0b432f20d54647f077811ecb1df4dbc64fb17fbd6a9e0cce4ac9437d5f7891fb

Resubmissions

18-03-2024 22:36

240318-2h9hwsba88 10

Analysis

max time kernel
1378s
max time network
1176s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18-03-2024 22:36

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General

Target

Ransomware/Rensenware.exe
Size

96KB
MD5

60335edf459643a87168da8ed74c2b60
SHA1

61f3e01174a6557f9c0bfc89ae682d37a7e91e2e
SHA256

7bf5623f0a10dfa148a35bebd899b7758612f1693d2a9910f716cf15a921a76a
SHA512

b4e5e4d4f0b4a52243d6756c66b4fe6f4b39e64df7790072046e8a3dadad3a1be30b8689a1bab8257cc35cb4df652888ddf62b4e1fccb33e1bbf1f5416d73efb
SSDEEP

3072:kGXc7vE4k8sWJnmiWpJtCkGwJ1ED7qztG:RXD8sWBmiW0wX6Gx

Score

7^/10

spyware stealer

Malware Config

Signatures

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dw20.exe

description pid process

Token: SeBackupPrivilege 4592 dw20.exe
Token: SeBackupPrivilege 4592 dw20.exe

description	pid	process
Token: SeBackupPrivilege	4592	dw20.exe
Token: SeBackupPrivilege	4592	dw20.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

Rensenware.exe

description	pid	process	target process
PID 3508 wrote to memory of 4592	3508	Rensenware.exe	dw20.exe
PID 3508 wrote to memory of 4592	3508	Rensenware.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\Ransomware\Rensenware.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\Rensenware.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3508

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 840
2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4592

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/3508-0-0x00007FFAC5D10000-0x00007FFAC66B1000-memory.dmp

Filesize
9.6MB

Download
memory/3508-1-0x00000000016A0000-0x00000000016B0000-memory.dmp

Filesize
64KB

Download
memory/3508-2-0x00007FFAC5D10000-0x00007FFAC66B1000-memory.dmp

Filesize
9.6MB

Download
memory/3508-3-0x000000001C050000-0x000000001C51E000-memory.dmp

Filesize
4.8MB

Download
memory/3508-4-0x000000001C5C0000-0x000000001C65C000-memory.dmp

Filesize
624KB

Download
memory/3508-31-0x00007FFAC5D10000-0x00007FFAC66B1000-memory.dmp

Filesize
9.6MB

Download