njrat | 4ab6bea1ec09fdb63490036d754206d66b5ed12d2242519e0b24e41ed07a6c89

General

Target

Kaspersky.exe
Size

93KB
MD5

ab54e6c36ce4c5f741468fad657919e5
SHA1

39c0e66f651549f517b87bf1b8932f8e91dbeb23
SHA256

4ab6bea1ec09fdb63490036d754206d66b5ed12d2242519e0b24e41ed07a6c89
SHA512

a65052fbaa1f13d7d0fe1afb21b3921eaf4b2504170d6834b59165cb1636221d02bd16df81a972a2eb12c9238362a93be08541224da6b01efc4480610a10b4cc
SSDEEP

768:zY37g530YTXspgM0m2zGjpyDtdXWuDtXfLWh2XxrjEtCdnl2pi1Rz4Rk3ssGdpH3:agZ0AA0mT1mrWgLljEwzGi1dDkDHgS

Score

10^/10

njrat pupsik defense_evasion discovery persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Pupsik

C2

hakim32.ddns.net:2000

0.tcp.eu.ngrok.io:18053

Mutex

0c4b3e15737b6964ecad2024f0474129

Attributes

reg_key
0c4b3e15737b6964ecad2024f0474129
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Disables Task Manager via registry modification
defense_evasion

Modifies Windows Firewall 2 TTPs 3 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3020	netsh.exe
2864	netsh.exe
2716	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2528	server.exe

Loads dropped DLL 2 IoCs

pid	Process
1336	Kaspersky.exe
1336	Kaspersky.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
2	0.tcp.eu.ngrok.io

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 9 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
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
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Kaspersky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2528	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe
Token: 33	2528	server.exe
Token: SeIncBasePriorityPrivilege	2528	server.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2528	1336	Kaspersky.exe	30
PID 1336 wrote to memory of 2528	1336	Kaspersky.exe	30
PID 1336 wrote to memory of 2528	1336	Kaspersky.exe	30
PID 1336 wrote to memory of 2528	1336	Kaspersky.exe	30
PID 2528 wrote to memory of 2716	2528	server.exe	31
PID 2528 wrote to memory of 2716	2528	server.exe	31
PID 2528 wrote to memory of 2716	2528	server.exe	31
PID 2528 wrote to memory of 2716	2528	server.exe	31
PID 2528 wrote to memory of 2864	2528	server.exe	33
PID 2528 wrote to memory of 2864	2528	server.exe	33
PID 2528 wrote to memory of 2864	2528	server.exe	33
PID 2528 wrote to memory of 2864	2528	server.exe	33
PID 2528 wrote to memory of 3020	2528	server.exe	34
PID 2528 wrote to memory of 3020	2528	server.exe	34
PID 2528 wrote to memory of 3020	2528	server.exe	34
PID 2528 wrote to memory of 3020	2528	server.exe	34

C:\Users\Admin\AppData\Local\Temp\Kaspersky.exe
"C:\Users\Admin\AppData\Local\Temp\Kaspersky.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2716
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2864
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3020

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
112317d572ce0538d2d1b20d7f32170e

SHA1
c7f3714c4806b907bcff7f79aa1d1c9373b77d1e

SHA256
fd9e9a8be71786826787d6eb9aa28371d09b0515ddf0c19b082fe7bac57a88a9

SHA512
265dbebc83c74dc97770e650580b0321144990d133403bab2bc1de4618cde63dfd4fedfa56b5e4e259b510585db0f7a59042c356356c56bea3ac861d4be5337f

Download Submit
\Users\Admin\AppData\Local\Temp\server.exe

Filesize
93KB

MD5
ab54e6c36ce4c5f741468fad657919e5

SHA1
39c0e66f651549f517b87bf1b8932f8e91dbeb23

SHA256
4ab6bea1ec09fdb63490036d754206d66b5ed12d2242519e0b24e41ed07a6c89

SHA512
a65052fbaa1f13d7d0fe1afb21b3921eaf4b2504170d6834b59165cb1636221d02bd16df81a972a2eb12c9238362a93be08541224da6b01efc4480610a10b4cc

Download Submit
memory/1336-0-0x0000000074011000-0x0000000074012000-memory.dmp

Filesize
4KB

Download
memory/1336-1-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/1336-2-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/1336-14-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2528-15-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2528-16-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2528-19-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads