njrat | 4d7f60f5f9cd63e753868459d0468b2925cdad0dc9dd53f889e662aa428efebf

General

Target

5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
Size

368KB
MD5

5022d0bbd3bc79e688f26ab39736a180
SHA1

2ff4398f048b9cfb5adb80b37672f33eea695d39
SHA256

4d7f60f5f9cd63e753868459d0468b2925cdad0dc9dd53f889e662aa428efebf
SHA512

93dd1c76d0579233817af20f495f836eb40e14253ccc048eccc932edc8731ab47443941b4d0fb66e6ef20f0e3ae8f7899d699a0b5a164d4f96b333d6d5c91524
SSDEEP

6144:JgRHAU4b69faujFyMM3mH1FE+yBFSDhvKHpuEskuTpUSZT3c:Jg12H3mH14BFSDhZEBuTpUw3

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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
4520	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9975759809ee69cc2d0562054d998149.exe	skype.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9975759809ee69cc2d0562054d998149.exe	skype.exe

Executes dropped EXE 3 IoCs

pid	Process
4524	Server.exe
4252	Crypter.exe
4376	skype.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9975759809ee69cc2d0562054d998149 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\skype.exe\" .."	skype.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9975759809ee69cc2d0562054d998149 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\skype.exe\" .."	skype.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.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	Crypter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe
4376	skype.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	skype.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 4524	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	85
PID 1724 wrote to memory of 4524	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	85
PID 1724 wrote to memory of 4524	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	85
PID 1724 wrote to memory of 4252	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	86
PID 1724 wrote to memory of 4252	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	86
PID 1724 wrote to memory of 4252	1724	5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe	86
PID 4524 wrote to memory of 4376	4524	Server.exe	88
PID 4524 wrote to memory of 4376	4524	Server.exe	88
PID 4524 wrote to memory of 4376	4524	Server.exe	88
PID 4376 wrote to memory of 4520	4376	skype.exe	89
PID 4376 wrote to memory of 4520	4376	skype.exe	89
PID 4376 wrote to memory of 4520	4376	skype.exe	89

C:\Users\Admin\AppData\Local\Temp\5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5022d0bbd3bc79e688f26ab39736a180_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Users\Admin\AppData\Local\Temp\skype.exe
    "C:\Users\Admin\AppData\Local\Temp\skype.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4376
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\skype.exe" "skype.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:4520
- C:\Users\Admin\AppData\Local\Temp\Crypter.exe
  "C:\Users\Admin\AppData\Local\Temp\Crypter.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4252

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\Crypter.exe

Filesize
884KB

MD5
dcfb7a85ade58b4541c18ca6e2acfc60

SHA1
f8fb98bbf730487d233e4d1e45a056db48b3067e

SHA256
c35b90eb66cc4c546ce2c373fe01679911576565a596bae16058bcb1bb8c020f

SHA512
439c42825c60366650e6bd6a811cac7bbaeac107c95f00d2e8190273a3cb9a971b7f3d9194f13fdc1f049ff34d1fbcdc9cac49f1fedc79a71c00913e1330ee14

Download Submit
C:\Users\Admin\AppData\Local\Temp\Server.exe

Filesize
28KB

MD5
333530806a51f2b7148063bbfc5fde0c

SHA1
471f3277d3734b5ab733cc191e7ce93a894f7ff9

SHA256
68b5ba555c551ccbcefb405dd5baf00f186f50c8678c0f389ba39506319f3c0f

SHA512
54117f2047b8b3c34c123dbc3ce6982da672d674b6240e3a8e71c04fc31b8e5c34bc3eb310c245098fa14b398507e7ceaf50d8043a048a333a3c2bcd532a2813

Download Submit
memory/1724-30-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/1724-1-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/1724-2-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/1724-3-0x000000001C430000-0x000000001C8FE000-memory.dmp

Filesize
4.8MB

Download
memory/1724-4-0x000000001C9B0000-0x000000001CA9E000-memory.dmp

Filesize
952KB

Download
memory/1724-13-0x00007FFDD3620000-0x00007FFDD3FC1000-memory.dmp

Filesize
9.6MB

Download
memory/1724-0-0x00007FFDD38D5000-0x00007FFDD38D6000-memory.dmp

Filesize
4KB

Download
memory/4252-28-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download
memory/4252-31-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4252-34-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4252-46-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download
memory/4252-47-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4524-29-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4524-32-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4524-35-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4524-44-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads