njrat | 7cdc3aac4fd2cea887b0f9f0c3ef615d470b8dbec055efebce863d7fbf67d797

Analysis

max time kernel
16s
max time network
20s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 19:11

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General

Target

87301351de40852d96930b66553900ac_JaffaCakes118.exe
Size

648KB
MD5

87301351de40852d96930b66553900ac
SHA1

cf042b7fb2690e600a360adaf146873dd04c9f9a
SHA256

7cdc3aac4fd2cea887b0f9f0c3ef615d470b8dbec055efebce863d7fbf67d797
SHA512

616aab7bc673f804c6be6a7a7d521454c3ba895ae0bae5d4cfa5c16c080f29d13ff3315b191c86c2dea0b97462c54336c4b74f49f0ae10e72c4cfaad9f877bdf
SSDEEP

12288:2eFxHPvtS8ULd+mQb+mQwWhhhhrE6zTNhhhhhJsni7lhjPyTCp9h7ukziWy9EUKt:2sJPvJULd+mQb+mQwb6hhz9ESiWy9EFt

Score

10^/10

njrat hacked discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

v2.0

Botnet

HacKed

62.227.124.106:5552

Mutex

Windows

Attributes

reg_key
Windows
splitter
|-F-|

Signatures

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

Drops startup file 1 IoCs

Processes:

Regasm.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	Regasm.exe

Executes dropped EXE 2 IoCs

Processes:

stub.exePayload.exe

pid	Process
2244	stub.exe
2616	Payload.exe

Loads dropped DLL 2 IoCs

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exeRegasm.exe

pid	Process
2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe
2820	Regasm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Regasm.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Payload.exe"	Regasm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2540 set thread context of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exeRegasm.exePayload.exeattrib.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87301351de40852d96930b66553900ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payload.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exe

pid	Process
2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe
2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exe

description	pid	Process
Token: SeDebugPrivilege	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

87301351de40852d96930b66553900ac_JaffaCakes118.exestub.exeRegasm.exe

description	pid	Process	procid_target
PID 2540 wrote to memory of 2244	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	29
PID 2540 wrote to memory of 2244	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	29
PID 2540 wrote to memory of 2244	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	29
PID 2540 wrote to memory of 2244	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	29
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2100	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	30
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2540 wrote to memory of 2820	2540	87301351de40852d96930b66553900ac_JaffaCakes118.exe	31
PID 2244 wrote to memory of 1628	2244	stub.exe	32
PID 2244 wrote to memory of 1628	2244	stub.exe	32
PID 2244 wrote to memory of 1628	2244	stub.exe	32
PID 2820 wrote to memory of 2616	2820	Regasm.exe	33
PID 2820 wrote to memory of 2616	2820	Regasm.exe	33
PID 2820 wrote to memory of 2616	2820	Regasm.exe	33
PID 2820 wrote to memory of 2616	2820	Regasm.exe	33
PID 2820 wrote to memory of 2768	2820	Regasm.exe	35
PID 2820 wrote to memory of 2768	2820	Regasm.exe	35
PID 2820 wrote to memory of 2768	2820	Regasm.exe	35
PID 2820 wrote to memory of 2768	2820	Regasm.exe	35

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
2768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\87301351de40852d96930b66553900ac_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87301351de40852d96930b66553900ac_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Users\Admin\AppData\Local\Temp\stub.exe
  "C:\Users\Admin\AppData\Local\Temp\stub.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 396
    3⤵
    PID:1628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe"
  2⤵
  PID:2100
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Users\Admin\AppData\Local\Temp\Payload.exe
    "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2616
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h +r +s "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\Payload.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

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

Filesize
237KB

MD5
541a97219a94deaff2f3fad462ccaf0b

SHA1
aa76d0a36b0ce118c1bb5d81e4d3ad4cb39c9c12

SHA256
a8a01af1b5b629ce9c2866cba6459fc05052b77d70f3a93012ecc69e4ed209d6

SHA512
d18bf28d9b817c144ba5e9184a3f6d256ab990eb1b90b6be9a77b8edab158ab6e8b3b8047adb28385b5859474433b5270d29b9ef3389ed5b009ef0255d00d581

Download Submit
memory/2244-8-0x000007FEF594E000-0x000007FEF594F000-memory.dmp

Filesize
4KB

Download
memory/2244-10-0x000007FEF5690000-0x000007FEF602D000-memory.dmp

Filesize
9.6MB

Download
memory/2244-24-0x000007FEF594E000-0x000007FEF594F000-memory.dmp

Filesize
4KB

Download
memory/2244-28-0x000007FEF5690000-0x000007FEF602D000-memory.dmp

Filesize
9.6MB

Download
memory/2540-11-0x0000000004760000-0x00000000047A0000-memory.dmp

Filesize
256KB

Download
memory/2540-1-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/2540-9-0x0000000004EC0000-0x0000000004ED8000-memory.dmp

Filesize
96KB

Download
memory/2540-0-0x0000000073C4E000-0x0000000073C4F000-memory.dmp

Filesize
4KB

Download
memory/2616-36-0x0000000000250000-0x0000000000262000-memory.dmp

Filesize
72KB

Download
memory/2820-22-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-14-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-12-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-18-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-21-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2820-23-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download