Malware Analysis Report

2025-01-18 00:23

Sample ID 240613-lrn1jstclb
Target 2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk
SHA256 425d1f3aad3ff2137d34860558ade22a3bcb720b374ec2b8f21c0f25e344593b
Tags
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

425d1f3aad3ff2137d34860558ade22a3bcb720b374ec2b8f21c0f25e344593b

Threat Level: Shows suspicious behavior

The file 2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk was found to be: Shows suspicious behavior.

Malicious Activity Summary


Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-13 09:46

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 09:46

Reported

2024-06-13 09:48

Platform

win7-20240611-en

Max time kernel

118s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe"

Network

N/A

Files

memory/2084-0-0x0000000140000000-0x0000000140273000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 09:46

Reported

2024-06-13 09:48

Platform

win10v2004-20240611-en

Max time kernel

91s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\System32\alg.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\alg.exe C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_0051ff4ca0bc03982a2aa5cbbb43fc20_ryuk.exe"

C:\Windows\System32\alg.exe

C:\Windows\System32\alg.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 131.253.33.237:443 g.bing.com tcp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
BE 2.17.107.112:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 237.33.253.131.in-addr.arpa udp
US 8.8.8.8:53 112.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp

Files

memory/2984-0-0x0000000140000000-0x0000000140273000-memory.dmp

memory/2984-1-0x0000000000440000-0x00000000004A0000-memory.dmp

memory/2984-9-0x0000000000440000-0x00000000004A0000-memory.dmp

memory/2984-12-0x0000000000440000-0x00000000004A0000-memory.dmp

memory/2984-14-0x0000000140000000-0x0000000140273000-memory.dmp

C:\Windows\System32\alg.exe

MD5 9004512df9eef84cb8b4a978d7c1eca6
SHA1 f275d4b7c2743046afaec19d7017f47f657fb390
SHA256 01c460e5d46315de7ef6dfee90360f249ca33c387ce5321e5c2f124f1af12e2c
SHA512 c2a8ea384c72c5a88c3adf61ff5fe79e3176f119b34d333ac6caa593797dab94cf8af54233f9ad05533e622b1cee35077c069b11cf9317ceed7bb69930d1a90b

memory/1732-16-0x0000000140000000-0x000000014021B000-memory.dmp

memory/1732-17-0x0000000140000000-0x000000014021B000-memory.dmp