runningrat | bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884

Analysis

max time kernel
139s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02-05-2024 11:56

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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

resource	yara_rule
behavioral2/memory/3732-1-0x0000000010000000-0x000000001000F000-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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\NETRUSDDL\Parameters\ServiceDll = "C:\\Windows\\system32\\240599484.dll"	me.exe

Executes dropped EXE 1 IoCs

pid	Process
3048	NETRUSDDL.exe

Loads dropped DLL 4 IoCs

pid	Process
3732	me.exe
3732	me.exe
3504	svchost.exe
3048	NETRUSDDL.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240599484.dll	me.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	me.exe
File created	C:\Windows\SysWOW64\NETRUSDDL.exe	svchost.exe
File opened for modification	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

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

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

description	pid	Process	procid_target
PID 3504 wrote to memory of 3048	3504	svchost.exe	93
PID 3504 wrote to memory of 3048	3504	svchost.exe	93
PID 3504 wrote to memory of 3048	3504	svchost.exe	93

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:3732

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
PID:2356

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:3504
- C:\Windows\SysWOW64\NETRUSDDL.exe
  C:\Windows\system32\NETRUSDDL.exe "c:\windows\system32\240599484.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:3048

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

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Downloads

C:\Windows\SysWOW64\240599484.dll

Filesize
37KB

MD5
dec7a07498323c883b07c7fbfb9153aa

SHA1
37c47340661d718f3b02dfef0b0f609f33a773bb

SHA256
a7f99e16d0a80441ad1ead23411a5e4bb3191209fb1674625ddec4db9e8c4035

SHA512
705242c52a160b54ec44d514310efc262ea81bc9eb92f120d4f2212b67c35f107539dd5c6a3c31c1f0353105fae857554ac53f2f8e43173da1038121aa8c9727

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
b692550cfa5afb0396d823ade1dcfb18

SHA1
911f2bcee0805fa62f3fbe37dc7e80870bd36ca8

SHA256
d0558c4e9f6f5661960dcd9e7a78e99bc4581a8082ec7f88fad1049dc06e226c

SHA512
56aed346f8cd59c3ab35a4dfd83198e4e7801450654bae3d1007b70b608bdae55f16552fe9a311e85707b4200bbaf139060b678bd783519e264ed8bd7ecdb372

Download Submit
memory/3732-1-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/3732-8-0x00000000005B0000-0x00000000005BD000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads