njrat | 82b0f65acaf8ba96c879a3d16acf525b60529a0fc9f02d7efad59c04653f0e97

General

Target

gzrulerv7.scr
Size

3.7MB
MD5

316d623d9437ddbd4ef778596750ea46
SHA1

f327c665c00a051b1675592802aa0d15552933cf
SHA256

82b0f65acaf8ba96c879a3d16acf525b60529a0fc9f02d7efad59c04653f0e97
SHA512

0f017e3a4e5e933c882c6b632bc27518352ffd60f3480362e8625bc95f20fea8990450fc4a9a6fe36a3eb3c17809aad78fb5b6ff03532261aeed7b4bc90bba9a
SSDEEP

49152:N7evlixp+SNMbqmuPomyp+Hnf/Mageqs6X/TkZWI9Ebddx:NCvZuPMoctq

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
4092	netsh.exe

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	gzrulerv7.scr
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	LocalMyVJmeDkpP.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\011264b060c8318a88c0a0aeca37affb.exe	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\011264b060c8318a88c0a0aeca37affb.exe	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
1148	LocalMyVJmeDkpP.exe
1420	LocalRdjadjWLES..exe
1952	svchost.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\011264b060c8318a88c0a0aeca37affb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\011264b060c8318a88c0a0aeca37affb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.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 opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LocalMyVJmeDkpP.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LocalRdjadjWLES..exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe
Token: 33	1952	svchost.exe
Token: SeIncBasePriorityPrivilege	1952	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3504 wrote to memory of 1148	3504	gzrulerv7.scr	82
PID 3504 wrote to memory of 1148	3504	gzrulerv7.scr	82
PID 3504 wrote to memory of 1148	3504	gzrulerv7.scr	82
PID 3504 wrote to memory of 1420	3504	gzrulerv7.scr	83
PID 3504 wrote to memory of 1420	3504	gzrulerv7.scr	83
PID 3504 wrote to memory of 1420	3504	gzrulerv7.scr	83
PID 1148 wrote to memory of 1952	1148	LocalMyVJmeDkpP.exe	88
PID 1148 wrote to memory of 1952	1148	LocalMyVJmeDkpP.exe	88
PID 1148 wrote to memory of 1952	1148	LocalMyVJmeDkpP.exe	88
PID 1952 wrote to memory of 4092	1952	svchost.exe	92
PID 1952 wrote to memory of 4092	1952	svchost.exe	92
PID 1952 wrote to memory of 4092	1952	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\gzrulerv7.scr
"C:\Users\Admin\AppData\Local\Temp\gzrulerv7.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\LocalMyVJmeDkpP.exe
  "C:\Users\Admin\AppData\LocalMyVJmeDkpP.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Users\Admin\AppData\Local\Temp\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1952
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\svchost.exe" "svchost.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:4092
- C:\Users\Admin\AppData\LocalRdjadjWLES..exe
  "C:\Users\Admin\AppData\LocalRdjadjWLES..exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1420

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\LocalMyVJmeDkpP.exe

Filesize
23KB

MD5
9ee77c8b76b55cab94d8b8600667217f

SHA1
81bb94ea21228e0060d69bb3fb062589a11e181c

SHA256
3f5fe8841c00697fb96bf1b6829657ac45e50d0403d98c8f13dcf9e3e108a503

SHA512
ecc145cb6a333191b3f146225b67c3fa66c1f8e0130627e133df587ede019e1f3d59ae8c06faa15f3b55272ed9ec798efde2f8a3e48e4b297e10893cfff1b65f

Download Submit
C:\Users\Admin\AppData\LocalRdjadjWLES..exe

Filesize
3.6MB

MD5
5e4a4f22da6b5155f39bbfb715efd648

SHA1
45c6f539846011a21e79432994fd30771ac1f3d3

SHA256
37549784d25c0a6f7b27f88b74c544f063872bf22c19554811ee6c7153a63bb4

SHA512
fb196c62fb8dfe964df163a43a2ffdb0259693e11242f6e8900c8856defa764d4be7b00344f1e4a711cce884e516d654ee98fdd034495dc89996130c5f904cfe

Download Submit
memory/1148-21-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/1148-37-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/1148-25-0x0000000075580000-0x0000000075B31000-memory.dmp

Filesize
5.7MB

Download
memory/1148-19-0x0000000075582000-0x0000000075583000-memory.dmp

Filesize
4KB

Download
memory/1420-27-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/1420-38-0x0000000000400000-0x000000000083E000-memory.dmp

Filesize
4.2MB

Download
memory/1420-39-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/1420-41-0x0000000000400000-0x000000000083E000-memory.dmp

Filesize
4.2MB

Download
memory/3504-5-0x00007FFFAEB30000-0x00007FFFAF4D1000-memory.dmp

Filesize
9.6MB

Download
memory/3504-26-0x00007FFFAEB30000-0x00007FFFAF4D1000-memory.dmp

Filesize
9.6MB

Download
memory/3504-0-0x00007FFFAEDE5000-0x00007FFFAEDE6000-memory.dmp

Filesize
4KB

Download
memory/3504-2-0x00007FFFAEB30000-0x00007FFFAF4D1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads