njrat | 74c40e2f13f3919815e98e4c5b6b1a6a34cd3d0f97ca588d56b4a1ae90979342

General

Target

Server.exe
Size

43KB
MD5

6dd93ac4471a3c615061219b4cd54da3
SHA1

c71064ca536f0cbc633c4e0159b0e72b428ae03a
SHA256

74c40e2f13f3919815e98e4c5b6b1a6a34cd3d0f97ca588d56b4a1ae90979342
SHA512

4b04187edfd322606b34d61234ab13e836cd063bffcf09b694a1754857f8d14c39673b5660d7097da0a269bc1c54872b67552cf47cc695ca2f21c88d65eefa1f
SSDEEP

384:QZyJj+CdsbhKIyKRBxwOIEWrr2z8Iij+ZsNO3PlpJKkkjh/TzF7pWnf/greT0pqP:W2NiwFKDx3ukuXQ/oS/+L

Score

10^/10

njrat hacked discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

run-julie.gl.at.ply.gg:5550

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe

Executes dropped EXE 4 IoCs

pid	Process
1908	Dllhost.exe
3272	Server.exe
3580	Server.exe
4344	Server.exe

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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .."	Dllhost.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 6 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1240	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3784	Server.exe
1908	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe
Token: 33	1908	Dllhost.exe
Token: SeIncBasePriorityPrivilege	1908	Dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3784 wrote to memory of 1908	3784	Server.exe	83
PID 3784 wrote to memory of 1908	3784	Server.exe	83
PID 3784 wrote to memory of 1908	3784	Server.exe	83
PID 1908 wrote to memory of 1240	1908	Dllhost.exe	84
PID 1908 wrote to memory of 1240	1908	Dllhost.exe	84
PID 1908 wrote to memory of 1240	1908	Dllhost.exe	84

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3784
- C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1908
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1240

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3272

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3580

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log

Filesize
507B

MD5
25d1b50e7c0d451f3d850eb54d27ca05

SHA1
a238807715c70a335f54e80d4855644b21a9e870

SHA256
650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

SHA512
4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\Dllhost.exe

Filesize
43KB

MD5
6dd93ac4471a3c615061219b4cd54da3

SHA1
c71064ca536f0cbc633c4e0159b0e72b428ae03a

SHA256
74c40e2f13f3919815e98e4c5b6b1a6a34cd3d0f97ca588d56b4a1ae90979342

SHA512
4b04187edfd322606b34d61234ab13e836cd063bffcf09b694a1754857f8d14c39673b5660d7097da0a269bc1c54872b67552cf47cc695ca2f21c88d65eefa1f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Server.exe

Filesize
86KB

MD5
c7bab02e8d39c779ccba1d1fed3b28e2

SHA1
0628b530e18507812ed24e12665b9601b31118d6

SHA256
cbaf648d10ddd488199570e45e27bf23c43bfb1280e1f3b2936cbcf634e75616

SHA512
88c37a5d0d2838be0cafc052d0f34b32ae57534b6525c666544bba98b978bd2fb1ed52443e6401b0771d0b91c6e882c96b8d75251ad5e0764c2aa64d757ad3b2

Download Submit
memory/1908-22-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

Download
memory/1908-21-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/1908-16-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/1908-17-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/1908-20-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-28-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-27-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-25-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3784-15-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3784-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/3784-2-0x0000000004E80000-0x0000000004F1C000-memory.dmp

Filesize
624KB

Download
memory/3784-4-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/3784-1-0x00000000004D0000-0x00000000004E2000-memory.dmp

Filesize
72KB

Download
memory/3784-3-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/3784-5-0x00000000052C0000-0x0000000005352000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads