runningrat | 331a562953f7da86fb6fc344a1c27c49051105177f8ff8661058d801d8f12802

Analysis

max time kernel
139s
max time network
150s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
16/06/2024, 02:37

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General

Target
8989.exe
Size 48KB
Sample240616-c4lxaawdpg
SHA256 f59d23fcb44d07bd1cfc3852bc17b60cc4c35a21a66125953d6f5f697131a521
MD5 7d8056785948284e8f6b89004886c936
SHA1 fb954f84b2c0afffb5e788b04029563685054dee
SHA512 dc11f4669102af7fa6f5b44ead415e12317d65d2847f806a1ffc92a3b5a626a0c74d2c49592b7259f56a0299748a8599e5ab6983b7dec335a04106d44312aa06
SSDEEP 768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67ChPC:Ub1MsHz3JDwhyWr+N95OTga6R
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

runningrat persistence rat

Malware Config

Signatures

RunningRat
RunningRat is a remote access trojan first seen in 2018.
rat 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\SRDSL\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\240608515.dll"	8989.exe

Executes dropped EXE 1 IoCs

pid	Process
3400	SRDSL.exe

Loads dropped DLL 3 IoCs

pid	Process
4880	8989.exe
4956	svchost.exe
3400	SRDSL.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

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

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
872	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4880	8989.exe
4880	8989.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4880	8989.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4880	8989.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 1152	4880	8989.exe	75
PID 4880 wrote to memory of 1152	4880	8989.exe	75
PID 4880 wrote to memory of 1152	4880	8989.exe	75
PID 1152 wrote to memory of 872	1152	cmd.exe	77
PID 1152 wrote to memory of 872	1152	cmd.exe	77
PID 1152 wrote to memory of 872	1152	cmd.exe	77
PID 4956 wrote to memory of 3400	4956	svchost.exe	78
PID 4956 wrote to memory of 3400	4956	svchost.exe	78
PID 4956 wrote to memory of 3400	4956	svchost.exe	78

C:\Users\Admin\AppData\Local\Temp\8989.exe
"C:\Users\Admin\AppData\Local\Temp\8989.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4880
- 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\8989.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1152
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:872

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:1940

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\users\admin\appdata\local\temp\240608515.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3400

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

SRDSL.exe

Path C:\Windows\SysWOW64\SRDSL.exe
Size 59KB
SHA256 2be981b3686ee5e725583f5936f5f0a0992723cad784457f91d9d1d5a15a0852
MD5 f57886ace1ab4972b0308f69b1a0029c
SHA1 519b2a981cb522ed2b0901f9871f9aa9781a6cd5
SHA512 c2b3f016a8c3993771cd5709e469c9dedfa1dd35047691de5e853e2ad0ac025ec210fc6cb662c82d08f62e2c889e5060e796414a4eaf6a6c1719cdd7e5debdf8
SSDEEP 768:ZE4kM/YtA7Fnl7vL6D/tq1oe60DRvbSEln5IyYpamDjobj8SbW:Zk1mBl6DwoADRBln5IUmDjoXfW
MD5 SHA1 SHA512 SSDEEP

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240608515.dll

Path \Users\Admin\AppData\Local\Temp\240608515.dll
Size 25KB
SHA256 45a684f6b92724df6d38f9e71b65013ca7d1c588dd5d85df5039e50d70993ff7
MD5 6a7114eb7f0ab9a6406ef61947aed405
SHA1 b9b73a30867a32d84dd4586330b451fca611c90d
SHA512 6437a6e046b0746cae987d5b7f291bb510db378cab9796ce98d799c221bdb48aa3382197507792cdc38babdf7875dd9134bd7167c3a6f2acc85e1c91534dc8b8
SSDEEP 384:8T9IWqIwt10zr6lXYhCRdkyurLmC2S1xJrQcWrH/RUAMO0MY0holUxHdWq4tKDES:8ht+Izr6pqRrLuS1vzWpaGZHdKYDG
MD5 SHA1 SHA512 SSDEEP

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