njrat | 5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866

General

Target

5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe
Size

1.5MB
MD5

5f37d210408c55b06f52b07c56b54332
SHA1

93419c92542b9e54d16daf6563bce75a922e1afa
SHA256

5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866
SHA512

0ccead69208996cfa5fc7941ba109694cc3a4963c6225a7311e0068cd1d087e615ff0f0b75b7ac05b30304684ab1738d94e5b074e40f1835b1d5985c2caf145b
SSDEEP

49152:+gqKIXzHU/CU0pLvA3XHjEJaqEOzudmnf:+zI/J6A3XHjERrf

Score

10^/10

njrat discovery persistence trojan

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	Dllhost.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
2272	Dllhost.exe
3332	Dllhost.exe
1740	Server.exe
1424	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-1-5-21-22591836-1183090055-1220658180-1000\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

Suspicious use of NtSetInformationThreadHideFromDebugger 20 IoCs

pid	Process
2272	Dllhost.exe
2272	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
1740	Server.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
3332	Dllhost.exe
1424	Server.exe
1424	Server.exe
3332	Dllhost.exe
3332	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 5 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
1652	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2272	Dllhost.exe
3332	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe
Token: 33	3332	Dllhost.exe
Token: SeIncBasePriorityPrivilege	3332	Dllhost.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2272	Dllhost.exe
3332	Dllhost.exe
1740	Server.exe
1424	Server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 244 wrote to memory of 2272	244	5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe	86
PID 244 wrote to memory of 2272	244	5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe	86
PID 244 wrote to memory of 2272	244	5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe	86
PID 2272 wrote to memory of 3332	2272	Dllhost.exe	93
PID 2272 wrote to memory of 3332	2272	Dllhost.exe	93
PID 2272 wrote to memory of 3332	2272	Dllhost.exe	93
PID 3332 wrote to memory of 1652	3332	Dllhost.exe	97
PID 3332 wrote to memory of 1652	3332	Dllhost.exe	97
PID 3332 wrote to memory of 1652	3332	Dllhost.exe	97

C:\Users\Admin\AppData\Local\Temp\5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe
"C:\Users\Admin\AppData\Local\Temp\5306d7ecaf0da530dc78430e89cf4600c6c5bd5030b33018934e5365c36e4866.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:244
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Dllhost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
    "C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3332
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1652

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1740

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1424

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Dllhost.exe.log

Filesize
507B

MD5
25d1b50e7c0d451f3d850eb54d27ca05

SHA1
a238807715c70a335f54e80d4855644b21a9e870

SHA256
650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

SHA512
4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Dllhost.exe

Filesize
1.1MB

MD5
5ce0e5243691b94f82a7542be0e53243

SHA1
90ee1a7d39a907c0818aabc87a07de90d3a73958

SHA256
24a6454cbfebd84b0cfb7d0fc0ec2c7f55bd1c9c58a885149dac151d3c5f02f3

SHA512
ce899bd04209c28b9e7aa3b31b75ff1620bde39470f02f902de67d3a2a8c989d37e635e3e01a631f15ea2e7fbf243b3d1172d154f7acd836abd86a68f5a76dce

Download Submit
memory/1424-62-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/1424-60-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/1424-58-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/1740-51-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/1740-47-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/1740-45-0x0000000000DE0000-0x0000000001156000-memory.dmp

Filesize
3.5MB

Download
memory/2272-14-0x0000000074A30000-0x00000000751E0000-memory.dmp

Filesize
7.7MB

Download
memory/2272-15-0x0000000005C70000-0x0000000005D02000-memory.dmp

Filesize
584KB

Download
memory/2272-28-0x0000000074A30000-0x00000000751E0000-memory.dmp

Filesize
7.7MB

Download
memory/2272-8-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/2272-27-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/2272-10-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

Filesize
4KB

Download
memory/2272-11-0x0000000000060000-0x00000000003D6000-memory.dmp

Filesize
3.5MB

Download
memory/2272-12-0x00000000058E0000-0x000000000597C000-memory.dmp

Filesize
624KB

Download
memory/2272-13-0x0000000006130000-0x00000000066D4000-memory.dmp

Filesize
5.6MB

Download
memory/3332-31-0x00000000001C0000-0x0000000000536000-memory.dmp

Filesize
3.5MB

Download
memory/3332-38-0x0000000006A40000-0x0000000006A58000-memory.dmp

Filesize
96KB

Download
memory/3332-37-0x0000000005A00000-0x0000000005A66000-memory.dmp

Filesize
408KB

Download
memory/3332-36-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/3332-35-0x00000000001C0000-0x0000000000536000-memory.dmp

Filesize
3.5MB

Download
memory/3332-30-0x00000000001C0000-0x0000000000536000-memory.dmp

Filesize
3.5MB

Download
memory/3332-26-0x00000000001C0000-0x0000000000536000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads