Malware Analysis Report

2024-10-16 04:42

Sample ID 240602-lc2yvshg54
Target virussign.com_f4ff43e83bfb07433607639c71b4b3e0.vir
SHA256 52127c33c9ad7cfcb155bfeb0e4b0f99c5f62ab5f9674215051da794fb1c9784
Tags
backdoor dropper trojan berbew
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

52127c33c9ad7cfcb155bfeb0e4b0f99c5f62ab5f9674215051da794fb1c9784

Threat Level: Known bad

The file virussign.com_f4ff43e83bfb07433607639c71b4b3e0.vir was found to be: Known bad.

Malicious Activity Summary

backdoor dropper trojan berbew

Malware Dropper & Backdoor - Berbew

Berbew family

Deletes itself

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Program crash

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-02 09:24

Signatures

Berbew family

berbew

Malware Dropper & Backdoor - Berbew

backdoor trojan dropper
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 09:24

Reported

2024-06-02 09:26

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"

Signatures

Malware Dropper & Backdoor - Berbew

backdoor trojan dropper
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4284 -ip 4284

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4284 -s 208

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2092 -ip 2092

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 344

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2092 -ip 2092

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 156

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 136.71.105.51.in-addr.arpa udp

Files

memory/4284-0-0x0000000000400000-0x00000000004F0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

MD5 eec981c3f266ccd31df7503744c8cae0
SHA1 a756afee79cef3ed28f6f7d95af8eec60daaa698
SHA256 84f40d34a4c3fe6a6e04fa75eb25e96e295f216204d9e153a3b5b4993e4f45c5
SHA512 6d2c649eb2b283364f656fd3046e5255ec535c52bf455567427b0b82b2e6cd83be173c0fb09bb264b7c5ea05f6441ec0237fc9643b78e7b42c0310d73ce8f7bc

memory/2092-7-0x0000000000400000-0x00000000004F0000-memory.dmp

memory/4284-6-0x0000000000400000-0x00000000004F0000-memory.dmp

memory/2092-8-0x0000000000400000-0x00000000004F0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-02 09:24

Reported

2024-06-02 09:26

Platform

win7-20240221-en

Max time kernel

117s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"

Signatures

Malware Dropper & Backdoor - Berbew

backdoor trojan dropper
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe"

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

Network

N/A

Files

memory/3012-0-0x0000000000400000-0x00000000004F0000-memory.dmp

\Users\Admin\AppData\Local\Temp\virussign.com_f4ff43e83bfb07433607639c71b4b3e0.exe

MD5 d7cb00b2c7578fd280e7100e1263e7c7
SHA1 37209528f47c7bb64980d58a6707934636572e65
SHA256 6a32f9b5db26c01bebecec4a3d7ac02de56d2a46828019f534cecd4e01fae88a
SHA512 97a8e6ee0235a14df304064281aa3603420cf5c583ccd3963ffddbbf227aaa3decfd2e96de2d91736a8db88865d3d78577b6e683b2d61c4e938382cf3fdb35bb

memory/3016-10-0x0000000000400000-0x00000000004F0000-memory.dmp

memory/3016-9-0x0000000000400000-0x00000000004F0000-memory.dmp

memory/3012-8-0x0000000000400000-0x00000000004F0000-memory.dmp