Malware Analysis Report

2024-11-30 09:19

Sample ID 231226-rjs77adffk
Target 74c58bb31f4434bd81b67d9d5e9093c9
SHA256 8dc8ce02d710e0b9c80b8fbe76407b113bacb15ec724ef06e5871558f97d3064
Tags
fakeav spyware fakeav persistence
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

8dc8ce02d710e0b9c80b8fbe76407b113bacb15ec724ef06e5871558f97d3064

Threat Level: Known bad

The file 74c58bb31f4434bd81b67d9d5e9093c9 was found to be: Known bad.

Malicious Activity Summary

fakeav spyware fakeav persistence

FakeAV payload

Fakeav family

FakeAV, RogueAntivirus

FakeAV payload

Adds Run key to start application

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-26 14:13

Signatures

FakeAV payload

fakeav spyware
Description Indicator Process Target
N/A N/A N/A N/A

Fakeav family

fakeav

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-26 14:13

Reported

2023-12-28 01:15

Platform

win7-20231129-en

Max time kernel

140s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe"

Signatures

FakeAV, RogueAntivirus

fakeav spyware fakeav

FakeAV payload

fakeav spyware
Description Indicator Process Target
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE" C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE" C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\CSRLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
File opened for modification C:\Windows\SysWOW64\CSRLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\MSBLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
File opened for modification C:\Windows\MSBLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe

"C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe"

Network

N/A

Files

memory/2180-0-0x0000000000100000-0x0000000000101000-memory.dmp

memory/2180-5-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/2180-7-0x0000000000100000-0x0000000000101000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-26 14:13

Reported

2023-12-28 01:16

Platform

win10v2004-20231215-en

Max time kernel

145s

Max time network

158s

Command Line

"C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe"

Signatures

FakeAV, RogueAntivirus

fakeav spyware fakeav

FakeAV payload

fakeav spyware
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CSRLT.EXE = "C:\\Windows\\system32\\CSRLT.EXE" C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\MSBLT.EXE = "C:\\Windows\\MSBLT.EXE" C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\CSRLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
File opened for modification C:\Windows\SysWOW64\CSRLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\MSBLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A
File created C:\Windows\MSBLT.EXE C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe

"C:\Users\Admin\AppData\Local\Temp\74c58bb31f4434bd81b67d9d5e9093c9.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
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 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/696-0-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/696-1-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/696-2-0x0000000000620000-0x0000000000621000-memory.dmp

memory/696-7-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/696-10-0x0000000000620000-0x0000000000621000-memory.dmp