528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e

Analysis

max time kernel
202s
max time network
249s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:45

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General

Target

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
Size

1.7MB
MD5

3252406fbbe1a7a883ad6935b5ff7b44
SHA1

04a855b176cce65a5d8f5c5962cb071eb2829b12
SHA256

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e
SHA512

86cea605369b07b01b5bbaf507e13091e5b21518c68f5b7e429f0390ed7202da370503f33ff6537ae165999c940587eda552522091769b36c1dc616868e47773
SSDEEP

49152:xjrGFvecsO1VyuA1zRUMjcXYzC5T2Ocjpm:4phDVy71zRtjodT2XjU

Score

9^/10

discovery spyware stealer upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\SelfDel.dll	acprotect
behavioral2/memory/3808-151-0x00000000737B0000-0x00000000737B9000-memory.dmp	acprotect

Drops file in Drivers directory 2 IoCs

Processes:

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe

description	ioc	process
File created	C:\Windows\System32\drivers\mosfilterdrv.sys	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File opened for modification	C:\Windows\System32\drivers\mosfilterdrv.sys	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe

Executes dropped EXE 3 IoCs

Processes:

nfregdrv.exeimport_root_cert.exeNJax.exe

pid process

628 nfregdrv.exe
1184 import_root_cert.exe
2328 NJax.exe

pid	process
628	nfregdrv.exe
1184	import_root_cert.exe
2328	NJax.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\SelfDel.dll	upx
behavioral2/memory/3808-151-0x00000000737B0000-0x00000000737B9000-memory.dmp	upx

Loads dropped DLL 8 IoCs

Processes:

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exenfregdrv.exeNJax.exe

pid	process
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
628	nfregdrv.exe
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
2328	NJax.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

Processes:

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe

description	ioc	process
File created	C:\Program Files (x86)\NJax\NJax.exe	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\nfapi.dll	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\ssleay32.dll	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\libeay32.dll	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\mosfilterdrv.sys	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File opened for modification	C:\Program Files (x86)\NJax\mosfilterdrv.sys	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\ProtocolFilters.dll	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\nfregdrv.exe	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
File created	C:\Program Files (x86)\NJax\remove_njax.exe	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.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 FindShellTrayWindow 1 IoCs

Processes:

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe

pid process

3808 528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.execmd.exe

description	pid	process	target process
PID 3808 wrote to memory of 628	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	nfregdrv.exe
PID 3808 wrote to memory of 628	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	nfregdrv.exe
PID 3808 wrote to memory of 628	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	nfregdrv.exe
PID 3808 wrote to memory of 1604	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	cmd.exe
PID 3808 wrote to memory of 1604	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	cmd.exe
PID 1604 wrote to memory of 1184	1604	cmd.exe	import_root_cert.exe
PID 1604 wrote to memory of 1184	1604	cmd.exe	import_root_cert.exe
PID 1604 wrote to memory of 1184	1604	cmd.exe	import_root_cert.exe
PID 3808 wrote to memory of 2328	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	NJax.exe
PID 3808 wrote to memory of 2328	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	NJax.exe
PID 3808 wrote to memory of 2328	3808	528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe	NJax.exe

C:\Users\Admin\AppData\Local\Temp\528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe
"C:\Users\Admin\AppData\Local\Temp\528e851829bc704e72399308a139291053468a53d2ca3a0fe4335f6a51fb8e0e.exe"
1⤵
- Drops file in Drivers directory
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3808

C:\Program Files (x86)\NJax\nfregdrv.exe
nfregdrv.exe C:\Windows\system32\drivers\mosfilterdrv.sys
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:628

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:1604

C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import_root_cert.exe
C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import_root_cert.exe "C:\Users\Admin\AppData\Local\Temp\NJax\SSL\NJaxSSL.cer"
3⤵
- Executes dropped EXE
PID:1184

C:\Program Files (x86)\NJax\NJax.exe
"C:\Program Files (x86)\NJax\NJax.exe" /install /SILENT
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\NJax\NJax.exe
Filesize
433KB

MD5
4b20907ce23537d3cac5901ea3a236d2

SHA1
9becf6a793563693bcd98b22d863db55e43abdb0

SHA256
051f18a0bba6530d56913c78fb8442098ff77e17a7b36cf1bc728cc9da9ea6a5

SHA512
5eb33f9824296e06ebd7a645367f9c9a842aeb9b96012e036023f799a03e3f4f551a90236d9a53b31b3cdf6d8c0f259b82d9550b4363efc9b33329af6e5764f4

Download Submit
C:\Program Files (x86)\NJax\NJax.exe
Filesize
433KB

MD5
4b20907ce23537d3cac5901ea3a236d2

SHA1
9becf6a793563693bcd98b22d863db55e43abdb0

SHA256
051f18a0bba6530d56913c78fb8442098ff77e17a7b36cf1bc728cc9da9ea6a5

SHA512
5eb33f9824296e06ebd7a645367f9c9a842aeb9b96012e036023f799a03e3f4f551a90236d9a53b31b3cdf6d8c0f259b82d9550b4363efc9b33329af6e5764f4

Download Submit
C:\Program Files (x86)\NJax\ProtocolFilters.dll
Filesize
332KB

MD5
9c9694225679c7c577d72ea1537544cc

SHA1
8342872c5ef4d8c265eace1903a5ca2c7a38905c

SHA256
615f0ab9ecdef7834a6943623752cae5814b06d2f4894e9da074a7e3b68ea86e

SHA512
0c0558484cbbd12d5401b3a58b4ebf494d4740f4764491acc0e30a35c9a202c89e9ab7590675b5c729cd200025af2658dd723335f049cbaf44cdfb068312a74a

Download Submit
C:\Program Files (x86)\NJax\nfapi.dll
Filesize
116KB

MD5
d8305b5c2810e2e135f87bb32d62810e

SHA1
e78991c4d920b61f068c27071253ab5e825572bc

SHA256
a035dde03f95ad199a74e141089ea94d24abb42f56a9cc14c86c76c6ce6932ec

SHA512
c01145ec54a3e2010d777625b65660f4d88a6488de171a97fdfe29b7da15c45aaa88b49a54046d42d199d5685560670ef2ccc6df3c915fda77a02796069123ab

Download Submit
C:\Program Files (x86)\NJax\nfapi.dll
Filesize
116KB

MD5
d8305b5c2810e2e135f87bb32d62810e

SHA1
e78991c4d920b61f068c27071253ab5e825572bc

SHA256
a035dde03f95ad199a74e141089ea94d24abb42f56a9cc14c86c76c6ce6932ec

SHA512
c01145ec54a3e2010d777625b65660f4d88a6488de171a97fdfe29b7da15c45aaa88b49a54046d42d199d5685560670ef2ccc6df3c915fda77a02796069123ab

Download Submit
C:\Program Files (x86)\NJax\nfapi.dll
Filesize
116KB

MD5
d8305b5c2810e2e135f87bb32d62810e

SHA1
e78991c4d920b61f068c27071253ab5e825572bc

SHA256
a035dde03f95ad199a74e141089ea94d24abb42f56a9cc14c86c76c6ce6932ec

SHA512
c01145ec54a3e2010d777625b65660f4d88a6488de171a97fdfe29b7da15c45aaa88b49a54046d42d199d5685560670ef2ccc6df3c915fda77a02796069123ab

Download Submit
C:\Program Files (x86)\NJax\nfregdrv.exe
Filesize
48KB

MD5
01b5780505301ada6dc102fb77b2298c

SHA1
328c3931a54af2d7adb88ba4c4c18ce1af8d5a72

SHA256
aad2d85472448abe8250cf3180c3d0373540f46e8a8e76d8ef2f78db62be0812

SHA512
bc5bd91c46f452a76ae0595287622256e8c79e90158171bedf6b68d4439dfefceb06948bd49deb0aeb1344ce89a312bb87b01e2daf3880729fff642951c33947

Download Submit
C:\Program Files (x86)\NJax\nfregdrv.exe
Filesize
48KB

MD5
01b5780505301ada6dc102fb77b2298c

SHA1
328c3931a54af2d7adb88ba4c4c18ce1af8d5a72

SHA256
aad2d85472448abe8250cf3180c3d0373540f46e8a8e76d8ef2f78db62be0812

SHA512
bc5bd91c46f452a76ae0595287622256e8c79e90158171bedf6b68d4439dfefceb06948bd49deb0aeb1344ce89a312bb87b01e2daf3880729fff642951c33947

Download Submit
C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import.bat
Filesize
66B

MD5
0b1777825d2b22502042da74398ea2ae

SHA1
e1f96e5ff8dfade89e5517711e9e9aa4b90a305f

SHA256
e1a81e904b5ebeabf2a4f791d29299b2d681f56c164f71c8d29de44c4c4ab492

SHA512
e8473d28bc61d33d8afe43c8f2cb547d6a4e8d55d2f37858e3c118432fb7da97511709acf9466a1a2f828050bbed259021982603c9b2fcfb91fae60d89853f3d

Download Submit
C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import_root_cert.exe
Filesize
92KB

MD5
1c76d7defa116a328f47036b54126e6c

SHA1
8a0e534388b552a57da85b2fe015168fc1164d08

SHA256
0cf513ba175e46c598be4f7272fbe03a30ba65b1221e45b36cf5945853b9e39e

SHA512
2aefa82b7bde1d219aa0cf81b91a5caff82d7df695e95b0c14ec04056601411e10e245efa25ced309136611d6ce426cb187d867c39ef1d5d6b1b57827e942674

Download Submit
C:\Users\Admin\AppData\Local\Temp\NJax\SSL\import_root_cert.exe
Filesize
92KB

MD5
1c76d7defa116a328f47036b54126e6c

SHA1
8a0e534388b552a57da85b2fe015168fc1164d08

SHA256
0cf513ba175e46c598be4f7272fbe03a30ba65b1221e45b36cf5945853b9e39e

SHA512
2aefa82b7bde1d219aa0cf81b91a5caff82d7df695e95b0c14ec04056601411e10e245efa25ced309136611d6ce426cb187d867c39ef1d5d6b1b57827e942674

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\SelfDel.dll
Filesize
5KB

MD5
e5786e8703d651bc8bd4bfecf46d3844

SHA1
fee5aa4b325deecbf69ccb6eadd89bd5ae59723f

SHA256
d115bce0a787b4f895e700efe943695c8f1087782807d91d831f6015b0f98774

SHA512
d14ad43a01db19428cd8ccd2fe101750860933409b5be2eb85a3e400efcd37b1b6425ce84e87a7fe46ecabc7b91c4b450259e624c178b86e194ba7da97957ba3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\SimpleSC.dll
Filesize
61KB

MD5
d63975ce28f801f236c4aca5af726961

SHA1
3d93ad9816d3b3dba1e63dfcbfa3bd05f787a8c9

SHA256
e0c580bbe48a483075c21277c6e0f23f3cbd6ce3eb2ccd3bf48cf68f05628f43

SHA512
8357e1955560bf0c42a8f4091550c87c19b4939bf1e6a53a54173d1c163b133b9c517014af6f7614eddc0c9bbf93b3b987c4977b024b10b05b3dc4eb20141810

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\SimpleSC.dll
Filesize
61KB

MD5
d63975ce28f801f236c4aca5af726961

SHA1
3d93ad9816d3b3dba1e63dfcbfa3bd05f787a8c9

SHA256
e0c580bbe48a483075c21277c6e0f23f3cbd6ce3eb2ccd3bf48cf68f05628f43

SHA512
8357e1955560bf0c42a8f4091550c87c19b4939bf1e6a53a54173d1c163b133b9c517014af6f7614eddc0c9bbf93b3b987c4977b024b10b05b3dc4eb20141810

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\System.dll
Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb82B.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
memory/628-133-0x0000000000000000-mapping.dmp

Download
memory/1184-142-0x0000000000000000-mapping.dmp

Download
memory/1604-140-0x0000000000000000-mapping.dmp

Download
memory/2328-148-0x0000000000000000-mapping.dmp

Download
memory/3808-151-0x00000000737B0000-0x00000000737B9000-memory.dmp

Filesize
36KB

Download
memory/3808-147-0x0000000000631000-0x000000000063D000-memory.dmp

Filesize
48KB

Download