runningrat | 2e16a2bc7674b473da78276b7f7617aa77552d87880df0b5e4017efda60cd279

Analysis

max time kernel
137s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2024 09:20

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General

Target

fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
Size

68KB
MD5

d8f2a7d4fb066f89ff7806603ea0192a
SHA1

f75e9b15ae4c7ab7160cc9e3ae668bcf545af03a
SHA256

fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974
SHA512

6ffaea68d23798bebed122cbc4334c1db1c0cddf3e07beb7a641f1ba91197c2110c7d2f46bb5d57d9db8828230020da71cd7a9df3a6d04514b02fd532cfc2631
SSDEEP

768:BCB8S+OR7dOahyoHokBtqN74W7bZZmYb9PyzcjRlYlwa6NVdkPnJJMIzDV:BHJaAoHoc2x7bZoYBAcQlwJdM3

Score

10^/10

runningrat discovery 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
behavioral2/memory/1784-0-0x0000000010000000-0x000000001000F000-memory.dmp	family_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\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240671406.dll"	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	SRDSL.exe

Loads dropped DLL 4 IoCs

pid	Process
1784	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
1784	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
396	svchost.exe
4900	SRDSL.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe
File created	C:\Windows\SysWOW64\240671406.dll	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
File created	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SRDSL.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 4900	396	svchost.exe	101
PID 396 wrote to memory of 4900	396	svchost.exe	101
PID 396 wrote to memory of 4900	396	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe
"C:\Users\Admin\AppData\Local\Temp\fa8405c6d4f14f21f1e90a918d7fc1dea5fc151c183631751f32146c11198974.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:1784

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:2352

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:396
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\windows\system32\240671406.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4900

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4148,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=3884 /prefetch:8
1⤵
PID:4664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\240671406.dll

Filesize
37KB

MD5
91b930d8f59f58933af8b6114efcd696

SHA1
8bd6853f1f7f445053d6aaf102acb4508d8d8441

SHA256
00178d91d8f23dd478753ad278db03ec55a28903eb4a1832c59264a1e7b44698

SHA512
13a602d245e748e03157ebdf652e5e7c717111766dc4c38160d8d331bb29f97a014426d00f64e7c92f888dc33afd82458241d43422871dc26fb7a7c946504d1e

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/1784-0-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/1784-8-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download