njrat | 91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e

General

Target

91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe
Size

43KB
MD5

19fb2ffd8bec4cafe940bbefe051551e
SHA1

24a0ec99cbd83b91f40e9262c10981f7310e5aad
SHA256

91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e
SHA512

67e5778fcc07dc3952fdce5bb72fe1ed74f502375991064fde5d756d4b0c715902335e729068a7dac6d69ebc0ce5ac088044025b208c52a9308ec2be2e984c1c

Score

10^/10

njrat system persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

System

C2

192.168.0.180:3131

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

smst.exe

pid process

1900 smst.exe

pid	process
1900	smst.exe

Drops startup file 2 IoCs

Processes:

smst.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	smst.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	smst.exe

Loads dropped DLL 1 IoCs

Processes:

91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe

pid process

480 91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe

pid	process
480	91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

smst.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\smst.exe\" .."	smst.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\smst.exe\" .."	smst.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

smst.exe

pid process

1900 smst.exe

pid	process
1900	smst.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

Processes:

smst.exe

description	pid	process
Token: SeDebugPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe
Token: 33	1900	smst.exe
Token: SeIncBasePriorityPrivilege	1900	smst.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe

description	pid	process	target process
PID 480 wrote to memory of 1900	480	91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe	smst.exe
PID 480 wrote to memory of 1900	480	91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe	smst.exe
PID 480 wrote to memory of 1900	480	91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe	smst.exe
PID 480 wrote to memory of 1900	480	91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe	smst.exe

C:\Users\Admin\AppData\Local\Temp\91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe
"C:\Users\Admin\AppData\Local\Temp\91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:480

C:\Users\Admin\AppData\Local\Temp\smst.exe
"C:\Users\Admin\AppData\Local\Temp\smst.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\smst.exe
Filesize
43KB

MD5
19fb2ffd8bec4cafe940bbefe051551e

SHA1
24a0ec99cbd83b91f40e9262c10981f7310e5aad

SHA256
91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e

SHA512
67e5778fcc07dc3952fdce5bb72fe1ed74f502375991064fde5d756d4b0c715902335e729068a7dac6d69ebc0ce5ac088044025b208c52a9308ec2be2e984c1c

Download Submit
C:\Users\Admin\AppData\Local\Temp\smst.exe
Filesize
43KB

MD5
19fb2ffd8bec4cafe940bbefe051551e

SHA1
24a0ec99cbd83b91f40e9262c10981f7310e5aad

SHA256
91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e

SHA512
67e5778fcc07dc3952fdce5bb72fe1ed74f502375991064fde5d756d4b0c715902335e729068a7dac6d69ebc0ce5ac088044025b208c52a9308ec2be2e984c1c

Download Submit
\Users\Admin\AppData\Local\Temp\smst.exe
Filesize
43KB

MD5
19fb2ffd8bec4cafe940bbefe051551e

SHA1
24a0ec99cbd83b91f40e9262c10981f7310e5aad

SHA256
91326d936da4abc53fd4e78c74450236db84949bdda19e14ea7632c47a311f2e

SHA512
67e5778fcc07dc3952fdce5bb72fe1ed74f502375991064fde5d756d4b0c715902335e729068a7dac6d69ebc0ce5ac088044025b208c52a9308ec2be2e984c1c

Download Submit
memory/480-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/480-55-0x0000000074410000-0x00000000749BB000-memory.dmp

Filesize
5.7MB

Download
memory/1900-57-0x0000000000000000-mapping.dmp

Download
memory/1900-61-0x0000000074410000-0x00000000749BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads