e6ff0b90662e2720c18345c30722ee6128c27dcc85acee4d8ee9c785b9bc44ff

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24-02-2024 10:32

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General

Target

RkSrv.exe
Size

1.6MB
MD5

0018db3612226940c06d12dea767c9ab
SHA1

dcc5f86428edbc38716730de647647bd28f7cac6
SHA256

140c20bd67a0e4eed979ce22c855b80f171217cf0edf2c2875647cae7e2421d8
SHA512

b222b3df8c011132a3bf87e40261eaa9aa58e7a0d79faa087b75a5c3d92596cd6989b6883f001a77880e8ca9727837e75446a0683c4b2726a3720575d5639df4
SSDEEP

49152:uhlqm/a96hZ+marOl9+e0e5MAuVTs2CdgJQE7Szfj7oM9a6Qo6GTXU:u7qm1CmarOl98e5MXVTs2CWJXCfvoM9e

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2828415587-3732861812-1919322417-1000_Classes\Local Settings	RkSrv.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4928	RkSrv.exe
4928	RkSrv.exe
4928	RkSrv.exe
4928	RkSrv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	RkSrv.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 3252	4928	RkSrv.exe	46

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3252
- C:\Users\Admin\AppData\Local\Temp\RkSrv.exe
  "C:\Users\Admin\AppData\Local\Temp\RkSrv.exe"
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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