njrat | ae89a0e3b406cd473712df9c32363a0871611d09b411120f07d0836e3c64e5b1

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e61d751939442896523a0628facf1d34.exe	x4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e61d751939442896523a0628facf1d34.exe	x4.exe

Executes dropped EXE 2 IoCs

pid	Process
4904	x4.exe
1616	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-1-5-21-523280732-2327480845-3730041215-1000\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	x4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
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

Kills process with taskkill 1 IoCs

evasion

pid	Process
736	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
684	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe
4696	x4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4696	x4.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	4696	x4.exe
Token: SeDebugPrivilege	736	taskkill.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: SeDebugPrivilege	4904	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: SeDebugPrivilege	1616	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe
Token: 33	4696	x4.exe
Token: SeIncBasePriorityPrivilege	4696	x4.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 4928	4696	x4.exe	90
PID 4696 wrote to memory of 4928	4696	x4.exe	90
PID 4696 wrote to memory of 4928	4696	x4.exe	90
PID 4696 wrote to memory of 2228	4696	x4.exe	92
PID 4696 wrote to memory of 2228	4696	x4.exe	92
PID 4696 wrote to memory of 2228	4696	x4.exe	92
PID 4696 wrote to memory of 684	4696	x4.exe	94
PID 4696 wrote to memory of 684	4696	x4.exe	94
PID 4696 wrote to memory of 684	4696	x4.exe	94
PID 4696 wrote to memory of 1280	4696	x4.exe	96
PID 4696 wrote to memory of 1280	4696	x4.exe	96
PID 4696 wrote to memory of 1280	4696	x4.exe	96
PID 1280 wrote to memory of 736	1280	cmd.exe	98
PID 1280 wrote to memory of 736	1280	cmd.exe	98
PID 1280 wrote to memory of 736	1280	cmd.exe	98

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4928	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:4696
- 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:4928
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /delete /tn CleanSweepCheck /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2228
- 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:684
- C:\Windows\SysWOW64\cmd.exe
  cmd /c taskkill /f /im Wireshark.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - 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:736

C:\Users\Admin\AppData\Local\Temp\x4.exe
C:\Users\Admin\AppData\Local\Temp\x4.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4904

C:\Users\Admin\AppData\Local\Temp\x4.exe
C:\Users\Admin\AppData\Local\Temp\x4.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1616

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\Microsoft\CLR_v2.0_32\UsageLogs\x4.exe.log

Filesize
319B

MD5
da4fafeffe21b7cb3a8c170ca7911976

SHA1
50ef77e2451ab60f93f4db88325b897d215be5ad

SHA256
7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7

SHA512
0bc24b69460f31a0ebc0628b99908d818ee85feb7e4b663271d9375b30cced0cd55a0bbf8edff1281a4c886ddf4476ffc989c283069cdcb1235ffcb265580fc6

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

Filesize
54KB

MD5
f01403f4fc9c0727876a46568faee2a5

SHA1
1323d3cd7517b50a52f774024af682decf3c3698

SHA256
48f2fc5866fcc8d9c02674e7fcb6e46f82aa94ccef260a885205c537c3a3ca44

SHA512
99c6fdd4aeadb54e699a2ef628b2c1e44c9bd02c031399dd9d62e1c256e974829668b0cef33c84493dc6fa83bd0ab70eabf975b89b58cdce6aa21650e2d56cef

Download Submit
memory/4696-0-0x00000000746F2000-0x00000000746F3000-memory.dmp

Filesize
4KB

Download
memory/4696-1-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4696-2-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4696-6-0x00000000746F2000-0x00000000746F3000-memory.dmp

Filesize
4KB

Download
memory/4696-7-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4696-8-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4904-11-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4904-10-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download
memory/4904-13-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download