njrat | 55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40

General

Target

55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe
Size

23KB
MD5

b85baddd22e915e5e427ce5c04ed4b70
SHA1

9af824c64e4675e0e3ecd5bf7e3f4c9d158e7b0f
SHA256

55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40
SHA512

7c48b9b348b79416d6e16895b298c64f15b0eba1bd42c36c3368236615afdc90f742513e9a6000dae9a677e2d82e4b3d1ef8b5669655fd84c0ea7733c9a40632
SSDEEP

384:dI2SUCoQ3XgUzwsGCw5zSEZJgA6hgHpFChrV1mRvR6JZlbw8hqIusZzZxO:CNnzdwk8Rpcnur

Score

10^/10

njrat 666 discovery trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

666

C2

10.0.241.51:5552

Mutex

def55e13478210d122a75775a8344a1e

Attributes

reg_key
def55e13478210d122a75775a8344a1e
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
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 3 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2688	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2688	AcroRd32.exe
2688	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2504 wrote to memory of 2516	2504	55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe	30
PID 2516 wrote to memory of 2688	2516	rundll32.exe	31
PID 2516 wrote to memory of 2688	2516	rundll32.exe	31
PID 2516 wrote to memory of 2688	2516	rundll32.exe	31
PID 2516 wrote to memory of 2688	2516	rundll32.exe	31

C:\Users\Admin\AppData\Local\Temp\55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe
"C:\Users\Admin\AppData\Local\Temp\55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\cc123
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\cc123"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cc123

Filesize
23KB

MD5
b85baddd22e915e5e427ce5c04ed4b70

SHA1
9af824c64e4675e0e3ecd5bf7e3f4c9d158e7b0f

SHA256
55b0b958e1fc9c123568c382b1a0404326eb227155ff76367a2d49c33d92ea40

SHA512
7c48b9b348b79416d6e16895b298c64f15b0eba1bd42c36c3368236615afdc90f742513e9a6000dae9a677e2d82e4b3d1ef8b5669655fd84c0ea7733c9a40632

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
c420bd4646e73f610ab744d17be33152

SHA1
9399ee90fe633428af140e692e3384ba1e672bb8

SHA256
e0df4c01c157f4401f45f453dcd776bd5855299fb9c2980e38a2e9e12933996a

SHA512
5c1a8860e8126c97f254f6a0ab2d13d13cecf720fb4bd6ba8670a2ed18951e6db6113a9ec426885739aba282c29d12c6b8bb12e09b16fc22f2775b09cdd647c2

Download Submit
memory/2504-0-0x0000000074FC1000-0x0000000074FC2000-memory.dmp

Filesize
4KB

Download
memory/2504-1-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download
memory/2504-2-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download
memory/2504-5-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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