process for Windows Tasks.exe

Filesize
36KB

MD5
fcdc6964b1b17dedc0d928b488cd1b30

SHA1
3ac527fee49be0310a25487e07d93272a41c2ecb

SHA256
3becdc468b40f9c01dcd0e06752afad251741d4294e563b0ec42bf0852a12451

SHA512
b98b8a390e72fc5464be85efeebb969e72791f38db36b8273ba9638dc0e83bcf1087eaed8f4658e5a07b76f1115c1efea00156107607fe91eb4c70624ab157d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarD7EF.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

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

Filesize
32KB

MD5
c51af2c2a47ba5716ba57939bbe28b5d

SHA1
3e7294cba2e81cec02b5c18db9c8e6b6fdea60a6

SHA256
52055979386ff9f81bceaa8a2a2e2be3f0f78e74097bf34b7c7aa8bd0cd01033

SHA512
0f0e9dcd7eb85820e4be8a19cc471b8599c1b69e2750b528e88e8fd508bd994a382f4fdd10850f74966732c6e46a48ec92c9155c1bb516a2e94de70494ade28a

Download Submit
C:\Users\Admin\AppData\Roaming\CaliYox FiveM.exe

Filesize
37.2MB

MD5
8cf1928b5da5ddd02dbfb2128e548547

SHA1
b0a9acd8f07ee39a6c4e6fa2b620dce61cda1351

SHA256
a3195171c49c7e11962fd7d4b220da141710ba6005515eed71efb55bfd699de1

SHA512
c9ea29fa9d8d40628fe9b9c6aa15ca3e073f6ed692897e56a1858bb89557d30f3b964b3107c357de34d71a9ac58037463bb462d6e7b900e58cc7c00c320b1d33

Download Submit
memory/2128-0-0x0000000074D61000-0x0000000074D62000-memory.dmp

Filesize
4KB

Download
memory/2128-1-0x0000000074D60000-0x000000007530B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-2-0x0000000074D60000-0x000000007530B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-24-0x0000000074D60000-0x000000007530B000-memory.dmp

Filesize
5.7MB

Download
memory/2768-25-0x0000000000D30000-0x0000000000D3E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads