njrat | 9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e

General

Target

9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe
Size

49KB
MD5

0b501df18e007b62d5547315e78c966c
SHA1

bbb6b8207e9d4abea8b185ee1e8109c49f32e529
SHA256

9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e
SHA512

aad4711d44ee2fecfca593e96c2629cc92a55d0ba2ba4f90c39eddcc13aafbc01a19dbdecd3cd56881b186f73fcab5f1c538afa0645ab0ba51f413b98ba4d908
SSDEEP

768:ipe4Aaa6S8Xctg05Is64ifwIbPP+S4DXNNE5Hsic2Gu7UyP24tPuR4bk8pPMEDtz:ipe4ta8XgIxBPmHTE5xe0YR7ckKNn

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
4760	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4416	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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\91876f55cd38de2882ec1620e4d8c699.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\91876f55cd38de2882ec1620e4d8c699.exe	server.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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\91876f55cd38de2882ec1620e4d8c699 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\91876f55cd38de2882ec1620e4d8c699 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.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	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe
Token: 33	4760	server.exe
Token: SeIncBasePriorityPrivilege	4760	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 4760	1384	9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe	83
PID 1384 wrote to memory of 4760	1384	9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe	83
PID 4760 wrote to memory of 4416	4760	server.exe	84
PID 4760 wrote to memory of 4416	4760	server.exe	84

C:\Users\Admin\AppData\Local\Temp\9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe
"C:\Users\Admin\AppData\Local\Temp\9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Roaming\server.exe
  "C:\Users\Admin\AppData\Roaming\server.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4416

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\server.exe

Filesize
49KB

MD5
0b501df18e007b62d5547315e78c966c

SHA1
bbb6b8207e9d4abea8b185ee1e8109c49f32e529

SHA256
9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e

SHA512
aad4711d44ee2fecfca593e96c2629cc92a55d0ba2ba4f90c39eddcc13aafbc01a19dbdecd3cd56881b186f73fcab5f1c538afa0645ab0ba51f413b98ba4d908

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

Filesize
49KB

MD5
0b501df18e007b62d5547315e78c966c

SHA1
bbb6b8207e9d4abea8b185ee1e8109c49f32e529

SHA256
9ce152d52a75e3638c7b6f2f5203bb83dd7459ccb4dfc31fa69d8a55381fbf2e

SHA512
aad4711d44ee2fecfca593e96c2629cc92a55d0ba2ba4f90c39eddcc13aafbc01a19dbdecd3cd56881b186f73fcab5f1c538afa0645ab0ba51f413b98ba4d908

Download Submit
memory/1384-132-0x0000000000610000-0x0000000000622000-memory.dmp

Filesize
72KB

Download
memory/1384-133-0x00007FFD8C490000-0x00007FFD8CF51000-memory.dmp

Filesize
10.8MB

Download
memory/1384-137-0x00007FFD8C490000-0x00007FFD8CF51000-memory.dmp

Filesize
10.8MB

Download
memory/4760-138-0x00007FFD8C490000-0x00007FFD8CF51000-memory.dmp

Filesize
10.8MB

Download
memory/4760-140-0x00007FFD8C490000-0x00007FFD8CF51000-memory.dmp

Filesize
10.8MB

Download

Analysis

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