njrat | 4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463

Analysis

max time kernel
140s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 13:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

37eadb2a6a140992e449eabfb0835d8f.exe
Size

402KB
MD5

37eadb2a6a140992e449eabfb0835d8f
SHA1

77cc4134b54cc4a07624e7b332713a08b7efc617
SHA256

4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463
SHA512

d521f6cb1ab2723bafc5093eb69c326ce65f48a6961eddb8107159663e60104cf38d9baaea18013939ced450d0e8b63960619f2a40c7cdb715226da51b769e24
SSDEEP

6144:kmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgW:NSmLAuEY71fviagATFmebVQDcYc6

Score

10^/10

njrat pdf trojan upx

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes

reg_key
5cd8f17f4086744065eb0992a09e05a2
splitter
|'|'|

Signatures

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	test.exe

Executes dropped EXE 2 IoCs

pid	Process
3896	test.exe
1356	Trojan.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4584-0-0x0000000000400000-0x00000000004FA000-memory.dmp	upx
behavioral2/memory/4584-1-0x0000000000400000-0x00000000004FA000-memory.dmp	upx
behavioral2/memory/4584-3-0x0000000000400000-0x00000000004FA000-memory.dmp	upx
behavioral2/memory/4584-32-0x0000000000400000-0x00000000004FA000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4020	4584	WerFault.exe	87

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4584 wrote to memory of 2996	4584	37eadb2a6a140992e449eabfb0835d8f.exe	95
PID 4584 wrote to memory of 2996	4584	37eadb2a6a140992e449eabfb0835d8f.exe	95
PID 4584 wrote to memory of 2996	4584	37eadb2a6a140992e449eabfb0835d8f.exe	95
PID 2996 wrote to memory of 3896	2996	cmd.exe	96
PID 2996 wrote to memory of 3896	2996	cmd.exe	96
PID 2996 wrote to memory of 3896	2996	cmd.exe	96
PID 3896 wrote to memory of 1356	3896	test.exe	101
PID 3896 wrote to memory of 1356	3896	test.exe	101
PID 3896 wrote to memory of 1356	3896	test.exe	101

C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe
"C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:3896
  - - C:\Users\Admin\AppData\Local\Temp\Trojan.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
      4⤵
      Executes dropped EXE
      PID:1356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 164
  2⤵
  - Program crash
  PID:4020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4584 -ip 4584
1⤵
PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4584 -ip 4584
1⤵
PID:3196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
78KB

MD5
42c5854aa0709d8bf6c28ea82c67b9a5

SHA1
124ea473f0572009de85a4a46f361109f4fae7d6

SHA256
71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

SHA512
c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

Download Submit
memory/1356-26-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/1356-31-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/1356-27-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/3896-11-0x0000000001670000-0x0000000001680000-memory.dmp

Filesize
64KB

Download
memory/3896-10-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/3896-14-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/3896-15-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/3896-16-0x0000000001670000-0x0000000001680000-memory.dmp

Filesize
64KB

Download
memory/3896-8-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/3896-30-0x0000000074260000-0x0000000074811000-memory.dmp

Filesize
5.7MB

Download
memory/4584-0-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download
memory/4584-3-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download
memory/4584-1-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download
memory/4584-32-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download