runningrat | 96bed5fdefc903bc41e0ffbe328e8ed6cb4c3261dd711b3e3e7b56df45d90135

General

Target

a2d7a570dc6b46bed057743394b59577.exe
Size

48KB
MD5

a2d7a570dc6b46bed057743394b59577
SHA1

4288fb43166954fc551b502585e481f629f89e91
SHA256

96bed5fdefc903bc41e0ffbe328e8ed6cb4c3261dd711b3e3e7b56df45d90135
SHA512

fee4d1bed29187e0298d4b19550827a313e1d1515f742fc8fe52b5dc82cf06bf3915b9e4a00c43d672f2e7b3b146fd1887737446ee9b3e11253967879ddc4898
SSDEEP

768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67RhPC:Ub1MsHz3JDwhyWr+N95OTga6S

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\\259454856.dll"	a2d7a570dc6b46bed057743394b59577.exe

Deletes itself 1 IoCs

pid	Process
2736	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	SySyeu.exe

Loads dropped DLL 7 IoCs

pid	Process
1560	a2d7a570dc6b46bed057743394b59577.exe
2296	svchost.exe
2296	svchost.exe
2812	SySyeu.exe
2812	SySyeu.exe
2812	SySyeu.exe
2812	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a2d7a570dc6b46bed057743394b59577.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
2736	cmd.exe
2768	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2768	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1560	a2d7a570dc6b46bed057743394b59577.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1560	a2d7a570dc6b46bed057743394b59577.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1560	a2d7a570dc6b46bed057743394b59577.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 2736	1560	a2d7a570dc6b46bed057743394b59577.exe	33
PID 1560 wrote to memory of 2736	1560	a2d7a570dc6b46bed057743394b59577.exe	33
PID 1560 wrote to memory of 2736	1560	a2d7a570dc6b46bed057743394b59577.exe	33
PID 1560 wrote to memory of 2736	1560	a2d7a570dc6b46bed057743394b59577.exe	33
PID 2736 wrote to memory of 2768	2736	cmd.exe	35
PID 2736 wrote to memory of 2768	2736	cmd.exe	35
PID 2736 wrote to memory of 2768	2736	cmd.exe	35
PID 2736 wrote to memory of 2768	2736	cmd.exe	35
PID 2296 wrote to memory of 2812	2296	svchost.exe	36
PID 2296 wrote to memory of 2812	2296	svchost.exe	36
PID 2296 wrote to memory of 2812	2296	svchost.exe	36
PID 2296 wrote to memory of 2812	2296	svchost.exe	36

C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe
"C:\Users\Admin\AppData\Local\Temp\a2d7a570dc6b46bed057743394b59577.exe"
1⤵
- Server Software Component: Terminal Services DLL
- 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:1560
- 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\a2d7a570dc6b46bed057743394b59577.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2736
- - 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:2768

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SySyeu"
1⤵
PID:2636

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:2296
- C:\Windows\SysWOW64\SySyeu.exe
  C:\Windows\system32\SySyeu.exe "c:\users\admin\appdata\local\temp\259454856.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2812

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

Remote System Discovery

1

T1018

System Information Discovery

1

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

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Downloads

C:\Windows\SysWOW64\SySyeu.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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\Users\Admin\AppData\Local\Temp\259454856.dll

Filesize
25KB

MD5
db598538e7a70b73298f6424ae507e02

SHA1
d06a04fb9ca1bb8da5974870196ae5c0eadc1fa9

SHA256
cc4ab82995b0c0c827e99870948ef6a1371d4d1ed6d167a087c0d5c123d0f15e

SHA512
ebedb94e2ba77836317596557fb447e6abc78fecfafce8de900d70202994fe829459665e0dec8813c51039b64a12d08258bc6074324b729994b61e8467f5e3fa

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Analysis

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