runningrat | f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b

General

Target

f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe
Size

48KB
MD5

e123613672abc38913dcd968faecea29
SHA1

626e7906b9d344c97d74223e31c5953eb7222d74
SHA256

f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b
SHA512

19d7d25aa5e38bc330cd43a74346ce7d964cad9d0d4b4f270dea0905bd15b39c48e3cf54cb2a9957c1ccc3df95da82325fdd065299b2fb80dde8d4677d2ced96
SSDEEP

768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67FhPC:Ub1MsHz3JDwhyWr+N95OTga6G

Score

10^/10

runningrat discovery persistence rat

Malware Config

Signatures

RunningRat
RunningRat is a remote access trojan first seen in 2018.
rat runningrat

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SySyeu\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240621484.dll"	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe

Executes dropped EXE 1 IoCs

pid	Process
3112	SySyeu.exe

Loads dropped DLL 3 IoCs

pid	Process
1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe
2852	svchost.exe
3112	SySyeu.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SySyeu.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\SySyeu.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SySyeu.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4188	cmd.exe
4280	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4280	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe
1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 4188	1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe	84
PID 1352 wrote to memory of 4188	1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe	84
PID 1352 wrote to memory of 4188	1352	f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe	84
PID 4188 wrote to memory of 4280	4188	cmd.exe	86
PID 4188 wrote to memory of 4280	4188	cmd.exe	86
PID 4188 wrote to memory of 4280	4188	cmd.exe	86
PID 2852 wrote to memory of 3112	2852	svchost.exe	87
PID 2852 wrote to memory of 3112	2852	svchost.exe	87
PID 2852 wrote to memory of 3112	2852	svchost.exe	87

C:\Users\Admin\AppData\Local\Temp\f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe
"C:\Users\Admin\AppData\Local\Temp\f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Checks computer location settings
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\f1cf2b82b0ec58426d7983e939d0989ad7bd5425993012eab4455c6ad0bbe22b.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4280

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SySyeu"
1⤵
PID:3856

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SySyeu"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\SysWOW64\SySyeu.exe
  C:\Windows\system32\SySyeu.exe "c:\users\admin\appdata\local\temp\240621484.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\240621484.dll

Filesize
25KB

MD5
689bd62c2a904d7a480b6a2317e84eb2

SHA1
f7fbd895d5aab47f936d1df8d6ae84bce0e9239f

SHA256
18cbd8475a2050f428a62c1c743484eceaea01bd5048b20adacac6600c0aff27

SHA512
703ee8f8e675e7a99bafa921388ae6bbb2833e5ac2710eafd09dc0121598e6f20e5a2fe4df1d7e20a2a93481a8478be4b4f834ef062be2b47b00a7f080a47bf9

Download Submit
C:\Windows\SysWOW64\SySyeu.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit

Analysis

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