njrat | 2de37d5ef0c4b16a733af9802c00982fddb034f719b09c90140a7d65c7c97389

General

Target

2788-29-0x00000000000F0000-0x0000000000466000-memory.exe
Size

3.5MB
MD5

f41f059f4245ebc2caaa103103a4689a
SHA1

c0b40d6520b58ce3e484d0f7c9ded7237c6fa059
SHA256

2de37d5ef0c4b16a733af9802c00982fddb034f719b09c90140a7d65c7c97389
SHA512

d0bd25c6558dec7ad6fc5ca4ed382fad82766db1551f654553c95b61fe57b228117bb818baf191256a49ed8e07b86247877ddaba86047091034e09b7c9ae0473
SSDEEP

49152:/WwUXMaVn3pT4I/5xCiZ+fdSoR9tUwjenBaB94Pw:/7UX13+I7CYCeBaB9A

Score

10^/10

njrat hacked discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

C2

6.tcp.eu.ngrok.io:12482

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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2788-29-0x00000000000F0000-0x0000000000466000-memory.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
696	Dllhost.exe
4084	Server.exe
3460	Server.exe
3352	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-1-5-21-3625106387-4207083342-115176794-1000\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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
33	6.tcp.eu.ngrok.io
67	6.tcp.eu.ngrok.io
76	6.tcp.eu.ngrok.io
128	6.tcp.eu.ngrok.io

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	2788-29-0x00000000000F0000-0x0000000000466000-memory.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

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
2528	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1756	2788-29-0x00000000000F0000-0x0000000000466000-memory.exe
696	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe
Token: 33	696	Dllhost.exe
Token: SeIncBasePriorityPrivilege	696	Dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 696	1756	2788-29-0x00000000000F0000-0x0000000000466000-memory.exe	87
PID 1756 wrote to memory of 696	1756	2788-29-0x00000000000F0000-0x0000000000466000-memory.exe	87
PID 1756 wrote to memory of 696	1756	2788-29-0x00000000000F0000-0x0000000000466000-memory.exe	87
PID 696 wrote to memory of 2528	696	Dllhost.exe	89
PID 696 wrote to memory of 2528	696	Dllhost.exe	89
PID 696 wrote to memory of 2528	696	Dllhost.exe	89

C:\Users\Admin\AppData\Local\Temp\2788-29-0x00000000000F0000-0x0000000000466000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\2788-29-0x00000000000F0000-0x0000000000466000-memory.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1756
- 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:696
- - 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:2528

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:4084

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:3460

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:3352

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

Web Service

1

T1102

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
3.5MB

MD5
f41f059f4245ebc2caaa103103a4689a

SHA1
c0b40d6520b58ce3e484d0f7c9ded7237c6fa059

SHA256
2de37d5ef0c4b16a733af9802c00982fddb034f719b09c90140a7d65c7c97389

SHA512
d0bd25c6558dec7ad6fc5ca4ed382fad82766db1551f654553c95b61fe57b228117bb818baf191256a49ed8e07b86247877ddaba86047091034e09b7c9ae0473

Download Submit
memory/696-17-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/696-30-0x00000000068F0000-0x0000000006908000-memory.dmp

Filesize
96KB

Download
memory/696-29-0x0000000006200000-0x0000000006266000-memory.dmp

Filesize
408KB

Download
memory/696-26-0x00000000058E0000-0x00000000058EA000-memory.dmp

Filesize
40KB

Download
memory/696-21-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/696-15-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/696-20-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1756-16-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1756-0-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/1756-5-0x0000000005F60000-0x0000000005FF2000-memory.dmp

Filesize
584KB

Download
memory/1756-3-0x0000000006420000-0x00000000069C4000-memory.dmp

Filesize
5.6MB

Download
memory/1756-4-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/1756-2-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

Filesize
624KB

Download
memory/1756-1-0x0000000000E30000-0x00000000011A6000-memory.dmp

Filesize
3.5MB

Download
memory/4084-24-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4084-25-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/4084-28-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads