njrat | e1e60470ad08a45a0829efd284577c1d4cfe0a1e812259691c7c88671fa1bd22

General

Target

ca884e0394388adeac4b4e7625348ff4.exe
Size

402KB
MD5

ca884e0394388adeac4b4e7625348ff4
SHA1

fd192d286f2ecd22655b474b319a2b5baa4ba12c
SHA256

e1e60470ad08a45a0829efd284577c1d4cfe0a1e812259691c7c88671fa1bd22
SHA512

ea5328099ab2dd5b478edf46a81faec12d92c37e00baa4761f1fed37ff42076c1925308742d2381f61faf899879878a6451f0328f65399754ce2fa3c86e11628
SSDEEP

6144:nmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgl:USmLAuEY71fviagATFmebVQDcYc5

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 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1680	netsh.exe

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	test.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
2952	test.exe
3008	Trojan.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1732-0-0x0000000000400000-0x00000000004FB000-memory.dmp	upx
behavioral2/memory/1732-21-0x0000000000400000-0x00000000004FB000-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-1-5-21-1497073144-2389943819-3385106915-1000\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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4976	1732	WerFault.exe	84
1976	1732	WerFault.exe	84

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe
3008	Trojan.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	Trojan.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 976	1732	ca884e0394388adeac4b4e7625348ff4.exe	89
PID 1732 wrote to memory of 976	1732	ca884e0394388adeac4b4e7625348ff4.exe	89
PID 1732 wrote to memory of 976	1732	ca884e0394388adeac4b4e7625348ff4.exe	89
PID 976 wrote to memory of 2952	976	cmd.exe	90
PID 976 wrote to memory of 2952	976	cmd.exe	90
PID 976 wrote to memory of 2952	976	cmd.exe	90
PID 2952 wrote to memory of 3008	2952	test.exe	91
PID 2952 wrote to memory of 3008	2952	test.exe	91
PID 2952 wrote to memory of 3008	2952	test.exe	91
PID 3008 wrote to memory of 1680	3008	Trojan.exe	93
PID 3008 wrote to memory of 1680	3008	Trojan.exe	93
PID 3008 wrote to memory of 1680	3008	Trojan.exe	93

C:\Users\Admin\AppData\Local\Temp\ca884e0394388adeac4b4e7625348ff4.exe
"C:\Users\Admin\AppData\Local\Temp\ca884e0394388adeac4b4e7625348ff4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 240
  2⤵
  - Program crash
  PID:4976
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:976
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2952
  - - C:\Users\Admin\AppData\Local\Temp\Trojan.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
      4⤵
      Drops startup file
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3008
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
        5⤵
        Modifies Windows Firewall
        
        PID:1680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 164
  2⤵
  - Program crash
  PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1732 -ip 1732
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1732 -ip 1732
1⤵
PID:1264

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

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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/1732-0-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download
memory/1732-21-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download
memory/2952-5-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/2952-6-0x0000000000C10000-0x0000000000C20000-memory.dmp

Filesize
64KB

Download
memory/2952-7-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/2952-17-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/3008-19-0x00000000008C0000-0x00000000008D0000-memory.dmp

Filesize
64KB

Download
memory/3008-18-0x0000000075130000-0x00000000756E1000-memory.dmp

Filesize
5.7MB

Download
memory/3008-22-0x0000000075130000-0x00000000756E1000-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