njrat | 4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463

General

Target

37eadb2a6a140992e449eabfb0835d8f.exe
Size

402KB
MD5

37eadb2a6a140992e449eabfb0835d8f
SHA1

77cc4134b54cc4a07624e7b332713a08b7efc617
SHA256

4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463
SHA512

d521f6cb1ab2723bafc5093eb69c326ce65f48a6961eddb8107159663e60104cf38d9baaea18013939ced450d0e8b63960619f2a40c7cdb715226da51b769e24
SSDEEP

6144:kmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgW:NSmLAuEY71fviagATFmebVQDcYc6

Score

10^/10

njrat pdf evasion persistence trojan upx

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

C2

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes

reg_key
5cd8f17f4086744065eb0992a09e05a2
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2584	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe	Trojan.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe	Trojan.exe

Executes dropped EXE 2 IoCs

pid	Process
2396	test.exe
2168	Trojan.exe

Loads dropped DLL 2 IoCs

pid	Process
2668	cmd.exe
2396	test.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2252-1-0x0000000000400000-0x00000000004FA000-memory.dmp	upx

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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2668	2252	37eadb2a6a140992e449eabfb0835d8f.exe	20
PID 2252 wrote to memory of 2668	2252	37eadb2a6a140992e449eabfb0835d8f.exe	20
PID 2252 wrote to memory of 2668	2252	37eadb2a6a140992e449eabfb0835d8f.exe	20
PID 2252 wrote to memory of 2668	2252	37eadb2a6a140992e449eabfb0835d8f.exe	20
PID 2668 wrote to memory of 2396	2668	cmd.exe	19
PID 2668 wrote to memory of 2396	2668	cmd.exe	19
PID 2668 wrote to memory of 2396	2668	cmd.exe	19
PID 2668 wrote to memory of 2396	2668	cmd.exe	19
PID 2396 wrote to memory of 2168	2396	test.exe	18
PID 2396 wrote to memory of 2168	2396	test.exe	18
PID 2396 wrote to memory of 2168	2396	test.exe	18
PID 2396 wrote to memory of 2168	2396	test.exe	18
PID 2168 wrote to memory of 2584	2168	Trojan.exe	17
PID 2168 wrote to memory of 2584	2168	Trojan.exe	17
PID 2168 wrote to memory of 2584	2168	Trojan.exe	17
PID 2168 wrote to memory of 2584	2168	Trojan.exe	17

C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe
"C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2668

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
1⤵
- Modifies Windows Firewall
PID:2584

C:\Users\Admin\AppData\Local\Temp\Trojan.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
1⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2168

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
78KB

MD5
42c5854aa0709d8bf6c28ea82c67b9a5

SHA1
124ea473f0572009de85a4a46f361109f4fae7d6

SHA256
71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

SHA512
c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

Download Submit
memory/2168-18-0x00000000001E0000-0x0000000000220000-memory.dmp

Filesize
256KB

Download
memory/2168-16-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2168-20-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2168-21-0x00000000001E0000-0x0000000000220000-memory.dmp

Filesize
256KB

Download
memory/2252-1-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download
memory/2252-17-0x0000000000400000-0x00000000004FA000-memory.dmp

Filesize
1000KB

Download
memory/2396-6-0x0000000001F90000-0x0000000001FD0000-memory.dmp

Filesize
256KB

Download
memory/2396-7-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2396-5-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2396-15-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads