njrat | ef5c02c221b5cb992728758e29195115a8f5481cf9ca5072a0616f95d00a362c

General

Target

5556.rar.exe
Size

23KB
MD5

475813f4cabffe076aefbd618a982512
SHA1

e2febca085bd5f5ac9aa2313bab17b4565a4024b
SHA256

ef5c02c221b5cb992728758e29195115a8f5481cf9ca5072a0616f95d00a362c
SHA512

5b253580f9147ca689c076b8f044e26ae37d5a2575c3fd02ec8e67c12cd273ebcc2c31c5631608340ae2d78f1dbe17f128909d4354118b4ef74ba27660c9ca76
SSDEEP

384:hFHuitNFzA0yUVky2n0Yxga06agwXh/+f1mRvR6JZlbw8hqIusZzZZa:a6F2RNnB+Rpcnuj

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

C2

188.212.158.75:5556

Mutex

e67ceec44f16fc357df593d15ca3e96b

Attributes

reg_key
e67ceec44f16fc357df593d15ca3e96b
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
2704	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e67ceec44f16fc357df593d15ca3e96b.exe	lsass.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e67ceec44f16fc357df593d15ca3e96b.exe	lsass.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	lsass.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	5556.rar.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\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\e67ceec44f16fc357df593d15ca3e96b = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\" .."	lsass.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\e67ceec44f16fc357df593d15ca3e96b = "\"C:\\Users\\Admin\\AppData\\Roaming\\lsass.exe\" .."	lsass.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

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	5556.rar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lsass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe
Token: 33	2380	lsass.exe
Token: SeIncBasePriorityPrivilege	2380	lsass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2380	2124	5556.rar.exe	31
PID 2124 wrote to memory of 2380	2124	5556.rar.exe	31
PID 2124 wrote to memory of 2380	2124	5556.rar.exe	31
PID 2124 wrote to memory of 2380	2124	5556.rar.exe	31
PID 2380 wrote to memory of 2704	2380	lsass.exe	32
PID 2380 wrote to memory of 2704	2380	lsass.exe	32
PID 2380 wrote to memory of 2704	2380	lsass.exe	32
PID 2380 wrote to memory of 2704	2380	lsass.exe	32

C:\Users\Admin\AppData\Local\Temp\5556.rar.exe
"C:\Users\Admin\AppData\Local\Temp\5556.rar.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Roaming\lsass.exe
  "C:\Users\Admin\AppData\Roaming\lsass.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\lsass.exe" "lsass.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2704

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

System Information Discovery

1

T1082

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\Roaming\lsass.exe

Filesize
23KB

MD5
475813f4cabffe076aefbd618a982512

SHA1
e2febca085bd5f5ac9aa2313bab17b4565a4024b

SHA256
ef5c02c221b5cb992728758e29195115a8f5481cf9ca5072a0616f95d00a362c

SHA512
5b253580f9147ca689c076b8f044e26ae37d5a2575c3fd02ec8e67c12cd273ebcc2c31c5631608340ae2d78f1dbe17f128909d4354118b4ef74ba27660c9ca76

Download Submit
memory/2124-0-0x0000000074A31000-0x0000000074A32000-memory.dmp

Filesize
4KB

Download
memory/2124-1-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2124-2-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2124-11-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2380-10-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2380-13-0x0000000074A30000-0x0000000074FDB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads