runningrat | bbe31a4ecad08a0cd9d895fcb01f6d2353d6e3a69a76c6d25ca0365eac810884

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
behavioral1/memory/2248-0-0x0000000010000000-0x000000001000F000-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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\NETRUSDDL\Parameters\ServiceDll = "C:\\Windows\\system32\\259393283.dll"	me.exe

Executes dropped EXE 1 IoCs

pid	Process
3048	NETRUSDDL.exe

Loads dropped DLL 7 IoCs

pid	Process
2248	me.exe
3024	svchost.exe
3024	svchost.exe
3048	NETRUSDDL.exe
3048	NETRUSDDL.exe
3048	NETRUSDDL.exe
3048	NETRUSDDL.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\259393283.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 6 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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	NETRUSDDL.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	NETRUSDDL.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3048	3024	svchost.exe	30
PID 3024 wrote to memory of 3048	3024	svchost.exe	30
PID 3024 wrote to memory of 3048	3024	svchost.exe	30
PID 3024 wrote to memory of 3048	3024	svchost.exe	30

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:2248

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUSDDL"
1⤵
PID:3012

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:3024
- C:\Windows\SysWOW64\NETRUSDDL.exe
  C:\Windows\system32\NETRUSDDL.exe "c:\windows\system32\259393283.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

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ini.ini

Filesize
44B

MD5
6c2f5a6fcd7346414f1593233c7e8f70

SHA1
08033f1c32acd1314c4707acc332a40812339ad5

SHA256
c9e07a20274ae6a302698788540e208aaf8fe56b75a3a594cd7287eb40de5989

SHA512
f6079dfbbf76d3251afa55570423cca5c108f8a5c8a924fd0b57a1fad8baa0c864b98fc21cb07022ea7f953f9f23a915ea16ac72afb9a0aacd94ef91b2f24ea1

Download Submit
\Windows\SysWOW64\259393283.dll

Filesize
37KB

MD5
4846bc2f230a559f16085f8f6539db14

SHA1
ebf67aa28742dc138d67cb66d31ff2f6c090e74a

SHA256
adba9413b442d6d0298cfa70acc38591e9b0fac7bc07e91d1dffc0962de90d1b

SHA512
861b184f39d80b81379e9781375d578fd40fdaa282b70f876300d1b58bbadd36d65630ce6e6d56c7e02f31276a3fd18c10362ab0e1be865cb97b3b0009270449

Download Submit
\Windows\SysWOW64\NETRUSDDL.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2248-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2248-6-0x0000000000270000-0x000000000027D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads