njrat | c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832

Analysis

max time kernel
120s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 01:46

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General

Target

c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
Size

172KB
MD5

261848a51883c136a6c377f9e3829e70
SHA1

64280ed890cb9fe4d241626f85e8e02a59c04973
SHA256

c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832
SHA512

b74c7a2f8142703bbd2717faf5222dd8caf9adb22b9e54124bbe3e0e61eeeca849f730cdccd616572868c0e3ea3c79181ef6a5d8aee1dfc48e9642b582ba44ef
SSDEEP

3072:UVqoCl/YgjxEufVU0TbTyDDalR5n93273/+yJKi:UsLqdufVUNDa9932aA

Score

10^/10

njrat paket discovery evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

pakEt

condition-clearance.gl.at.ply.gg:7070

Mutex

9d3a575fdcc2dd1782d18ac5655a8b28

Attributes

reg_key
9d3a575fdcc2dd1782d18ac5655a8b28
splitter
|'|'|

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe

Executes dropped EXE 7 IoCs

pid	Process
5080	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
2636	icsys.icn.exe
5076	explorer.exe
2560	spoolsv.exe
1068	svchost.exe
4608	svchost.exe
4700	spoolsv.exe

Adds Run key to start application 2 TTPs 4 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\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.exe	explorer.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
File created	C:\Windows\svchost.exe	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
File opened for modification	C:\Windows\svchost.exe	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe

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 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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icsys.icn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
2636	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
5076	explorer.exe
4608	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1068	svchost.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
2636	icsys.icn.exe
2636	icsys.icn.exe
5076	explorer.exe
5076	explorer.exe
2560	spoolsv.exe
2560	spoolsv.exe
1068	svchost.exe
1068	svchost.exe
4608	svchost.exe
4608	svchost.exe
4700	spoolsv.exe
4700	spoolsv.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 5080	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	82
PID 2328 wrote to memory of 5080	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	82
PID 2328 wrote to memory of 5080	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	82
PID 2328 wrote to memory of 2636	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	83
PID 2328 wrote to memory of 2636	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	83
PID 2328 wrote to memory of 2636	2328	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe	83
PID 2636 wrote to memory of 5076	2636	icsys.icn.exe	84
PID 2636 wrote to memory of 5076	2636	icsys.icn.exe	84
PID 2636 wrote to memory of 5076	2636	icsys.icn.exe	84
PID 5076 wrote to memory of 2560	5076	explorer.exe	85
PID 5076 wrote to memory of 2560	5076	explorer.exe	85
PID 5076 wrote to memory of 2560	5076	explorer.exe	85
PID 5080 wrote to memory of 1068	5080	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe	86
PID 5080 wrote to memory of 1068	5080	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe	86
PID 5080 wrote to memory of 1068	5080	c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe	86
PID 2560 wrote to memory of 4608	2560	spoolsv.exe	87
PID 2560 wrote to memory of 4608	2560	spoolsv.exe	87
PID 2560 wrote to memory of 4608	2560	spoolsv.exe	87
PID 4608 wrote to memory of 4700	4608	svchost.exe	88
PID 4608 wrote to memory of 4700	4608	svchost.exe	88
PID 4608 wrote to memory of 4700	4608	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe
"C:\Users\Admin\AppData\Local\Temp\c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2328
- \??\c:\users\admin\appdata\local\temp\c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
  c:\users\admin\appdata\local\temp\c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5080
- - C:\Windows\svchost.exe
    "C:\Windows\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1068
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2636
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5076
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2560
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Adds Run key to start application
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4608
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:4700

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832n.exe

Filesize
37KB

MD5
e20a459e155e9860e8a00f4d4a6015bf

SHA1
982fe6b24779fa4a64a154947aca4d5615a7af86

SHA256
d6ee68c0057fd95a29a2f112c19cb556837eff859071827bc5d37069742d96cc

SHA512
381a3c27328e30a06125c2fa45334ca84aaff7904afb032e4fd6dec1474179787f0d87e93804b7b79e74987e2977ea19d64de05872c7f4fe1ca818199ed30d02

Download Submit
C:\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
edc7efb97bad94e5181e078187289764

SHA1
a07df0cea2cafbd5c017ae77469158fefdd9798a

SHA256
dd2ff746f7abdb1219100713a2adb1ba577099a2f930130a01ef760f437c42c2

SHA512
78df16d4c8fe85a09a0d97d3f98508e9cb4fa22d71744bad09d31f82bfc6f084ed21638815821542ac5d4868c013454adbc9cec1f033a1be1502fd8b80c43b38

Download Submit
C:\Windows\Resources\Themes\icsys.icn.exe

Filesize
135KB

MD5
1b8c07e11c52ef2fb9ed40e8e942ee9f

SHA1
e65730e6bb319915563b321c20bc6edfdc0c83fd

SHA256
e2ab3cef99cb3c6a9f27db39bf73b828e6580f4200fb389c3f9950693d9ab7af

SHA512
ff7e316e231f77dbb5dd88b3d5f37848b916f0085bb6a85565f3551020637bbb5598df4dbab5d627a652fc1fa453dac6350410320d2503e2b209f6f85fbe674e

Download Submit
C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
8c861f680a0cf760ac67dba543d533e3

SHA1
dde4b372ead2c401feb22ffc80679b8e6464b705

SHA256
b882dca8a424d53928fe8b35853cdb2faa8985741b29071f17b7e5e177bf6ee7

SHA512
52800f0e665c6000def1d6750cc9eb6e6cb837a588ce44cf71ddc64c4218827d9c21ae811aa8874b895c395e948460a56328deaac2120be681ff7d0596a83bfd

Download Submit
C:\Windows\Resources\svchost.exe

Filesize
135KB

MD5
99175c8b052097d2fda9e437425e5f28

SHA1
07e1bff230f8717de4c561e3e691934dd6f7bad7

SHA256
0a0e950c095461de61c667d28b245a8a1011a385b1c1b91235d8289b37a23f84

SHA512
ac6430e48a33a6361b277a9286f9935b59e13e3cdf04ade28e8092a49d5f36240084ed63879feb49dde92d5ecb4964991f3482a66dc0d83829055bcf51f75b4d

Download Submit
C:\Windows\svchost.exe

Filesize
172KB

MD5
261848a51883c136a6c377f9e3829e70

SHA1
64280ed890cb9fe4d241626f85e8e02a59c04973

SHA256
c3d4926f7dc1a953eb062f469e7c6e72432e2872e38e125c422f1240a8de3832

SHA512
b74c7a2f8142703bbd2717faf5222dd8caf9adb22b9e54124bbe3e0e61eeeca849f730cdccd616572868c0e3ea3c79181ef6a5d8aee1dfc48e9642b582ba44ef

Download Submit
memory/1068-56-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2328-69-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2328-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2560-66-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2636-68-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4608-57-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4608-71-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4700-67-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

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memory/5076-70-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5080-11-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

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memory/5080-9-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

Filesize
4KB

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memory/5080-61-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

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memory/5080-10-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

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memory/5080-23-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

Filesize
4KB

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memory/5080-24-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

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