njrat | 887188ba86a5fbca79cf6f2338155cd48e79d23e1ada58e1c05cf666dd5f0eae

General

Target

d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe
Size

327KB
MD5

d15caeecd93597cd7eaeccfeeea029f3
SHA1

a9acaeeb1be459794c4cd3e9b6ab544314f21651
SHA256

887188ba86a5fbca79cf6f2338155cd48e79d23e1ada58e1c05cf666dd5f0eae
SHA512

2848b425aefd9806502fbbec0d6baf25fffc5bc4eeffaa9977e25eb18cc77021111c5a4b97fc01c6bde844eae5c4b98408d5ae7fa9719edb7d5825dfc4d1cd46
SSDEEP

6144:Vcd/f8fo3LL4TPH+v6SG8fE1iApjJ1MyppqlOtonBhvA+DK:1jJ15XsvA+DK

Score

10^/10

njrat nyan cat discovery execution persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

milla.publicvm.com:5050

Mutex

30b01a7462534b

Attributes

reg_key
30b01a7462534b
splitter
@!#&^%$

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\choma_exe = "C:\\Windows\\system32\\vlc\\vlce.exe"	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3728	powershell.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vlc\vlce.exe	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91

System Location Discovery: System Language Discovery 1 TTPs 3 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	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3728	powershell.exe
3728	powershell.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

description	pid	Process
Token: SeDebugPrivilege	3728	powershell.exe
Token: SeDebugPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe
Token: 33	2972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2972	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 3728	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	89
PID 1520 wrote to memory of 3728	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	89
PID 1520 wrote to memory of 3728	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	89
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91
PID 1520 wrote to memory of 2972	1520	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'choma_exe';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'choma_exe' -Value '"C:\Windows\system32\vlc\vlce.exe"' -PropertyType 'String'
  2⤵
  - Adds Run key to start application
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3728
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1hxosxqz.knm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1520-18-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/1520-3-0x00000000053C0000-0x0000000005452000-memory.dmp

Filesize
584KB

Download
memory/1520-4-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-1-0x0000000000950000-0x00000000009A8000-memory.dmp

Filesize
352KB

Download
memory/1520-6-0x0000000005600000-0x0000000005676000-memory.dmp

Filesize
472KB

Download
memory/1520-7-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/1520-10-0x0000000005390000-0x00000000053A2000-memory.dmp

Filesize
72KB

Download
memory/1520-9-0x0000000005370000-0x0000000005380000-memory.dmp

Filesize
64KB

Download
memory/1520-2-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/1520-11-0x00000000056A0000-0x00000000056BE000-memory.dmp

Filesize
120KB

Download
memory/1520-8-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-5-0x0000000005350000-0x000000000535A000-memory.dmp

Filesize
40KB

Download
memory/2972-20-0x00000000055B0000-0x000000000564C000-memory.dmp

Filesize
624KB

Download
memory/2972-17-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2972-46-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2972-45-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2972-13-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2972-44-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/3728-35-0x00000000055F0000-0x0000000005944000-memory.dmp

Filesize
3.3MB

Download
memory/3728-37-0x0000000005E00000-0x0000000005E4C000-memory.dmp

Filesize
304KB

Download
memory/3728-29-0x0000000004E60000-0x0000000004EC6000-memory.dmp

Filesize
408KB

Download
memory/3728-22-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/3728-23-0x0000000004DC0000-0x0000000004DE2000-memory.dmp

Filesize
136KB

Download
memory/3728-19-0x0000000004ED0000-0x00000000054F8000-memory.dmp

Filesize
6.2MB

Download
memory/3728-36-0x0000000005D70000-0x0000000005D8E000-memory.dmp

Filesize
120KB

Download
memory/3728-30-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/3728-38-0x0000000006310000-0x00000000063A6000-memory.dmp

Filesize
600KB

Download
memory/3728-39-0x0000000006290000-0x00000000062AA000-memory.dmp

Filesize
104KB

Download
memory/3728-40-0x00000000062E0000-0x0000000006302000-memory.dmp

Filesize
136KB

Download
memory/3728-43-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/3728-21-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/3728-15-0x0000000002470000-0x00000000024A6000-memory.dmp

Filesize
216KB

Download
memory/3728-16-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads