runningrat | bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884

Analysis

max time kernel
93s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 11:58

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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/4520-0-0x0000000010000000-0x000000001000F000-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\\240605500.dll"	me.exe

Executes dropped EXE 1 IoCs

Processes:

NETRUSDDL.exe

pid	Process
3832	NETRUSDDL.exe

Loads dropped DLL 4 IoCs

Processes:

me.exesvchost.exeNETRUSDDL.exe

pid	Process
4520	me.exe
4520	me.exe
4140	svchost.exe
3832	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\240605500.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	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	NETRUSDDL.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

svchost.exe

description	pid	Process	procid_target
PID 4140 wrote to memory of 3832	4140	svchost.exe	89
PID 4140 wrote to memory of 3832	4140	svchost.exe	89
PID 4140 wrote to memory of 3832	4140	svchost.exe	89

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:4520

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
PID:2108

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:4140
- C:\Windows\SysWOW64\NETRUSDDL.exe
  C:\Windows\system32\NETRUSDDL.exe "c:\windows\system32\240605500.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:3832

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\240605500.dll

Filesize
37KB

MD5
61572778ca4169078fd3d623863c09e3

SHA1
74259f5e61761ac488f036104b3a10d0dd0c40a9

SHA256
2151a4be86f3452fa876d456cf7e526cccea63489c19786ff08a0dde9dc5a0f2

SHA512
85060e7c390b3d43eee9729a5b5d0b1d86dbc82d9631130e300d8066c4dcabf1f3fd69d88b3bb2a7458213f147f54667e7828b106aaba2fbae42ccc5523f261c

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
de3dab219e4e5dd1f5493a6a21b3da2a

SHA1
718ecbf205f5d9b5aa9e79e044463e161b24440b

SHA256
f9e18d50fc0df25cca402836a21aca6fff192f0aadc698eee0ceb4ea01e67303

SHA512
6cc99633fca64d54ea9c478c981ab0fb92b2212886c82bf4362b5be3bc10e2844997b427a3d45e6acc230190bb48f4fb5cce305e737ec0dc45fc33c5f90b3443

Download Submit
memory/4520-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/4520-8-0x00000000020E0000-0x00000000020ED000-memory.dmp

Filesize
52KB

Download