njrat | deec6b6b69cbec63d25876628c13cedf96e9efccc7a043fe5dfaf2f6c3615f67

Analysis

max time kernel
62s
max time network
65s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
20-02-2023 13:54

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General

Target

12.exe
Size

2.3MB
MD5

03abd18550cc6a9d86e1b952b857ec6c
SHA1

22e6d070ebf2b35f53a025b734bc5bb504306607
SHA256

deec6b6b69cbec63d25876628c13cedf96e9efccc7a043fe5dfaf2f6c3615f67
SHA512

b98c39e80d200b3809778ae9b5d3113ff44c463fb18d6c4756f687d9e67c93256c2de86304399c6966715d3e29d99b8981da63a0d1f5095fe7cb15aa57b8f7da
SSDEEP

24576:z8oFnrj/BLDrrP9rkccneVkGpEwDN9fQbnOwqi0oTl7Q0aRtsDsfHQ+EgZC/Iio8:woF/BNrJAGaWrNbJMlk0aAWHzLZCq96

Score

10^/10

njrat mybot persistence trojan

Malware Config

Extracted

Family

njrat

Version

v4.0

Botnet

MyBot

winter-rd.at.ply.gg:26394

Mutex

Windows

Attributes

reg_key
Windows
splitter
|-F-|

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

12.exepaylod.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	12.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	paylod.exe

Drops startup file 2 IoCs

Processes:

paylod.exePayload.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	paylod.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	Payload.exe

Executes dropped EXE 3 IoCs

Processes:

paylod.exeCustomEXE.exePayload.exe

pid process

4468 paylod.exe
3180 CustomEXE.exe
2540 Payload.exe
Loads dropped DLL 1 IoCs

Processes:

CustomEXE.exe

pid process

3180 CustomEXE.exe

pid	process
4468	paylod.exe
3180	CustomEXE.exe
2540	Payload.exe

pid	process
3180	CustomEXE.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

paylod.exePayload.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Payload.exe"	paylod.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	Payload.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	Payload.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	Payload.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	Payload.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 13 IoCs

Processes:

Payload.exe

description	pid	process
Token: SeDebugPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe
Token: 33	2540	Payload.exe
Token: SeIncBasePriorityPrivilege	2540	Payload.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

CustomEXE.exe

pid process

3180 CustomEXE.exe
3180 CustomEXE.exe

pid	process
3180	CustomEXE.exe
3180	CustomEXE.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

12.exepaylod.exe

description	pid	process	target process
PID 4220 wrote to memory of 4468	4220	12.exe	paylod.exe
PID 4220 wrote to memory of 4468	4220	12.exe	paylod.exe
PID 4220 wrote to memory of 4468	4220	12.exe	paylod.exe
PID 4220 wrote to memory of 3180	4220	12.exe	CustomEXE.exe
PID 4220 wrote to memory of 3180	4220	12.exe	CustomEXE.exe
PID 4220 wrote to memory of 3180	4220	12.exe	CustomEXE.exe
PID 4468 wrote to memory of 2540	4468	paylod.exe	Payload.exe
PID 4468 wrote to memory of 2540	4468	paylod.exe	Payload.exe
PID 4468 wrote to memory of 2540	4468	paylod.exe	Payload.exe
PID 4468 wrote to memory of 4864	4468	paylod.exe	attrib.exe
PID 4468 wrote to memory of 4864	4468	paylod.exe	attrib.exe
PID 4468 wrote to memory of 4864	4468	paylod.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4864 attrib.exe

pid	process
4864	attrib.exe

C:\Users\Admin\AppData\Local\Temp\12.exe
"C:\Users\Admin\AppData\Local\Temp\12.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4220

C:\Users\Admin\AppData\Local\Temp\paylod.exe
"C:\Users\Admin\AppData\Local\Temp\paylod.exe"
2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4468

C:\Users\Admin\AppData\Roaming\Payload.exe
"C:\Users\Admin\AppData\Roaming\Payload.exe"
3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2540

C:\Windows\SysWOW64\attrib.exe
attrib +h +r +s "C:\Users\Admin\AppData\Roaming\Payload.exe"
3⤵
- Views/modifies file attributes
PID:4864

C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe
"C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
PID:3180

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe
Filesize
1.6MB

MD5
228a69dc15032fd0fb7100ff8561185e

SHA1
f8dbc89fed8078da7f306cb78b92ce04a0bdeb00

SHA256
920bec9d500f6446b84399ab4c84858d0f0d7d1abb2e0377399ebbc4bafad709

SHA512
373621c4743fa72571b3c8375aa6f7852303a821558b016b002d2af07154787d978f66696db89eeed8fe41f4aed5d66b690d4f87469939f9b1dea2ac2b9101f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\CustomEXE.exe
Filesize
1.6MB

MD5
228a69dc15032fd0fb7100ff8561185e

SHA1
f8dbc89fed8078da7f306cb78b92ce04a0bdeb00

SHA256
920bec9d500f6446b84399ab4c84858d0f0d7d1abb2e0377399ebbc4bafad709

SHA512
373621c4743fa72571b3c8375aa6f7852303a821558b016b002d2af07154787d978f66696db89eeed8fe41f4aed5d66b690d4f87469939f9b1dea2ac2b9101f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\dcfb00f9-5ae7-4197-ba59-e48107e40d35\GunaDotNetRT.dll
Filesize
136KB

