njrat | 08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 01:38

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General

Target

08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.exe
Size

67KB
MD5

66b4be0d76030c04d038d4eebeef2840
SHA1

6bc2264465c19831abc465c1858885adef57ad1d
SHA256

08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827
SHA512

f83cd099db7d8c140322f9d2de6792d66246213b942c1b1542954f6f99d4c7686f7b960ded42375d093826298676eeaaf6aa9cb68b48c2f0b96cd9e7391615fb
SSDEEP

1536:+WVFvTccWkWRxTvA/7yHL4RSk9thiVrZE/7gKjM:+QTccWbTIur4Y6MVrC/VQ

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
4828	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
444	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	08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.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 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe
Token: 33	4828	server.exe
Token: SeIncBasePriorityPrivilege	4828	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 4828	4740	08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.exe	83
PID 4740 wrote to memory of 4828	4740	08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.exe	83
PID 4828 wrote to memory of 444	4828	server.exe	87
PID 4828 wrote to memory of 444	4828	server.exe	87

C:\Users\Admin\AppData\Local\Temp\08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.exe
"C:\Users\Admin\AppData\Local\Temp\08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- 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:4828
- - 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:444

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

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\server.exe

Filesize
67KB

MD5
66b4be0d76030c04d038d4eebeef2840

SHA1
6bc2264465c19831abc465c1858885adef57ad1d

SHA256
08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827

SHA512
f83cd099db7d8c140322f9d2de6792d66246213b942c1b1542954f6f99d4c7686f7b960ded42375d093826298676eeaaf6aa9cb68b48c2f0b96cd9e7391615fb

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

Filesize
67KB

MD5
66b4be0d76030c04d038d4eebeef2840

SHA1
6bc2264465c19831abc465c1858885adef57ad1d

SHA256
08a49749587943bcd5c8253c71160271a7c4e8fa70dfecb8de768db62d7ba827

SHA512
f83cd099db7d8c140322f9d2de6792d66246213b942c1b1542954f6f99d4c7686f7b960ded42375d093826298676eeaaf6aa9cb68b48c2f0b96cd9e7391615fb

Download Submit
memory/4740-132-0x00007FFC46360000-0x00007FFC46D96000-memory.dmp

Filesize
10.2MB

Download
memory/4828-136-0x00007FFC46390000-0x00007FFC46DC6000-memory.dmp

Filesize
10.2MB

Download