Malware Analysis Report

2024-10-16 04:07

Sample ID 240602-xh8t5sbc6t
Target virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.vir
SHA256 e42d80213ebcfecec9e658ac20303535da2f301903eb28625f10d14f1df79af7
Tags
backdoor trojan dropper berbew
score
10/10

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
10/10

SHA256

e42d80213ebcfecec9e658ac20303535da2f301903eb28625f10d14f1df79af7

Threat Level: Known bad

The file virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.vir was found to be: Known bad.

Malicious Activity Summary

backdoor trojan dropper berbew

Berbew family

Malware Dropper & Backdoor - Berbew

Deletes itself

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: RenamesItself

Suspicious use of UnmapMainImage

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-02 18:52

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: behavioral1

Detonation Overview

Submitted

2024-06-02 18:52

Reported

2024-06-02 18:55

Platform

win7-20240508-en

Max time kernel

120s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.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_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe"

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

Network

N/A

Files

memory/2816-0-0x0000000000400000-0x0000000000439000-memory.dmp

\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

MD5 8c5adc5356ed3873bfca630345d646f3
SHA1 c6e7912f25dfa326e720d8692e554236524f9458
SHA256 16206ee7bf940669ea27992152dd9093815777dba590e656d8219c59238dcbc0
SHA512 12255344733d0e7a8804d1d5cdf481addb2976d0871932d3325eabf8611c2fac74a0d60bdb92e0da44cc1ab707d659d0a82726062ad1c51dea7030d858cc4506

memory/2816-5-0x0000000000130000-0x0000000000169000-memory.dmp

memory/2940-10-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2816-11-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2940-12-0x0000000000400000-0x000000000041A000-memory.dmp

memory/2940-17-0x0000000000130000-0x0000000000169000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 18:52

Reported

2024-06-02 18:55

Platform

win10v2004-20240508-en

Max time kernel

131s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.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_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2716 -ip 2716

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 344

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 5096 -ip 5096

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 364

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4352,i,14486271492189381216,15799931579469722648,262144 --variations-seed-version --mojo-platform-channel-handle=3788 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 129.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp

Files

memory/2716-0-0x0000000000400000-0x0000000000439000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\virussign.com_55416d6abd3b3cd5ebb553b745acf8c0.exe

MD5 7869c212e59db09954f1f184f8e5caa0
SHA1 eb0625fa855172decf5068e9f99eef86af0db8c8
SHA256 9d8ccb745074769b499b309a7126060f08434d50a8482ae27f9243d8083f60c3
SHA512 362f0f7e831832901bd722214a2e72015711d6b89e0a6e1dc8c76794012e9515bb965ccc536ec55cebdef1ee2ea3d2976c55a186823c010d2208fbcd1d8af4ed

memory/5096-7-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2716-6-0x0000000000400000-0x0000000000439000-memory.dmp

memory/5096-8-0x0000000000400000-0x000000000041A000-memory.dmp

memory/5096-13-0x0000000001510000-0x0000000001549000-memory.dmp