MD5
9af5eb006bb0bab7f226272d82c896c7

SHA1
c2a5bb42a5f08f4dc821be374b700652262308f0

SHA256
77dc05a6bda90757f66552ee3f469b09f1e00732b4edca0f542872fb591ed9db

SHA512
7badd41be4c1039302fda9bba19d374ec9446ce24b7db33b66bee4ef38180d1abcd666d2aea468e7e452aa1e1565eedfefed582bf1c2fe477a4171d99d48772a

Download Submit
C:\Users\Admin\AppData\Local\Temp\paylod.exe
Filesize
26KB

MD5
966a59574a110ede5ff4e489d278773a

SHA1
427b1088d83cd7528a7e13d81a9688ce6c2b5261

SHA256
940ae678064a838a8d85e539ab8a99e83b64d7337742d3180cb8c730808f9d5c

SHA512
480522397f317f6a1430c79025417297e0a6c095cbc83543dc31ee4ae17e482bbd8d2b12733bd39531668f16e23c38411b289b5c18cf0544a1d3b9fbe81a2b30

Download Submit
C:\Users\Admin\AppData\Local\Temp\paylod.exe
Filesize
26KB

MD5
966a59574a110ede5ff4e489d278773a

SHA1
427b1088d83cd7528a7e13d81a9688ce6c2b5261

SHA256
940ae678064a838a8d85e539ab8a99e83b64d7337742d3180cb8c730808f9d5c

SHA512
480522397f317f6a1430c79025417297e0a6c095cbc83543dc31ee4ae17e482bbd8d2b12733bd39531668f16e23c38411b289b5c18cf0544a1d3b9fbe81a2b30

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk
Filesize
1KB

MD5
85f4d5a0d345b03f5fb74adacf33c935

SHA1
1b15e471b60ceafda10079fc4cb13163de522df9

SHA256
5f0c16192f185fb4069e5989a4c43303e7fd25a4b93aac0cbb48e72c383f641a

SHA512
dc14682825b5bdd89657bfa2a7a0140813fb43552d777d35ddc7ef2be147a3ac8c7f729b68c1d344cff5b5268a02546616ce02e73049cd0da50420b23d13d7c6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows.lnk
Filesize
1KB

MD5
f30db323fdf0f01c78cb3e0c30e4f62e

SHA1
d2944fb108824efa8e9bc9deb56cc4463a431180

SHA256
65482fa73f6532982af8ca5f5f545786f39f7e3551421913bbfc07a2b7b75bc8

SHA512
156c770eb203b13edc705c20ab1dd1c6136236a0c1df6d0516d4a03877840398e8e606e29ff87f86bc235967740fa0a56eed5f659fa200b2e82126ad877fcf63

Download Submit
C:\Users\Admin\AppData\Roaming\Payload.exe
Filesize
26KB

MD5
966a59574a110ede5ff4e489d278773a

SHA1
427b1088d83cd7528a7e13d81a9688ce6c2b5261

SHA256
940ae678064a838a8d85e539ab8a99e83b64d7337742d3180cb8c730808f9d5c

SHA512
480522397f317f6a1430c79025417297e0a6c095cbc83543dc31ee4ae17e482bbd8d2b12733bd39531668f16e23c38411b289b5c18cf0544a1d3b9fbe81a2b30

Download Submit
C:\Users\Admin\AppData\Roaming\Payload.exe
Filesize
26KB

MD5
966a59574a110ede5ff4e489d278773a

SHA1
427b1088d83cd7528a7e13d81a9688ce6c2b5261

SHA256
940ae678064a838a8d85e539ab8a99e83b64d7337742d3180cb8c730808f9d5c

SHA512
480522397f317f6a1430c79025417297e0a6c095cbc83543dc31ee4ae17e482bbd8d2b12733bd39531668f16e23c38411b289b5c18cf0544a1d3b9fbe81a2b30

Download Submit
memory/2540-149-0x0000000000000000-mapping.dmp

Download
memory/2540-156-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/3180-148-0x0000000072280000-0x00000000722B7000-memory.dmp

Filesize
220KB

Download
memory/3180-136-0x0000000000000000-mapping.dmp

Download
memory/3180-145-0x0000000005860000-0x000000000586A000-memory.dmp

Filesize
40KB

Download
memory/3180-155-0x0000000072280000-0x00000000722B7000-memory.dmp

Filesize
220KB

Download
memory/3180-147-0x00000000737D0000-0x0000000073859000-memory.dmp

Filesize
548KB

Download
memory/3180-141-0x0000000000CB0000-0x0000000000E5C000-memory.dmp

Filesize
1.7MB

Download
memory/3180-143-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/3180-144-0x0000000005780000-0x0000000005812000-memory.dmp

Filesize
584KB

Download
memory/4220-132-0x0000000074730000-0x0000000074CE1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-139-0x0000000074730000-0x0000000074CE1000-memory.dmp

Filesize
5.7MB

Download
memory/4468-142-0x0000000005610000-0x00000000056AC000-memory.dmp

Filesize
624KB

Download
memory/4468-133-0x0000000000000000-mapping.dmp

Download
memory/4468-140-0x0000000000DF0000-0x0000000000DFC000-memory.dmp

Filesize
48KB

Download
memory/4864-151-0x0000000000000000-mapping.dmp

Download