njrat | 1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d

General

Target

1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe
Size

370KB
MD5

0b6b5bdacad8d29067a7108cc6b246c8
SHA1

3fd6362468c4cf4c4b38823bc8635da83970a706
SHA256

1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d
SHA512

046d7948b3f35f603b69a1882d679163886726d02b6fa9890024c19be1a02a0d7727a85aa919e4d8ba898a70bea994e10d1501fff35549e8da55ff0d7917889c
SSDEEP

6144:4h3bAQY17xzVdJcRlbMe8lLmDpwXw73g:4hLAP95VwlbMe+K

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

Njrat family
njrat
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
3580	netsh.exe

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/1772-1-0x0000000000510000-0x0000000000572000-memory.dmp	net_reactor

Checks computer location settings 2 TTPs 2 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	.exe

Executes dropped EXE 2 IoCs

pid	Process
4616	.exe
4460	server.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3ad078b94fd440dda2867a26a10d35b4 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3ad078b94fd440dda2867a26a10d35b4 = "\"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).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe
Token: 33	4460	server.exe
Token: SeIncBasePriorityPrivilege	4460	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 4616	1772	1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe	83
PID 1772 wrote to memory of 4616	1772	1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe	83
PID 1772 wrote to memory of 4616	1772	1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe	83
PID 4616 wrote to memory of 4460	4616	.exe	85
PID 4616 wrote to memory of 4460	4616	.exe	85
PID 4616 wrote to memory of 4460	4616	.exe	85
PID 4460 wrote to memory of 3580	4460	server.exe	92
PID 4460 wrote to memory of 3580	4460	server.exe	92
PID 4460 wrote to memory of 3580	4460	server.exe	92

C:\Users\Admin\AppData\Local\Temp\1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe
"C:\Users\Admin\AppData\Local\Temp\1658d9c78eb90c73d9536b54f570c25087789d7dfb04f5c14bb132f57b38902d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\.exe
  "C:\Users\Admin\AppData\Local\Temp\.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4460
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:3580

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
23KB

MD5
e38b20945af0e23f1d24c52afef297b4

SHA1
f95356c26b3916e8df1e47b388cc0724fe3b08ea

SHA256
1806244bab802b7aa4c6013f1e6d37bd379e59123eb9f6d13fda6f790467e3c2

SHA512
3b580850ef50d77410619340af833542d8e7b632a785bca91b119090282a7b8f6069fe70cda3f8035a333d6dda77d3625f877f4340007150be75738ae2946350

Download Submit
memory/1772-3-0x0000000005070000-0x000000000510C000-memory.dmp

Filesize
624KB

Download
memory/1772-2-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/1772-4-0x0000000005820000-0x0000000005DC4000-memory.dmp

Filesize
5.6MB

Download
memory/1772-5-0x0000000005270000-0x0000000005302000-memory.dmp

Filesize
584KB

Download
memory/1772-1-0x0000000000510000-0x0000000000572000-memory.dmp

Filesize
392KB

Download
memory/1772-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/1772-33-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/1772-17-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/1772-28-0x00000000749C0000-0x0000000075170000-memory.dmp

Filesize
7.7MB

Download
memory/4460-31-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4460-34-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4460-29-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4460-30-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4616-15-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4616-27-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4616-16-0x0000000070710000-0x0000000070CC1000-memory.dmp

Filesize
5.7MB

Download
memory/4616-14-0x0000000070712000-0x0000000070713000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads