njrat | 4a16f3b48425de38d03e4c5f0d902ade1310b6f4ae413354b5a9949e7a895472

General

Target

eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe
Size

127KB
MD5

eccd8b676bdc00e2bca6837225d0de82
SHA1

fcd9d9f947250d807d25e47f71b1e4d33a722c94
SHA256

4a16f3b48425de38d03e4c5f0d902ade1310b6f4ae413354b5a9949e7a895472
SHA512

702621e4aee8f0fac1535798abdc1d8e3c731f8449ce2b6c14657fddeecafb8ca17d9fd587e7c7ac0c4668dba40b98a8b77508981d6f30c2d8478396131a19ff
SSDEEP

3072:jn9ZdSp05IdUts+n+mI8/EUWnBLeQiv04/LvN6OdA/b1M5X:jZQ0FtsM8UkL8vJLpdy2X

Score

10^/10

njrat 110821 discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

110821

C2

185.222.57.203:3333

Mutex

f30d07865704fc19fcdc80f3519e44b8

Attributes

reg_key
f30d07865704fc19fcdc80f3519e44b8
splitter
|'|'|

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
3452	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BetrWin.exe	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BetrWin.exe	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1668 set thread context of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2268	1668	WerFault.exe	82

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	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe
Token: 33	1896	RegSvcs.exe
Token: SeIncBasePriorityPrivilege	1896	RegSvcs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84
PID 1668 wrote to memory of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84
PID 1668 wrote to memory of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84
PID 1668 wrote to memory of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84
PID 1668 wrote to memory of 1896	1668	eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe	84
PID 1896 wrote to memory of 3452	1896	RegSvcs.exe	89
PID 1896 wrote to memory of 3452	1896	RegSvcs.exe	89
PID 1896 wrote to memory of 3452	1896	RegSvcs.exe	89

C:\Users\Admin\AppData\Local\Temp\eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eccd8b676bdc00e2bca6837225d0de82_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe" "RegSvcs.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 220
  2⤵
  - Program crash
  PID:2268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1668 -ip 1668
1⤵
PID:1992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

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

1

T1562.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1668-1-0x00000000007B9000-0x00000000007BB000-memory.dmp

Filesize
8KB

Download
memory/1896-3-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1896-7-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/1896-8-0x0000000002B20000-0x0000000002B2C000-memory.dmp

Filesize
48KB

Download
memory/1896-9-0x0000000007D50000-0x00000000082F4000-memory.dmp

Filesize
5.6MB

Download
memory/1896-10-0x0000000007840000-0x00000000078DC000-memory.dmp

Filesize
624KB

Download
memory/1896-11-0x0000000007A00000-0x0000000007A92000-memory.dmp

Filesize
584KB

Download
memory/1896-12-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/1896-13-0x0000000004D30000-0x0000000004D3A000-memory.dmp

Filesize
40KB

Download
memory/1896-14-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/1896-15-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads