runningrat | b10884a495070c2f9ee183bbbb6d1b8f7351fc75d094f4bb212c38c859a6e867

General

Target

me.exe
Size

68KB
MD5

04485ee0f0313f990255aa4a06546abb
SHA1

fa87b9a7b914c11fb75b775e391a3ad46d4eb432
SHA256

b10884a495070c2f9ee183bbbb6d1b8f7351fc75d094f4bb212c38c859a6e867
SHA512

d95011d0bbae4c63ab0acf26568d0759990f26ed87dbc60ed01fdb840477519adb931feff6a6029c0b32d4ba4623ef2951ca260fcfabc609b364f51f775f024b
SSDEEP

768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMI4V:BHJaAoHoc2x7bZoYBAcQlwJdME

Score

10^/10

runningrat discovery persistence rat

Malware Config

Extracted

Family

runningrat

Signatures

RunningRat
RunningRat is a remote access trojan first seen in 2018.
rat runningrat

RunningRat payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4924-1-0x0000000010000000-0x000000001000F000-memory.dmp	family_runningrat

Runningrat family
runningrat

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

Processes:

me.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NETSYSDDL\Parameters\ServiceDll = "C:\\Windows\\system32\\240617859.dll"	me.exe

Executes dropped EXE 1 IoCs

Processes:

NETSYSDDL.exe

pid process

5012 NETSYSDDL.exe
Loads dropped DLL 4 IoCs

Processes:

me.exesvchost.exeNETSYSDDL.exe

pid process

4924 me.exe
4924 me.exe
4180 svchost.exe
5012 NETSYSDDL.exe

pid	process
5012	NETSYSDDL.exe

pid	process
4924	me.exe
4924	me.exe
4180	svchost.exe
5012	NETSYSDDL.exe

Drops file in System32 directory 4 IoCs

Processes:

me.exesvchost.exe

description	ioc	process
File created	C:\Windows\SysWOW64\240617859.dll	me.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	me.exe
File created	C:\Windows\SysWOW64\NETSYSDDL.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\NETSYSDDL.exe	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

me.exesvchost.exeNETSYSDDL.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	me.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSYSDDL.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

NETSYSDDL.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	NETSYSDDL.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	NETSYSDDL.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

NETSYSDDL.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	NETSYSDDL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	NETSYSDDL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	NETSYSDDL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	NETSYSDDL.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	NETSYSDDL.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

svchost.exe

description	pid	process	target process
PID 4180 wrote to memory of 5012	4180	svchost.exe	NETSYSDDL.exe
PID 4180 wrote to memory of 5012	4180	svchost.exe	NETSYSDDL.exe
PID 4180 wrote to memory of 5012	4180	svchost.exe	NETSYSDDL.exe

C:\Users\Admin\AppData\Local\Temp\me.exe
"C:\Users\Admin\AppData\Local\Temp\me.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:4924

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETSYSDDL"
1⤵
PID:664

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETSYSDDL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Windows\SysWOW64\NETSYSDDL.exe
  C:\Windows\system32\NETSYSDDL.exe "c:\windows\system32\240617859.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:5012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

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:\Windows\SysWOW64\240617859.dll

Filesize
37KB

MD5
7aa22dd5705a4b7f24d26bc747540864

SHA1
f5f40fa4194458609cd28767864be44361186574

SHA256
b41d33b62d105da0d64065f5ce7ed16b95e16f9437401a13b6571e43f4670d2f

SHA512
716f51c2a69f91f40338958d38ac8ba0ecbe585f6b0325ee04d293a2ab08b63536c169327d1b95bdef9c3fe8db116ddd1b145fda6d697112aaa6450f78a54037

Download Submit
C:\Windows\SysWOW64\NETSYSDDL.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Windows\SysWOW64\ini.ini

Filesize
44B

MD5
085bce4fa97a3a63a991683be0af5d2f

SHA1
e16387e6f33517436f2d5c6ebcfba48c19e26ae5

SHA256
9d7593dc36a2db3e535dec653e3f13788b5923011304e3ee826923066a2d066a

SHA512
204621ff59c66fb31413a7cc573c2ace6232f79496a184ff8530de164a37790d9b312a84ab74a12f699f50aee1e6244ec6f61724d9a3bee50c2b55c86e373579

Download Submit
memory/4924-1-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/4924-8-0x0000000000480000-0x000000000048D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads