njrat | a7944fdf95ed74bba7ccb37fdc4eaef499c4c6f8d9b28044f4c864ad1f04dc94

General

Target
b3279dbd80cbb71976a4b6be3fd2cbf3.exe
Size 156KB
Sample220611-c7khmaedf7
SHA256 a7944fdf95ed74bba7ccb37fdc4eaef499c4c6f8d9b28044f4c864ad1f04dc94
MD5 b3279dbd80cbb71976a4b6be3fd2cbf3
SHA1 e7d771793ecaf349621d747de6747bdde3c14910
SHA512 2c0cac9e6d4694704411c0678fb90c972cfa996b0c5133861563283dd09734c4bd03f6239c5bccd32fd79f9103456716a895b5231b5ac74570318f6819cedb96
MD5 SHA1 SHA512

Score

10^/10

njrat evasion persistence suricata trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata

Executes dropped EXE 1 IoCs

pid	Process
1456	WindowsServices.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
440	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	b3279dbd80cbb71976a4b6be3fd2cbf3.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\89bb0753768638d5e20a39fa982d9416.exe	WindowsServices.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\89bb0753768638d5e20a39fa982d9416.exe	WindowsServices.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\89bb0753768638d5e20a39fa982d9416 = "\"C:\\Users\\Admin\\AppData\\Roaming\\WindowsServices.exe\" .."	WindowsServices.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\89bb0753768638d5e20a39fa982d9416 = "\"C:\\Users\\Admin\\AppData\\Roaming\\WindowsServices.exe\" .."	WindowsServices.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 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe
Token: 33	1456	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	1456	WindowsServices.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4660 wrote to memory of 1456	4660	b3279dbd80cbb71976a4b6be3fd2cbf3.exe	85
PID 4660 wrote to memory of 1456	4660	b3279dbd80cbb71976a4b6be3fd2cbf3.exe	85
PID 4660 wrote to memory of 1456	4660	b3279dbd80cbb71976a4b6be3fd2cbf3.exe	85
PID 1456 wrote to memory of 440	1456	WindowsServices.exe	88
PID 1456 wrote to memory of 440	1456	WindowsServices.exe	88
PID 1456 wrote to memory of 440	1456	WindowsServices.exe	88

C:\Users\Admin\AppData\Local\Temp\b3279dbd80cbb71976a4b6be3fd2cbf3.exe
"C:\Users\Admin\AppData\Local\Temp\b3279dbd80cbb71976a4b6be3fd2cbf3.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Users\Admin\AppData\Roaming\WindowsServices.exe
  "C:\Users\Admin\AppData\Roaming\WindowsServices.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\WindowsServices.exe" "WindowsServices.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:440

Network

MITRE ATT&CK Enterprise 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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

WindowsServices.exe

Path C:\Users\Admin\AppData\Roaming\WindowsServices.exe
Size 156KB
SHA256 a7944fdf95ed74bba7ccb37fdc4eaef499c4c6f8d9b28044f4c864ad1f04dc94
MD5 b3279dbd80cbb71976a4b6be3fd2cbf3
SHA1 e7d771793ecaf349621d747de6747bdde3c14910
SHA512 2c0cac9e6d4694704411c0678fb90c972cfa996b0c5133861563283dd09734c4bd03f6239c5bccd32fd79f9103456716a895b5231b5ac74570318f6819cedb96
SSDEEP 3072:FBA+0r6qHc3ldJJv7QmZIc8AV1hT1GU0A8cUzvL:c81db7xCc8i9GPRcev
MD5 SHA1 SHA512 SSDEEP

Submit Download

WindowsServices.exe

Path C:\Users\Admin\AppData\Roaming\WindowsServices.exe
Size 156KB
SHA256 a7944fdf95ed74bba7ccb37fdc4eaef499c4c6f8d9b28044f4c864ad1f04dc94
MD5 b3279dbd80cbb71976a4b6be3fd2cbf3
SHA1 e7d771793ecaf349621d747de6747bdde3c14910
SHA512 2c0cac9e6d4694704411c0678fb90c972cfa996b0c5133861563283dd09734c4bd03f6239c5bccd32fd79f9103456716a895b5231b5ac74570318f6819cedb96
SSDEEP 3072:FBA+0r6qHc3ldJJv7QmZIc8AV1hT1GU0A8cUzvL:c81db7xCc8i9GPRcev
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1456-135-0x0000000074F50000-0x0000000075501000-memory.dmp

Download

memory/1456-137-0x0000000074F50000-0x0000000075501000-memory.dmp

Download

memory/4660-130-0x0000000074F50000-0x0000000075501000-memory.dmp

Download

memory/4660-134-0x0000000074F50000-0x0000000075501000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads