njrat | 2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468

General

Target

2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe
Size

81KB
MD5

7386700662176cbad09a78028ad0ec10
SHA1

1711b0cf8eb7d63b2acfff46c0b0c69efaaab2bc
SHA256

2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468
SHA512

0c0960abf7126998956bc50a86da810abae30c67e3a388bdc6549d44faa023b4a09e72a69fc8624dde300d5d7a05eeda6c52013d180a64e7a7334964d56ee0a3
SSDEEP

1536:62ny03fkUsFtDAjfuJuE1tnp5FDmLGESGBTUFOa:621PCPAjf8uEN4l+FOa

Score

10^/10

njrat evasion trojan

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1764	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2464	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	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe
File opened for modification	C:\Windows\assembly	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe
File created	C:\Windows\assembly\Desktop.ini	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.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	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe
Token: 33	1764	server.exe
Token: SeIncBasePriorityPrivilege	1764	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 1764	4900	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe	85
PID 4900 wrote to memory of 1764	4900	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe	85
PID 4900 wrote to memory of 1764	4900	2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe	85
PID 1764 wrote to memory of 2464	1764	server.exe	86
PID 1764 wrote to memory of 2464	1764	server.exe	86
PID 1764 wrote to memory of 2464	1764	server.exe	86

C:\Users\Admin\AppData\Local\Temp\2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe
"C:\Users\Admin\AppData\Local\Temp\2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

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
81KB

MD5
7386700662176cbad09a78028ad0ec10

SHA1
1711b0cf8eb7d63b2acfff46c0b0c69efaaab2bc

SHA256
2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468

SHA512
0c0960abf7126998956bc50a86da810abae30c67e3a388bdc6549d44faa023b4a09e72a69fc8624dde300d5d7a05eeda6c52013d180a64e7a7334964d56ee0a3

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

Filesize
81KB

MD5
7386700662176cbad09a78028ad0ec10

SHA1
1711b0cf8eb7d63b2acfff46c0b0c69efaaab2bc

SHA256
2b903e829950918b5b2ba6ed81fa19be2c5f8fa9934ee4c75bb278934a953468

SHA512
0c0960abf7126998956bc50a86da810abae30c67e3a388bdc6549d44faa023b4a09e72a69fc8624dde300d5d7a05eeda6c52013d180a64e7a7334964d56ee0a3

Download Submit
memory/1764-137-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/1764-139-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/4900-132-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/4900-136-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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