njrat | 49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f

General

Target

49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
Size

282KB
MD5

033d49d505d4acf1eabdd90d1d12b596
SHA1

d626e26ebe19098e0ffe73a3be6449229c9d3cd3
SHA256

49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f
SHA512

d42a1282c3eea5402fcb1c1ae26cbed194b7c1775faf56c9fec92b61c25ab627438eb007fdffd25ac2dedded251c6ad323f8a153b74a2a9f10cf5a1811faf4b0
SSDEEP

6144:1IMYsG0EB52fG/LvDynga3Hm3271Cn0ZH3PWv+uwVYVt/GwK+GzYmtnDURdrwSkH:zEP2fG/LvDyngkDUnrgpyxr2vD3

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
3132	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
112	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a953b55de74bc09ad95e4a44066f3040.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a953b55de74bc09ad95e4a44066f3040.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a953b55de74bc09ad95e4a44066f3040 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a953b55de74bc09ad95e4a44066f3040 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\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 behavior: EnumeratesProcesses 6 IoCs

pid	Process
2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
3132	server.exe
3132	server.exe
3132	server.exe

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
Token: SeDebugPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe
Token: 33	3132	server.exe
Token: SeIncBasePriorityPrivilege	3132	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 3132	2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe	84
PID 2952 wrote to memory of 3132	2952	49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe	84
PID 3132 wrote to memory of 112	3132	server.exe	87
PID 3132 wrote to memory of 112	3132	server.exe	87

C:\Users\Admin\AppData\Local\Temp\49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe
"C:\Users\Admin\AppData\Local\Temp\49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3132
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:112

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\Local\Temp\server.exe

Filesize
282KB

MD5
033d49d505d4acf1eabdd90d1d12b596

SHA1
d626e26ebe19098e0ffe73a3be6449229c9d3cd3

SHA256
49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f

SHA512
d42a1282c3eea5402fcb1c1ae26cbed194b7c1775faf56c9fec92b61c25ab627438eb007fdffd25ac2dedded251c6ad323f8a153b74a2a9f10cf5a1811faf4b0

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

Filesize
282KB

MD5
033d49d505d4acf1eabdd90d1d12b596

SHA1
d626e26ebe19098e0ffe73a3be6449229c9d3cd3

SHA256
49a18048871592cf80308cd440394bb0b8c7f0edf005b14b24160d579236773f

SHA512
d42a1282c3eea5402fcb1c1ae26cbed194b7c1775faf56c9fec92b61c25ab627438eb007fdffd25ac2dedded251c6ad323f8a153b74a2a9f10cf5a1811faf4b0

Download Submit
memory/2952-132-0x00007FFE175D0000-0x00007FFE18006000-memory.dmp

Filesize
10.2MB

Download
memory/3132-136-0x00007FFE175D0000-0x00007FFE18006000-memory.dmp

Filesize
10.2MB

Download

Analysis

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