njrat | 7ace880a12fbf9ab8a03d31f1c3fd6d481224620d4016f40fe43e60dbaeb62b6

General

Target
xxx (1).exe
Size 25KB
Sample260706-dascmsht3x
SHA256 7ace880a12fbf9ab8a03d31f1c3fd6d481224620d4016f40fe43e60dbaeb62b6
MD5 dee075baa88ad4880b33422bb7c478bf
SHA1 efeba7bd9e756e085d6c1e7cc1d0e7561a6ef18c
SHA512 7fabd952175cc85b872454908bf77a818e1c5812d75ba0d42efd582bea27f20ffbf842c9074333be70bf4da2cd679515013a8817f231a9b59ce868b2c44c73b5
SSDEEP 384:sv3ZIl+NA18HjNhyY1rLVZSICwVcp0F9h2HbmdPvo8I6CQ329bzRMPgU7vNn6K:svpZNDHj3Z1apwgwvj1Co2RNMPNxnJ
TLSH
T1AEC2E102D755ABB6D46D4D742BFB4271F2B0926A3987263D4A9C0C62FE937DA0C913C1
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

lox execution njrat persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

LOX

C2

materials-windsor.gl.at.ply.gg:14318

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

Family: 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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	xxx (1).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 5 IoCs

pid	Process
5056	Dllhost.exe
4628	Dllhost.exe
4492	Server.exe
4632	Server.exe
4500	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-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\ProgramData\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\ProgramData\\Dllhost.exe\" .."	Dllhost.exe

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

System Information Discovery
T1082

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
2132	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
560	xxx (1).exe
5056	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe
Token: 33	5056	Dllhost.exe
Token: SeIncBasePriorityPrivilege	5056	Dllhost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 5056	560	xxx (1).exe	91
PID 5056 wrote to memory of 2132	5056	Dllhost.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\xxx (1).exe
"C:\Users\Admin\AppData\Local\Temp\xxx (1).exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:560
- C:\ProgramData\Dllhost.exe
  "C:\ProgramData\Dllhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5056
- - C:\Windows\SYSTEM32\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2132

C:\ProgramData\Dllhost.exe
"C:\ProgramData\Dllhost.exe" ..
1⤵
- Executes dropped EXE
PID:4628

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:4492

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:4632

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:4500

Network

MITRE ATT&CK Enterprise v16

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Dllhost.exe

Path C:\ProgramData\Dllhost.exe
Size 25KB
SHA256 7ace880a12fbf9ab8a03d31f1c3fd6d481224620d4016f40fe43e60dbaeb62b6
MD5 dee075baa88ad4880b33422bb7c478bf
SHA1 efeba7bd9e756e085d6c1e7cc1d0e7561a6ef18c
SHA512 7fabd952175cc85b872454908bf77a818e1c5812d75ba0d42efd582bea27f20ffbf842c9074333be70bf4da2cd679515013a8817f231a9b59ce868b2c44c73b5
SSDEEP 384:sv3ZIl+NA18HjNhyY1rLVZSICwVcp0F9h2HbmdPvo8I6CQ329bzRMPgU7vNn6K:svpZNDHj3Z1apwgwvj1Co2RNMPNxnJ
TLSH
T1AEC2E102D755ABB6D46D4D742BFB4271F2B0926A3987263D4A9C0C62FE937DA0C913C1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Server.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Server.exe.log
Size 1KB
SHA256 8b96a8557deea66696837af011843d6a82451ba57c8f9b5a2726a70818d6fc7e
MD5 a8a147915e3a996fdbe10b3a3f1e1bb2
SHA1 abc564c1be468d57e700913e7b6cf8f62d421263
SHA512 17b42f17ef60a9f625703172763f692e5ed2ca93564a97853dfa72bb0ac6305ef3267aea0b205938e3aa8eac10156d9d4f322b30d0329d92d647bcec6372731c
TLSH
T1A51189342276E1D889163F512C1E2AC443BF4767B660EE0C7998A39EED361175F212E7
MD5 SHA1 SHA512 TLSH

Submit Download

memory/560-0-0x00000000004E0000-0x00000000004E8000-memory.dmp

Download

memory/560-1-0x0000000000E90000-0x0000000000EA2000-memory.dmp

Download

memory/560-2-0x000000001B190000-0x000000001B1A0000-memory.dmp

Download

memory/5056-12-0x0000000001490000-0x00000000014A0000-memory.dmp

Download

memory/5056-18-0x0000000001490000-0x00000000014A0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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