njrat | 5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c

Analysis

max time kernel
204s
max time network
209s
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, 17:03

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General

Target

5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe
Size

585KB
MD5

593c49bcff04c91af78483c1d8d87cbd
SHA1

15499641c22650e742a2497b81de0fec8a6a5f84
SHA256

5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c
SHA512

9523027b47ee703211fb69858fa9213087c01186586a94d10f678ef35929fc211eea1be8e0acd285e44d9c96b1ee950ea280ee1fc547a1c861ae32c5923fbdaf
SSDEEP

12288:YsTrR2sP7XY655ig1Gi9iDen9Fsl7ut0ZOwRdu+qMd0QZh9u:YsTrR5P7XY655ig1Gi9iDen9s7utuvvu

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
2664	image.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3444	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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7e2ffce1a32cea53c8ed10142ed958be.exe	image.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7e2ffce1a32cea53c8ed10142ed958be.exe	image.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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7e2ffce1a32cea53c8ed10142ed958be = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\image.exe\" .."	image.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7e2ffce1a32cea53c8ed10142ed958be = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\image.exe\" .."	image.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 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe
Token: 33	2664	image.exe
Token: SeIncBasePriorityPrivilege	2664	image.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 2664	4000	5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe	82
PID 4000 wrote to memory of 2664	4000	5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe	82
PID 2664 wrote to memory of 3444	2664	image.exe	83
PID 2664 wrote to memory of 3444	2664	image.exe	83

C:\Users\Admin\AppData\Local\Temp\5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe
"C:\Users\Admin\AppData\Local\Temp\5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Users\Admin\AppData\Local\Temp\image.exe
  "C:\Users\Admin\AppData\Local\Temp\image.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\image.exe" "image.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\image.exe

Filesize
585KB

MD5
593c49bcff04c91af78483c1d8d87cbd

SHA1
15499641c22650e742a2497b81de0fec8a6a5f84

SHA256
5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c

SHA512
9523027b47ee703211fb69858fa9213087c01186586a94d10f678ef35929fc211eea1be8e0acd285e44d9c96b1ee950ea280ee1fc547a1c861ae32c5923fbdaf

Download Submit
C:\Users\Admin\AppData\Local\Temp\image.exe

Filesize
585KB

MD5
593c49bcff04c91af78483c1d8d87cbd

SHA1
15499641c22650e742a2497b81de0fec8a6a5f84

SHA256
5c1fde5711e603055eda9c5c45df3699a770bffc5498331db5f51963cedd0c5c

SHA512
9523027b47ee703211fb69858fa9213087c01186586a94d10f678ef35929fc211eea1be8e0acd285e44d9c96b1ee950ea280ee1fc547a1c861ae32c5923fbdaf

Download Submit
memory/2664-136-0x00007FFC98340000-0x00007FFC98D76000-memory.dmp

Filesize
10.2MB

Download
memory/4000-132-0x00007FFC98340000-0x00007FFC98D76000-memory.dmp

Filesize
10.2MB

Download