njrat | f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3

General

Target

f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe
Size

40KB
MD5

ab9227ef1d109dfd789c9bdeb46605a0
SHA1

a9f1569c151195bfb32b2db0625085453aab69c3
SHA256

f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3
SHA512

6e204f7268af6df6f11e7b17ff9692a980d5abbfa23c7663e9779e7bceafc1cd22988b9163991c1916542e8c6ddd329c27b0e992e4b2f83d08d378131d1b8ac7

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

Processes:

system.exe

pid process

916 system.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
916	system.exe

Drops startup file 2 IoCs

Processes:

system.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c2f2fb4452e56e37a167c777bd338296.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c2f2fb4452e56e37a167c777bd338296.exe	system.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

system.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\c2f2fb4452e56e37a167c777bd338296 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\c2f2fb4452e56e37a167c777bd338296 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .."	system.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

Processes:

system.exe

description	pid	process
Token: SeDebugPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe
Token: 33	916	system.exe
Token: SeIncBasePriorityPrivilege	916	system.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exesystem.exe

description	pid	process	target process
PID 2660 wrote to memory of 916	2660	f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe	system.exe
PID 2660 wrote to memory of 916	2660	f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe	system.exe
PID 2660 wrote to memory of 916	2660	f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe	system.exe
PID 916 wrote to memory of 3600	916	system.exe	netsh.exe
PID 916 wrote to memory of 3600	916	system.exe	netsh.exe
PID 916 wrote to memory of 3600	916	system.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe
"C:\Users\Admin\AppData\Local\Temp\f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Users\Admin\AppData\Roaming\system.exe
  "C:\Users\Admin\AppData\Roaming\system.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:916
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\system.exe" "system.exe" ENABLE
    3⤵
    PID:3600

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
ab9227ef1d109dfd789c9bdeb46605a0

SHA1
a9f1569c151195bfb32b2db0625085453aab69c3

SHA256
f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3

SHA512
6e204f7268af6df6f11e7b17ff9692a980d5abbfa23c7663e9779e7bceafc1cd22988b9163991c1916542e8c6ddd329c27b0e992e4b2f83d08d378131d1b8ac7

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

MD5
ab9227ef1d109dfd789c9bdeb46605a0

SHA1
a9f1569c151195bfb32b2db0625085453aab69c3

SHA256
f7131d238936a8c24ce71706bb8050338623377f4189a106b3361fd1ffc6cac3

SHA512
6e204f7268af6df6f11e7b17ff9692a980d5abbfa23c7663e9779e7bceafc1cd22988b9163991c1916542e8c6ddd329c27b0e992e4b2f83d08d378131d1b8ac7

Download Submit
memory/916-121-0x0000000000E50000-0x0000000000E51000-memory.dmp

Filesize
4KB

Download
memory/2660-118-0x00000000003F0000-0x0000000000400000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads