runningrat | bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884

Analysis

max time kernel
148s
max time network
152s
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 11:44

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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/2968-0-0x0000000010000000-0x000000001000F000-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\\240594312.dll"	me.exe

Executes dropped EXE 1 IoCs

Processes:

NETRUSDDL.exe

pid	Process
3704	NETRUSDDL.exe

Loads dropped DLL 4 IoCs

Processes:

me.exesvchost.exeNETRUSDDL.exe

pid	Process
2968	me.exe
2968	me.exe
1788	svchost.exe
3704	NETRUSDDL.exe

Drops file in System32 directory 4 IoCs

Processes:

svchost.exeme.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\NETRUSDDL.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\NETRUSDDL.exe	svchost.exe
File created	C:\Windows\SysWOW64\240594312.dll	me.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	me.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	NETRUSDDL.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	NETRUSDDL.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

NETRUSDDL.exe

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

svchost.exe

description	pid	Process	procid_target
PID 1788 wrote to memory of 3704	1788	svchost.exe	96
PID 1788 wrote to memory of 3704	1788	svchost.exe	96
PID 1788 wrote to memory of 3704	1788	svchost.exe	96

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:2968

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
PID:1048

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:1788
- C:\Windows\SysWOW64\NETRUSDDL.exe
  C:\Windows\system32\NETRUSDDL.exe "c:\windows\system32\240594312.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:3704

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\240594312.dll

Filesize
37KB

MD5
0abf0eda2f81ffa3a3b0d69e917368e9

SHA1
c9ddf26fe3d102daf8d09e9cf49a9c31cf5ba9b7

SHA256
01345096eb6ebde03cc4f950bc8cb5dce4c19e1e19ed6e409854617041fdcecf

SHA512
13e9e1e95ea612c5648e816669ac5192a174b56d0531027da1b8e37c01fd1a33335ecad69f8ad6ef80f55c4a25a5debe56fdd090e82d5246573b175ccbccdde2

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
c488bf3496a84df43ca9f4c1b4cc55d3

SHA1
45d02a38057aa889254a6a24adedb186dda93d03

SHA256
5f480218c7452944babe7c75df3cde05771a5899a8ae9a5e439ab83d44de2e92

SHA512
6baa9fb4dc4dcd2764ca84aa9113f3325e09d3f44a359c72780fe9db3033f3e4acdc91646670299af1152aea71e47313b23d2f23aa40bd1ccac6b4a06411f207

Download Submit
memory/2968-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2968-8-0x00000000005D0000-0x00000000005DD000-memory.dmp

Filesize
52KB

Download