runningrat | bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 12:11

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General

Target

me.exe
Size

68KB
MD5

56ebc5ff9dece63f071cb0632a7cf43b
SHA1

50373327e5aee1719f7d7ba1387a2ac67abc7111
SHA256

bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884
SHA512

d73b5399baf7ad66b00eea5c601a8aeb1d3900a9b345ede09796eb732be556e5b79a7dbd587fa7939e4986828a6846c782f9908dda528d0bc1d9d9fb6e0d5d39
SSDEEP

768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMI5V:BHJaAoHoc2x7bZoYBAcQlwJdMJ

Score

10^/10

runningrat persistence rat

Malware Config

Signatures

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

RunningRat payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2004-0-0x0000000010000000-0x000000001000F000-memory.dmp	family_runningrat

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

me.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NETRUSDDL\Parameters\ServiceDll = "C:\\Windows\\system32\\240593890.dll"	me.exe

Executes dropped EXE 1 IoCs

Processes:

NETRUSDDL.exe

pid process

4720 NETRUSDDL.exe
Loads dropped DLL 4 IoCs

Processes:

me.exesvchost.exeNETRUSDDL.exe

pid process

2004 me.exe
2004 me.exe
4504 svchost.exe
4720 NETRUSDDL.exe

pid	process
4720	NETRUSDDL.exe

pid	process
2004	me.exe
2004	me.exe
4504	svchost.exe
4720	NETRUSDDL.exe

Drops file in System32 directory 4 IoCs

Processes:

svchost.exeme.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\NETRUSDDL.exe	svchost.exe
File created	C:\Windows\SysWOW64\240593890.dll	me.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	me.exe
File created	C:\Windows\SysWOW64\NETRUSDDL.exe	svchost.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:

NETRUSDDL.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

NETRUSDDL.exe

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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

svchost.exe

description	pid	process	target process
PID 4504 wrote to memory of 4720	4504	svchost.exe	NETRUSDDL.exe
PID 4504 wrote to memory of 4720	4504	svchost.exe	NETRUSDDL.exe
PID 4504 wrote to memory of 4720	4504	svchost.exe	NETRUSDDL.exe

C:\Users\Admin\AppData\Local\Temp\me.exe
"C:\Users\Admin\AppData\Local\Temp\me.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
PID:2004

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
PID:3028

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Windows\SysWOW64\NETRUSDDL.exe
  C:\Windows\system32\NETRUSDDL.exe "c:\windows\system32\240593890.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:4720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\240593890.dll

Filesize
37KB

MD5
7bdc29d57a52275c0faa6f6eb45c0bf8

SHA1
c61e1f666a60a01372eba3afce206974f3c982e5

SHA256
9a64da96ee8428d28ab3c036eb87a23894ee8de62fe0d8a0a17ae61d9ea5df00

SHA512
6d3b1e6dd20060f97dcc89e7b964efb09bace1ff9a70c384b52ccc8afd66d4c0c1452e6741af1221fa1595798457aa3d282e3d913f8354dd6f270e1af9c36b04

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
44B

MD5
42eb1927177517b8ee02c588838a9b08

SHA1
47262879bf7343594e67561238bd4bd6606cbae4

SHA256
5b844b4d1f2d4a950042c16f1152fab2df6b3f72fda9e9c2074d44c7769a9bdc

SHA512
327cf5c092f50972b0818c201e8b83f7a1281e48222458c7eb2e94cc95669eb5a4035ce9ea596c730a3c451fd3c65a4866068f80c6d2bbec9a1949a7a76fa6cc

Download Submit
memory/2004-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2004-8-0x0000000000600000-0x000000000060D000-memory.dmp

Filesize
52KB

Download