njrat | 0f33d4f78934cae61e579ccc3b376f822267bfb4d2bfdf51740695800f88d804

General

Target

JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe
Size

1.2MB
MD5

65b9d6e4d666e561164559c668fe1eb0
SHA1

cd250e21ff05dc7453e1046316355c5fbeeced67
SHA256

0f33d4f78934cae61e579ccc3b376f822267bfb4d2bfdf51740695800f88d804
SHA512

7d0071fe3b7e2e2e91e11537339e1344a96853625cd0753df0af0b4e9e69c4afce8db20773a2867a1fa68c4ece0ba8ba920761b80086350b5e116efa2a2a617e
SSDEEP

12288:PlcpiSYeriSVOaGTb17D+KHZnAJXtVW9RolEkcJXtVW9RolEk:PWpiSYeriuRG/xXaBCRBkcBCRBk

Score

10^/10

njrat embroidery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Embroidery

C2

127.0.0.1:1177

Mutex

6eae1dd70335f04d12053a454dffa1ba

Attributes

reg_key
6eae1dd70335f04d12053a454dffa1ba
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
3740	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	LocalLn_NczMWNT.exe

Executes dropped EXE 2 IoCs

pid	Process
3956	LocalLn_NczMWNT.exe
5036	emb.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6eae1dd70335f04d12053a454dffa1ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\emb.exe\" .."	emb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6eae1dd70335f04d12053a454dffa1ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\emb.exe\" .."	emb.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\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe
Token: 33	5036	emb.exe
Token: SeIncBasePriorityPrivilege	5036	emb.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 3956	1848	JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe	83
PID 1848 wrote to memory of 3956	1848	JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe	83
PID 3956 wrote to memory of 5036	3956	LocalLn_NczMWNT.exe	85
PID 3956 wrote to memory of 5036	3956	LocalLn_NczMWNT.exe	85
PID 5036 wrote to memory of 3740	5036	emb.exe	92
PID 5036 wrote to memory of 3740	5036	emb.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65b9d6e4d666e561164559c668fe1eb0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Users\Admin\AppData\LocalLn_NczMWNT.exe
  "C:\Users\Admin\AppData\LocalLn_NczMWNT.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3956
- - C:\Users\Admin\AppData\Local\Temp\emb.exe
    "C:\Users\Admin\AppData\Local\Temp\emb.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5036
  - - C:\Windows\SYSTEM32\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\emb.exe" "emb.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      PID:3740

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLn_NczMWNT.exe

Filesize
664KB

MD5
a1f11e281e3adb290ace3becf1f07144

SHA1
5cfca18b663ccf418efb5bda01601c7bf3ee8046

SHA256
f52be0a9b9b55de02fbe3dce324ee16b927632e9d5c60e9926ce523c7b5225a6

SHA512
b4445c6c8db9cbc18f50366b55ce56c3d03c691d62208bf596f7dcda5e898b30dc11a0db1f2e750ce3cde317f23b6347da54dfc0ea3490bc6cc9c05c31e55397

Download Submit
memory/1848-0-0x00007FFA81D15000-0x00007FFA81D16000-memory.dmp

Filesize
4KB

Download
memory/1848-1-0x00007FFA81A60000-0x00007FFA82401000-memory.dmp

Filesize
9.6MB

Download
memory/1848-3-0x00007FFA81A60000-0x00007FFA82401000-memory.dmp

Filesize
9.6MB

Download
memory/1848-18-0x00007FFA81A60000-0x00007FFA82401000-memory.dmp

Filesize
9.6MB

Download
memory/3956-15-0x00007FFA7F663000-0x00007FFA7F665000-memory.dmp

Filesize
8KB

Download
memory/3956-17-0x0000000000B10000-0x0000000000BBC000-memory.dmp

Filesize
688KB

Download
memory/3956-19-0x000000001B7B0000-0x000000001B842000-memory.dmp

Filesize
584KB

Download
memory/3956-20-0x00007FFA7F660000-0x00007FFA80121000-memory.dmp

Filesize
10.8MB

Download
memory/3956-21-0x000000001C2C0000-0x000000001C33A000-memory.dmp

Filesize
488KB

Download
memory/3956-34-0x00007FFA7F660000-0x00007FFA80121000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads