njrat | 691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd

General

Target

691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe
Size

77KB
MD5

b4363c72117293e6255206899303107f
SHA1

1083c177d9bfd91ae7a66580a16ad895fb7d81ab
SHA256

691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd
SHA512

a3490667f895608a5b3c57d198f05e28c49480d2d0cf46e5930055a807a10180f13be627fbb3012ee219772dbb8b841d5f035a09323f08a8842dab1aa46d864f

Score

10^/10

njrat pbbr evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

PBBR

C2

kinholima.duckdns.org:1177

Mutex

a2677b62d1e55c91df28f4990150043c

Attributes

reg_key
a2677b62d1e55c91df28f4990150043c
splitter
|'|'|

Signatures

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

Processes:

chrome.exe

pid process

748 chrome.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
748	chrome.exe

Drops startup file 2 IoCs

Processes:

chrome.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a2677b62d1e55c91df28f4990150043c.exe	chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a2677b62d1e55c91df28f4990150043c.exe	chrome.exe

Loads dropped DLL 1 IoCs

Processes:

691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe

pid process

2004 691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe

pid	process
2004	691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chrome.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\a2677b62d1e55c91df28f4990150043c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\a2677b62d1e55c91df28f4990150043c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .."	chrome.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 31 IoCs

Processes:

chrome.exe

description	pid	process
Token: SeDebugPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe
Token: 33	748	chrome.exe
Token: SeIncBasePriorityPrivilege	748	chrome.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exechrome.exe

description	pid	process	target process
PID 2004 wrote to memory of 748	2004	691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe	chrome.exe
PID 2004 wrote to memory of 748	2004	691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe	chrome.exe
PID 2004 wrote to memory of 748	2004	691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe	chrome.exe
PID 2004 wrote to memory of 748	2004	691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe	chrome.exe
PID 748 wrote to memory of 816	748	chrome.exe	netsh.exe
PID 748 wrote to memory of 816	748	chrome.exe	netsh.exe
PID 748 wrote to memory of 816	748	chrome.exe	netsh.exe
PID 748 wrote to memory of 816	748	chrome.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe
"C:\Users\Admin\AppData\Local\Temp\691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004

C:\Users\Admin\AppData\Local\Temp\chrome.exe
"C:\Users\Admin\AppData\Local\Temp\chrome.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
3⤵
PID:816

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

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\chrome.exe
MD5
b4363c72117293e6255206899303107f

SHA1
1083c177d9bfd91ae7a66580a16ad895fb7d81ab

SHA256
691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd

SHA512
a3490667f895608a5b3c57d198f05e28c49480d2d0cf46e5930055a807a10180f13be627fbb3012ee219772dbb8b841d5f035a09323f08a8842dab1aa46d864f

Download Submit
C:\Users\Admin\AppData\Local\Temp\chrome.exe
MD5
b4363c72117293e6255206899303107f

SHA1
1083c177d9bfd91ae7a66580a16ad895fb7d81ab

SHA256
691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd

SHA512
a3490667f895608a5b3c57d198f05e28c49480d2d0cf46e5930055a807a10180f13be627fbb3012ee219772dbb8b841d5f035a09323f08a8842dab1aa46d864f

Download Submit
\Users\Admin\AppData\Local\Temp\chrome.exe
MD5
b4363c72117293e6255206899303107f

SHA1
1083c177d9bfd91ae7a66580a16ad895fb7d81ab

SHA256
691d66b7cec7b920b6b5c9e2e3551bc6671c022609387a8959bcbc39fd709ebd

SHA512
a3490667f895608a5b3c57d198f05e28c49480d2d0cf46e5930055a807a10180f13be627fbb3012ee219772dbb8b841d5f035a09323f08a8842dab1aa46d864f

Download Submit
memory/748-12-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/748-8-0x0000000000000000-mapping.dmp

Download
memory/748-11-0x0000000073AF0000-0x00000000741DE000-memory.dmp

Filesize
6.9MB

Download
memory/748-15-0x0000000004C50000-0x0000000004C51000-memory.dmp

Filesize
4KB

Download
memory/816-16-0x0000000000000000-mapping.dmp

Download
memory/816-17-0x0000000075EA1000-0x0000000075EA3000-memory.dmp

Filesize
8KB

Download
memory/2004-6-0x0000000000A10000-0x0000000000A16000-memory.dmp

Filesize
24KB

Download
memory/2004-5-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/2004-3-0x0000000001340000-0x0000000001341000-memory.dmp

Filesize
4KB

Download
memory/2004-2-0x0000000073AF0000-0x00000000741DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads