runningrat | d536aae3b7468b7598e0e5e39e004bc26a087b81e68c3fdf9205762f2bb6782a

General

Target

ysme.exe
Size

68KB
MD5

63e89bf274c20c083a0fe769e948e2b4
SHA1

ffe988132fc4e69e782f3fc9da8e13c281d1b302
SHA256

d536aae3b7468b7598e0e5e39e004bc26a087b81e68c3fdf9205762f2bb6782a
SHA512

108e8eccba50e0bc91ececd68fdfb3019e42f2d6be04885a29c5b81f288803eebc619a3ec00cf6458b87038d62bfe63ce9c642627742fded111890b3b5fc9c6b
SSDEEP

768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMIIV:BHJaAoHoc2x7bZoYBAcQlwJdMY

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/2216-0-0x0000000010000000-0x000000001000F000-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\NETRUDDL\Parameters\ServiceDll = "C:\\Windows\\system32\\259412783.dll"	ysme.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	NETRUDDL.exe

Loads dropped DLL 7 IoCs

pid	Process
2216	ysme.exe
3040	svchost.exe
3040	svchost.exe
2704	NETRUDDL.exe
2704	NETRUDDL.exe
2704	NETRUDDL.exe
2704	NETRUDDL.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\259412783.dll	ysme.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	ysme.exe
File created	C:\Windows\SysWOW64\NETRUDDL.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\NETRUDDL.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	NETRUDDL.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	NETRUDDL.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2704	3040	svchost.exe	30
PID 3040 wrote to memory of 2704	3040	svchost.exe	30
PID 3040 wrote to memory of 2704	3040	svchost.exe	30
PID 3040 wrote to memory of 2704	3040	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\ysme.exe
"C:\Users\Admin\AppData\Local\Temp\ysme.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
PID:2216

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUDDL"
1⤵
PID:2156

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "NETRUDDL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\NETRUDDL.exe
  C:\Windows\system32\NETRUDDL.exe "c:\windows\system32\259412783.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:2704

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
741a4fc3c8cce4d60d602f58cf3ebc3a

SHA1
d936fa073b66330a2da4e1dd04a04bd212f8e4a0

SHA256
27af54cc90e01244ff8a4ed2b7cc112dd7385a1c6fee4236eb85187c001ba72e

SHA512
dc55c5c65a41cd5552213803b2f0701ecaf6c352ac2736d408b11a456d3fb46a6b5a66330a23f592685130dfe7213842f6112dfd50fe9dcbdfe19affeee23b10

Download Submit
\Windows\SysWOW64\259412783.dll

Filesize
37KB

MD5
09eb4fd3bf9dc0c551ef0018de949a4b

SHA1
c610bc0276fadcb79a0895baa5b908f43ee996cb

SHA256
50f45124d1d5e8d433ff30baba0d242071d7f19231bdd54e2a498ef66721732e

SHA512
bc8a0d77b54542cb914692fe1a1eb0d92e5c75f7ecb1a595ff37b0c4c05d29d8a69e5d5d6f4bd65ccbec78e832d9c4cc546f43f0c9e29c059b5cd8cf46904d8c

Download Submit
\Windows\SysWOW64\NETRUDDL.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2216-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2216-6-0x0000000000260000-0x000000000026D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads