njrat | b789d984abae7c36f9b71ae421e8c05602728d7a0ec0b3742632eb819fb661f8

Resubmissions

20-02-2023 15:51

230220-tavqrsbe76 10

Analysis

max time kernel
23s
max time network
26s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20-02-2023 15:51

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General

Target

BlitzedGrabber.exe
Size

2.3MB
MD5

e26786b1e73c9012aa5a395f5b539157
SHA1

6e1ebc73f642c21068f790b8574cced1f51becde
SHA256

b789d984abae7c36f9b71ae421e8c05602728d7a0ec0b3742632eb819fb661f8
SHA512

3e01078509597336b655adbf1428a4c90d7db8eff5e89c7de2a670995ea738550f4571ad9ff72edcd7c0fb08db77dce322ce02292269858119cf97f30f660d99
SSDEEP

24576:UoFnrj/BLDrrP9rkccneVkGpEwDN9fQbnOwqi0oTl7Q0aRtsDsfHQ+EgZC/IioEt:UoF/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:

BlitzedGrabber.exepaylod.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	BlitzedGrabber.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	paylod.exe

Drops startup file 2 IoCs

Processes:

paylod.exeBlitzedGrabber.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	BlitzedGrabber.exe

Executes dropped EXE 3 IoCs

Processes:

paylod.exeCustomEXE.exeBlitzedGrabber.exe

pid process

3236 paylod.exe
4708 CustomEXE.exe
4432 BlitzedGrabber.exe
Loads dropped DLL 1 IoCs

Processes:

CustomEXE.exe

pid process

4708 CustomEXE.exe

pid	process
3236	paylod.exe
4708	CustomEXE.exe
4432	BlitzedGrabber.exe

pid	process
4708	CustomEXE.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

BlitzedGrabber.exepaylod.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	BlitzedGrabber.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	BlitzedGrabber.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\BlitzedGrabber.exe"	paylod.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	BlitzedGrabber.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Windows.URL"	BlitzedGrabber.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 3 IoCs

Processes:

BlitzedGrabber.exe

description	pid	process
Token: SeDebugPrivilege	4432	BlitzedGrabber.exe
Token: 33	4432	BlitzedGrabber.exe
Token: SeIncBasePriorityPrivilege	4432	BlitzedGrabber.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

CustomEXE.exe

pid process

4708 CustomEXE.exe
4708 CustomEXE.exe

pid	process
4708	CustomEXE.exe
4708	CustomEXE.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

BlitzedGrabber.exepaylod.exe

description	pid	process	target process
PID 4176 wrote to memory of 3236	4176	BlitzedGrabber.exe	paylod.exe
PID 4176 wrote to memory of 3236	4176	BlitzedGrabber.exe	paylod.exe
PID 4176 wrote to memory of 3236	4176	BlitzedGrabber.exe	paylod.exe
PID 4176 wrote to memory of 4708	4176	BlitzedGrabber.exe	CustomEXE.exe
PID 4176 wrote to memory of 4708	4176	BlitzedGrabber.exe	CustomEXE.exe
PID 4176 wrote to memory of 4708	4176	BlitzedGrabber.exe	CustomEXE.exe
PID 3236 wrote to memory of 4432	3236	paylod.exe	BlitzedGrabber.exe
PID 3236 wrote to memory of 4432	3236	paylod.exe	BlitzedGrabber.exe
PID 3236 wrote to memory of 4432	3236	paylod.exe	BlitzedGrabber.exe
PID 3236 wrote to memory of 5044	3236	paylod.exe	attrib.exe
PID 3236 wrote to memory of 5044	3236	paylod.exe	attrib.exe
PID 3236 wrote to memory of 5044	3236	paylod.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

5044 attrib.exe

pid	process
5044	attrib.exe

C:\Users\Admin\AppData\Local\Temp\BlitzedGrabber.exe
"C:\Users\Admin\AppData\Local\Temp\BlitzedGrabber.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176

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:3236

C:\Users\Admin\AppData\Roaming\BlitzedGrabber.exe
"C:\Users\Admin\AppData\Roaming\BlitzedGrabber.exe"
3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:4432

C:\Windows\SysWOW64\attrib.exe
attrib +h +r +s "C:\Users\Admin\AppData\Roaming\BlitzedGrabber.exe"
3⤵
- Views/modifies file attributes
PID:5044

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:4708

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
087825a9bbd97611aea7189792428793

SHA1
0e8a47b7de1c4767359ed493862477355e3a41b0

SHA256
0cb0d61f335b32fd1b76d55a329b10b61824549b797833e9a32e4a48209b7a61

SHA512
0e24b126b1ce17ddbd29e7ce1d673377cff1dd777bd1134669bf659830be29eb2c5ffc971b277182ffca80512a9aa5b9dbff3c7ed78f007cdb206ed142de349f

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

MD5
087825a9bbd97611aea7189792428793

SHA1
0e8a47b7de1c4767359ed493862477355e3a41b0

SHA256
0cb0d61f335b32fd1b76d55a329b10b61824549b797833e9a32e4a48209b7a61

SHA512
0e24b126b1ce17ddbd29e7ce1d673377cff1dd777bd1134669bf659830be29eb2c5ffc971b277182ffca80512a9aa5b9dbff3c7ed78f007cdb206ed142de349f

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

MD5
087825a9bbd97611aea7189792428793

SHA1
0e8a47b7de1c4767359ed493862477355e3a41b0

SHA256
0cb0d61f335b32fd1b76d55a329b10b61824549b797833e9a32e4a48209b7a61

SHA512
0e24b126b1ce17ddbd29e7ce1d673377cff1dd777bd1134669bf659830be29eb2c5ffc971b277182ffca80512a9aa5b9dbff3c7ed78f007cdb206ed142de349f

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

MD5
087825a9bbd97611aea7189792428793

SHA1
0e8a47b7de1c4767359ed493862477355e3a41b0

SHA256
0cb0d61f335b32fd1b76d55a329b10b61824549b797833e9a32e4a48209b7a61

SHA512
0e24b126b1ce17ddbd29e7ce1d673377cff1dd777bd1134669bf659830be29eb2c5ffc971b277182ffca80512a9aa5b9dbff3c7ed78f007cdb206ed142de349f

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

MD5
c87a0c01932e2b874bc3b392253a663a

SHA1
51422af62636aaaedfccbe8e4f49ffc027a90989

SHA256
8a2b0b8a4e2bd3a1d8bad6ccd1dd2b92561b9abb7156b6701a6190458507795c

SHA512
ffd135cebd6e00bb32e0fba5361554e617af27556022ab3cb04c43eae8121ebd17d3868bef382061d7cbc993e805e1501bd580bdcead8f77b44f8889ac14c0a8

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

MD5
586210e5f1de944d08dd141fcadd408a

SHA1
0b539a283bfe6c23839a5c44f668af3ae205288d

SHA256
90a7d4cf6b4f075b45da710cf2f1fdfa71d0a654beb240fb74ff968ead06f742

SHA512
4a2ffa2d32f1bbcbfb1d0d76509717b9088ccb99557e47b03b03277524d4f1c6bc419dd91537ffd7e8fee7e427c017de3bec88c80c21c326388efe45c3dccca6

Download Submit
memory/3236-133-0x0000000000000000-mapping.dmp

Download
memory/3236-142-0x0000000005810000-0x00000000058AC000-memory.dmp

Filesize
624KB

Download
memory/3236-141-0x0000000000FB0000-0x0000000000FBC000-memory.dmp

Filesize
48KB

Download
memory/4176-139-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/4176-132-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/4432-156-0x0000000006110000-0x0000000006176000-memory.dmp

Filesize
408KB

Download
memory/4432-149-0x0000000000000000-mapping.dmp

Download
memory/4708-148-0x00000000734D0000-0x0000000073507000-memory.dmp

Filesize
220KB

Download
memory/4708-140-0x00000000007B0000-0x000000000095C000-memory.dmp

Filesize
1.7MB

Download
memory/4708-147-0x00000000759C0000-0x0000000075A49000-memory.dmp

Filesize
548KB

Download
memory/4708-136-0x0000000000000000-mapping.dmp

Download
memory/4708-145-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/4708-144-0x0000000005230000-0x00000000052C2000-memory.dmp

Filesize
584KB

Download
memory/4708-155-0x00000000734D0000-0x0000000073507000-memory.dmp

Filesize
220KB

Download
memory/4708-143-0x0000000005940000-0x0000000005EE4000-memory.dmp

Filesize
5.6MB

Download
memory/5044-152-0x0000000000000000-mapping.dmp

Download