njrat | d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72

General

Target

d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe
Size

191KB
MD5

238be19a4d09fce1abc4e9a8c0981186
SHA1

7f8acd24fb6141ae44f7c76cdd498fa6c480eb4c
SHA256

d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72
SHA512

9c7fed0fa2aa6a70cf61d1375b39ed7ecdbaf99ccc4e246488d7e170da600d54e6de445b316211e7f83f4c854e40e1dbbc74850dadcd8eceb6f13db8a78ad66b
SSDEEP

3072:DWrV0V4bU0Hi2yYE45pqIyuF2kq9pFyzPivI+rnRovf/R9qVQlku8nF/A4UQjwB:uimwsivI+rngHOCoAz8c

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
208	winDeck.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3752	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cded36c3d4a63d0331843c68142849e0.exe	winDeck.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cded36c3d4a63d0331843c68142849e0.exe	winDeck.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cded36c3d4a63d0331843c68142849e0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winDeck.exe\" .."	winDeck.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\cded36c3d4a63d0331843c68142849e0 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winDeck.exe\" .."	winDeck.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

description	pid	Process
Token: SeDebugPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe
Token: 33	208	winDeck.exe
Token: SeIncBasePriorityPrivilege	208	winDeck.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 208	4760	d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe	83
PID 4760 wrote to memory of 208	4760	d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe	83
PID 4760 wrote to memory of 208	4760	d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe	83
PID 208 wrote to memory of 3752	208	winDeck.exe	84
PID 208 wrote to memory of 3752	208	winDeck.exe	84
PID 208 wrote to memory of 3752	208	winDeck.exe	84

C:\Users\Admin\AppData\Local\Temp\d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe
"C:\Users\Admin\AppData\Local\Temp\d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Roaming\winDeck.exe
  "C:\Users\Admin\AppData\Roaming\winDeck.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:208
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\winDeck.exe" "winDeck.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:3752

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\winDeck.exe

Filesize
191KB

MD5
238be19a4d09fce1abc4e9a8c0981186

SHA1
7f8acd24fb6141ae44f7c76cdd498fa6c480eb4c

SHA256
d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72

SHA512
9c7fed0fa2aa6a70cf61d1375b39ed7ecdbaf99ccc4e246488d7e170da600d54e6de445b316211e7f83f4c854e40e1dbbc74850dadcd8eceb6f13db8a78ad66b

Download Submit
C:\Users\Admin\AppData\Roaming\winDeck.exe

Filesize
191KB

MD5
238be19a4d09fce1abc4e9a8c0981186

SHA1
7f8acd24fb6141ae44f7c76cdd498fa6c480eb4c

SHA256
d2d84db6782f5f6a02bc4e369e455a7cc8373725980dccbb1e20385e67b71e72

SHA512
9c7fed0fa2aa6a70cf61d1375b39ed7ecdbaf99ccc4e246488d7e170da600d54e6de445b316211e7f83f4c854e40e1dbbc74850dadcd8eceb6f13db8a78ad66b

Download Submit
memory/208-137-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/208-139-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/4760-132-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download
memory/4760-136-0x00000000746C0000-0x0000000074C71000-memory.dmp

Filesize
5.7MB

Download

Analysis

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