njrat | ae89a0e3b406cd473712df9c32363a0871611d09b411120f07d0836e3c64e5b1

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 16:36

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General

Target

x4.exe
Size

54KB
MD5

f01403f4fc9c0727876a46568faee2a5
SHA1

1323d3cd7517b50a52f774024af682decf3c3698
SHA256

48f2fc5866fcc8d9c02674e7fcb6e46f82aa94ccef260a885205c537c3a3ca44
SHA512

99c6fdd4aeadb54e699a2ef628b2c1e44c9bd02c031399dd9d62e1c256e974829668b0cef33c84493dc6fa83bd0ab70eabf975b89b58cdce6aa21650e2d56cef
SSDEEP

768:gVXZuIZ2Eslt0g5X3SY3qZJSNDxWQG35bmaePD5Pvp2XXJdxIEpmag:gVB1Gt0g5SYSG9WQcGDYX3xIEpmag

Score

10^/10

njrat victim discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

<- NjRAT 0.7d Horror Edition ->

Botnet

Victim

limited-architect.gl.at.ply.gg:52522

Mutex

e61d751939442896523a0628facf1d34

Attributes

reg_key
e61d751939442896523a0628facf1d34
splitter
Y262SUCZ4UJJ

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e61d751939442896523a0628facf1d34.exe	x4.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e61d751939442896523a0628facf1d34.exe	x4.exe

Executes dropped EXE 2 IoCs

pid	Process
1956	x4.exe
540	x4.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\e61d751939442896523a0628facf1d34 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\x4.exe\" .."	x4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\e61d751939442896523a0628facf1d34 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\x4.exe\" .."	x4.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	x4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	x4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	x4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2176	taskkill.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2856	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe
2364	x4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2364	x4.exe

Suspicious use of AdjustPrivilegeToken 40 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	x4.exe
Token: SeDebugPrivilege	2176	taskkill.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: SeDebugPrivilege	1956	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: SeDebugPrivilege	540	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe
Token: 33	2364	x4.exe
Token: SeIncBasePriorityPrivilege	2364	x4.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2764	2364	x4.exe	30
PID 2364 wrote to memory of 2764	2364	x4.exe	30
PID 2364 wrote to memory of 2764	2364	x4.exe	30
PID 2364 wrote to memory of 2764	2364	x4.exe	30
PID 2364 wrote to memory of 2836	2364	x4.exe	32
PID 2364 wrote to memory of 2836	2364	x4.exe	32
PID 2364 wrote to memory of 2836	2364	x4.exe	32
PID 2364 wrote to memory of 2836	2364	x4.exe	32
PID 2364 wrote to memory of 2856	2364	x4.exe	34
PID 2364 wrote to memory of 2856	2364	x4.exe	34
PID 2364 wrote to memory of 2856	2364	x4.exe	34
PID 2364 wrote to memory of 2856	2364	x4.exe	34
PID 2364 wrote to memory of 2432	2364	x4.exe	36
PID 2364 wrote to memory of 2432	2364	x4.exe	36
PID 2364 wrote to memory of 2432	2364	x4.exe	36
PID 2364 wrote to memory of 2432	2364	x4.exe	36
PID 2432 wrote to memory of 2176	2432	cmd.exe	38
PID 2432 wrote to memory of 2176	2432	cmd.exe	38
PID 2432 wrote to memory of 2176	2432	cmd.exe	38
PID 2432 wrote to memory of 2176	2432	cmd.exe	38
PID 3008 wrote to memory of 1956	3008	taskeng.exe	41
PID 3008 wrote to memory of 1956	3008	taskeng.exe	41
PID 3008 wrote to memory of 1956	3008	taskeng.exe	41
PID 3008 wrote to memory of 1956	3008	taskeng.exe	41
PID 3008 wrote to memory of 540	3008	taskeng.exe	42
PID 3008 wrote to memory of 540	3008	taskeng.exe	42
PID 3008 wrote to memory of 540	3008	taskeng.exe	42
PID 3008 wrote to memory of 540	3008	taskeng.exe	42

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2764	attrib.exe

C:\Users\Admin\AppData\Local\Temp\x4.exe
"C:\Users\Admin\AppData\Local\Temp\x4.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\attrib.exe
  attrib +h "C:\Users\Admin\AppData\Local\Temp\x4.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2764
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /delete /tn CleanSweepCheck /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /sc minute /mo 1 /tn CleanSweepCheck /tr C:\Users\Admin\AppData\Local\Temp\x4.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2856
- C:\Windows\SysWOW64\cmd.exe
  cmd /c taskkill /f /im Wireshark.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2176

C:\Windows\system32\taskeng.exe
taskeng.exe {757C4633-BCB9-4E40-9B0E-40CAA701B7CC} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\x4.exe
  C:\Users\Admin\AppData\Local\Temp\x4.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1956
- C:\Users\Admin\AppData\Local\Temp\x4.exe
  C:\Users\Admin\AppData\Local\Temp\x4.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\x4.exe

Filesize
54KB

MD5
f01403f4fc9c0727876a46568faee2a5

SHA1
1323d3cd7517b50a52f774024af682decf3c3698

SHA256
48f2fc5866fcc8d9c02674e7fcb6e46f82aa94ccef260a885205c537c3a3ca44

SHA512
99c6fdd4aeadb54e699a2ef628b2c1e44c9bd02c031399dd9d62e1c256e974829668b0cef33c84493dc6fa83bd0ab70eabf975b89b58cdce6aa21650e2d56cef

Download Submit
memory/2364-0-0x0000000074891000-0x0000000074892000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-4-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-6-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-7-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download