Malware Analysis Report

2024-10-19 07:06

Sample ID 231225-els9rafbb7
Target The Summer Waifu.exe
SHA256 9d15283240ff79899aeb0f2866c51b75d953e5c04a8069397734a3cb6aef87af
Tags
marsstealer default stealer spyware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
10/10

SHA256

9d15283240ff79899aeb0f2866c51b75d953e5c04a8069397734a3cb6aef87af

Threat Level: Known bad

The file The Summer Waifu.exe was found to be: Known bad.

Malicious Activity Summary

marsstealer default stealer spyware

Mars Stealer

Executes dropped EXE

Checks computer location settings

Reads user/profile data of web browsers

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-25 04:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-25 04:02

Reported

2023-12-25 04:04

Platform

win7-20231215-en

Max time kernel

72s

Max time network

76s

Command Line

"C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"

Signatures

Mars Stealer

stealer marsstealer

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Identities\CKTI.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe

"C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"

C:\Users\Admin\AppData\Roaming\Identities\CKTI.exe

"C:\Users\Admin\AppData\Roaming\Identities\CKTI.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 moscow-post.com udp
RU 185.71.67.60:80 moscow-post.com tcp
RU 185.71.67.60:80 moscow-post.com tcp
US 8.8.8.8:53 www.moscow-post.com udp
RU 185.71.67.60:80 www.moscow-post.com tcp
US 8.8.8.8:53 www.moscow-post.su udp
RU 185.71.67.60:80 www.moscow-post.su tcp

Files

memory/2456-0-0x0000000001190000-0x0000000001204000-memory.dmp

memory/2456-1-0x0000000074D00000-0x00000000753EE000-memory.dmp

memory/2456-2-0x0000000004EA0000-0x0000000004EE0000-memory.dmp

C:\Users\Admin\AppData\Roaming\Identities\CKTI.exe

MD5 ccbede8d2869535347316a479f0b8095
SHA1 1dd0e7574972260c77ca90638950d83c7b00d8f2
SHA256 afae663cab910a67e7fb519797ff385926b77ee59fa0e96e1853318146d2e179
SHA512 9a0de846ced51215948a16300aec8aeb7cf0ef5c0005a3cb661fc27e85b5d25b3b3278e7c91fbedc9d0a1ec686fdcd8ff07f35b39931a7c28c8b2139dabf4456

memory/2456-14-0x0000000000C50000-0x0000000000C8D000-memory.dmp

memory/2456-15-0x0000000074D00000-0x00000000753EE000-memory.dmp

memory/2172-13-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2456-12-0x0000000000C50000-0x0000000000C8D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-25 04:02

Reported

2023-12-25 04:04

Platform

win10v2004-20231222-en

Max time kernel

92s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"

Signatures

Mars Stealer

stealer marsstealer

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Adobe\U54.exe N/A

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Roaming\Adobe\U54.exe

Processes

C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe

"C:\Users\Admin\AppData\Local\Temp\The Summer Waifu.exe"

C:\Users\Admin\AppData\Roaming\Adobe\U54.exe

"C:\Users\Admin\AppData\Roaming\Adobe\U54.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2248 -ip 2248

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 1216

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 moscow-post.com udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 moscow-post.com udp
RU 185.71.67.60:80 moscow-post.com tcp
US 8.8.8.8:53 www.moscow-post.com udp
RU 185.71.67.60:80 www.moscow-post.com tcp
US 8.8.8.8:53 60.67.71.185.in-addr.arpa udp
US 8.8.8.8:53 www.moscow-post.su udp
RU 185.71.67.60:80 www.moscow-post.su tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/4956-0-0x0000000000390000-0x0000000000404000-memory.dmp

memory/4956-1-0x0000000074B40000-0x00000000752F0000-memory.dmp

memory/4956-2-0x0000000004F40000-0x0000000004F50000-memory.dmp

C:\Users\Admin\AppData\Roaming\Adobe\U54.exe

MD5 ccbede8d2869535347316a479f0b8095
SHA1 1dd0e7574972260c77ca90638950d83c7b00d8f2
SHA256 afae663cab910a67e7fb519797ff385926b77ee59fa0e96e1853318146d2e179
SHA512 9a0de846ced51215948a16300aec8aeb7cf0ef5c0005a3cb661fc27e85b5d25b3b3278e7c91fbedc9d0a1ec686fdcd8ff07f35b39931a7c28c8b2139dabf4456

memory/2248-12-0x0000000000400000-0x000000000043D000-memory.dmp

memory/4956-13-0x0000000074B40000-0x00000000752F0000-memory.dmp

memory/2248-15-0x0000000000400000-0x000000000043D000-memory.dmp