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-1-5-21-1163522206-1469769407-485553996-1000\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
2252	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 2648 set thread context of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2252	powershell.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	powershell.exe
Token: SeDebugPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe
Token: 33	2940	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2940	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2252	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	31
PID 2648 wrote to memory of 2252	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	31
PID 2648 wrote to memory of 2252	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	31
PID 2648 wrote to memory of 2252	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	31
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33
PID 2648 wrote to memory of 2940	2648	d15caeecd93597cd7eaeccfeeea029f3_JaffaCakes118.exe	33

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:2648
- 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:2252
- 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:2940

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

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Downloads

memory/2252-9-0x000000006F771000-0x000000006F772000-memory.dmp

Filesize
4KB

Download
memory/2252-23-0x000000006F770000-0x000000006FD1B000-memory.dmp

Filesize
5.7MB

Download
memory/2252-22-0x000000006F770000-0x000000006FD1B000-memory.dmp

Filesize
5.7MB

Download
memory/2648-21-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2648-1-0x00000000008F0000-0x0000000000948000-memory.dmp

Filesize
352KB

Download
memory/2648-2-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2648-3-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2648-4-0x0000000000340000-0x0000000000350000-memory.dmp

Filesize
64KB

Download
memory/2648-5-0x0000000000350000-0x0000000000362000-memory.dmp

Filesize
72KB

Download
memory/2648-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/2940-18-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-13-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-12-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-11-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-10-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-16-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2940-20-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads