njrat | 559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707

General

Target

559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe
Size

23KB
MD5

4834daaa2464378474669c26607f8c55
SHA1

0798e7d96aaaa629c232ad4398a307e25013d585
SHA256

559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707
SHA512

20757819ff1eb2b63155bfbbc983e1e95e4bb0eff6aad703db6cb557f89c6ad26b48ae090367539219dab58b2bf8df2574c7dbde206b60e63c58e5b16d62386d
SSDEEP

384:tY324bcgPiJLQrfARGSRUJsbY6ZgvSMBD3tVmRvR6JZlbw8hqIusZzZo69:CL2s+tRdRpcnudG

Score

10^/10

njrat zayan1 evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

zayan1

C2

65.0.50.125:22158

Mutex

a4cbdc4b353efef9adf0da32b8aa4cb1

Attributes

reg_key
a4cbdc4b353efef9adf0da32b8aa4cb1
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1544	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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe

Executes dropped EXE 1 IoCs

pid	Process
3612	server33.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1392040655-2056082574-619088944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a4cbdc4b353efef9adf0da32b8aa4cb1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server33.exe\" .."	server33.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a4cbdc4b353efef9adf0da32b8aa4cb1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server33.exe\" .."	server33.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe
Token: 33	3612	server33.exe
Token: SeIncBasePriorityPrivilege	3612	server33.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 3612	640	559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe	96
PID 640 wrote to memory of 3612	640	559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe	96
PID 640 wrote to memory of 3612	640	559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe	96
PID 3612 wrote to memory of 1544	3612	server33.exe	97
PID 3612 wrote to memory of 1544	3612	server33.exe	97
PID 3612 wrote to memory of 1544	3612	server33.exe	97

C:\Users\Admin\AppData\Local\Temp\559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe
"C:\Users\Admin\AppData\Local\Temp\559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:640
- C:\Users\Admin\AppData\Local\Temp\server33.exe
  "C:\Users\Admin\AppData\Local\Temp\server33.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server33.exe" "server33.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server33.exe

Filesize
23KB

MD5
4834daaa2464378474669c26607f8c55

SHA1
0798e7d96aaaa629c232ad4398a307e25013d585

SHA256
559d282b0ba15515ba2b906da3d68f60ec4bcb0934d07d7e922f34909a378707

SHA512
20757819ff1eb2b63155bfbbc983e1e95e4bb0eff6aad703db6cb557f89c6ad26b48ae090367539219dab58b2bf8df2574c7dbde206b60e63c58e5b16d62386d

Download Submit
memory/640-0-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/640-1-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/640-2-0x0000000001180000-0x0000000001190000-memory.dmp

Filesize
64KB

Download
memory/640-12-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3612-13-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3612-14-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3612-15-0x00000000746B0000-0x0000000074C61000-memory.dmp

Filesize
5.7MB

Download
memory/3612-16-0x00000000014F0000-0x0000000001500000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads