njrat | efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790

Analysis

max time kernel
151s
max time network
170s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06/05/2023, 20:31

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General

Target

0x000a0000000133de62.exe
Size

37KB
MD5

460525e0e9ced13c10ada8bd39a3b6a8
SHA1

c679d90b08583b4ce782e0f35ff10723e558fe7f
SHA256

efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790
SHA512

4b0fa5982fa137c29ccdc83c65eb40127188a9061523ae7afac5c4371e588bfbed4281c32349d327f295e01af580929ba66d7d4695584856dd827384a04fde79
SSDEEP

384:5tKyngiBt/sBkVYv9qykTHkXXTnLfUbqNfZCReimEihsKxNm/y9U386j1SD9XRNE:3RNf49ZkTHg/fjtSeiIiNZSpBhU

Score

10^/10

njrat i evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

finally-bunch.at.ply.gg:42320

Mutex

a70d955761eaa352e51201c79158753c

Attributes

reg_key
a70d955761eaa352e51201c79158753c
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1084	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a70d955761eaa352e51201c79158753c.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a70d955761eaa352e51201c79158753c.exe	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1996	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
824	0x000a0000000133de62.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\a70d955761eaa352e51201c79158753c = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\a70d955761eaa352e51201c79158753c = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	svchost.exe
File opened for modification	C:\autorun.inf	svchost.exe
File created	D:\autorun.inf	svchost.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1168	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe
1996	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1996	svchost.exe

Suspicious use of AdjustPrivilegeToken 20 IoCs

description	pid	Process
Token: SeDebugPrivilege	1996	svchost.exe
Token: SeDebugPrivilege	1168	taskkill.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe
Token: 33	1996	svchost.exe
Token: SeIncBasePriorityPrivilege	1996	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 1996	824	0x000a0000000133de62.exe	28
PID 824 wrote to memory of 1996	824	0x000a0000000133de62.exe	28
PID 824 wrote to memory of 1996	824	0x000a0000000133de62.exe	28
PID 824 wrote to memory of 1996	824	0x000a0000000133de62.exe	28
PID 1996 wrote to memory of 1084	1996	svchost.exe	29
PID 1996 wrote to memory of 1084	1996	svchost.exe	29
PID 1996 wrote to memory of 1084	1996	svchost.exe	29
PID 1996 wrote to memory of 1084	1996	svchost.exe	29
PID 1996 wrote to memory of 1168	1996	svchost.exe	31
PID 1996 wrote to memory of 1168	1996	svchost.exe	31
PID 1996 wrote to memory of 1168	1996	svchost.exe	31
PID 1996 wrote to memory of 1168	1996	svchost.exe	31

C:\Users\Admin\AppData\Local\Temp\0x000a0000000133de62.exe
"C:\Users\Admin\AppData\Local\Temp\0x000a0000000133de62.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:824
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops autorun.inf file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1084
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM taskmgr.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1168

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a70d955761eaa352e51201c79158753c.exe

Filesize
37KB

MD5
460525e0e9ced13c10ada8bd39a3b6a8

SHA1
c679d90b08583b4ce782e0f35ff10723e558fe7f

SHA256
efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790

SHA512
4b0fa5982fa137c29ccdc83c65eb40127188a9061523ae7afac5c4371e588bfbed4281c32349d327f295e01af580929ba66d7d4695584856dd827384a04fde79

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
37KB

MD5
460525e0e9ced13c10ada8bd39a3b6a8

SHA1
c679d90b08583b4ce782e0f35ff10723e558fe7f

SHA256
efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790

SHA512
4b0fa5982fa137c29ccdc83c65eb40127188a9061523ae7afac5c4371e588bfbed4281c32349d327f295e01af580929ba66d7d4695584856dd827384a04fde79

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
37KB

MD5
460525e0e9ced13c10ada8bd39a3b6a8

SHA1
c679d90b08583b4ce782e0f35ff10723e558fe7f

SHA256
efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790

SHA512
4b0fa5982fa137c29ccdc83c65eb40127188a9061523ae7afac5c4371e588bfbed4281c32349d327f295e01af580929ba66d7d4695584856dd827384a04fde79

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe

Filesize
37KB

MD5
460525e0e9ced13c10ada8bd39a3b6a8

SHA1
c679d90b08583b4ce782e0f35ff10723e558fe7f

SHA256
efac401541da85216e9437f64e3c9d344040018e3dfa304219db3bac0d43a790

SHA512
4b0fa5982fa137c29ccdc83c65eb40127188a9061523ae7afac5c4371e588bfbed4281c32349d327f295e01af580929ba66d7d4695584856dd827384a04fde79

Download Submit
memory/824-54-0x0000000000B80000-0x0000000000BC0000-memory.dmp

Filesize
256KB

Download
memory/1996-62-0x0000000000BF0000-0x0000000000C30000-memory.dmp

Filesize
256KB

Download
memory/1996-64-0x0000000000BF0000-0x0000000000C30000-memory.dmp

Filesize
256KB

Download