Malware Analysis Report

2024-10-16 05:00

Sample ID 240602-mldhasae7w
Target virussign.com_60a44760389917019a27a58bf61b7040.vir
SHA256 66e2a59c7b388966923e6795628903f8c0f68606809292e748110a369c158dce
Tags
backdoor trojan dropper berbew
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

66e2a59c7b388966923e6795628903f8c0f68606809292e748110a369c158dce

Threat Level: Known bad

The file virussign.com_60a44760389917019a27a58bf61b7040.vir was found to be: Known bad.

Malicious Activity Summary

backdoor trojan dropper berbew

Berbew family

Malware Dropper & Backdoor - Berbew

Executes dropped EXE

Loads dropped DLL

Deletes itself

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-02 10:32

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 10:32

Reported

2024-06-02 10:35

Platform

win7-20240221-en

Max time kernel

120s

Max time network

132s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.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_60a44760389917019a27a58bf61b7040.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe"

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.3.235:443 pastebin.com tcp

Files

memory/1688-0-0x0000000000400000-0x00000000004EF000-memory.dmp

\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

MD5 5c924636d93dff5c0dc40ce7731c36f7
SHA1 ab82742e5912bcb6f51c36b506b97926a6e8d1f7
SHA256 efdbd3368bc06e8c19bffd21bdce6a358502bb029cb66cee0edbffa743b53ca4
SHA512 8470f144f828b76a163d7c712201f7c6fdaf8f702b58b98145ed4f6862bc01598ff0df609f1a4163cc018b41a43b87e3a19171623daad4026ea5d718cf3cd245

memory/1688-7-0x0000000000400000-0x00000000004EF000-memory.dmp

memory/1744-9-0x0000000000400000-0x00000000004EF000-memory.dmp

memory/1744-10-0x0000000000400000-0x00000000004A3000-memory.dmp

memory/1744-16-0x0000000002F00000-0x0000000002FEF000-memory.dmp

memory/1744-38-0x000000000FCB0000-0x000000000FD53000-memory.dmp

memory/1744-32-0x0000000000400000-0x0000000000443000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 10:32

Reported

2024-06-02 10:35

Platform

win10v2004-20240508-en

Max time kernel

134s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.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_60a44760389917019a27a58bf61b7040.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

"C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 736 -ip 736

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 352

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 344

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 628

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 648

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 688

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 924

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1404

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1480

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1652

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1492

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1636

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1640

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=3760,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=4376 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1536

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3680 -ip 3680

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 672

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 224.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.3.235:443 pastebin.com tcp
US 8.8.8.8:53 235.3.20.104.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 67.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 9.179.89.13.in-addr.arpa udp

Files

memory/736-0-0x0000000000400000-0x00000000004EF000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\virussign.com_60a44760389917019a27a58bf61b7040.exe

MD5 1295dc54fd8973a286a0675692d51632
SHA1 d5f557e9bfbc96ce15637cd807193b8961db16d3
SHA256 b78454036079f7e30fe74bf0fc8c0fc38e54710508bc8d7e82b8fc6296c14df3
SHA512 769ac4fcbd397b934cf1dbe235c4c908af75518fc7110d9536cf12a5deaac80a1a18078c83b6096ddff5a32f7b6ba869fc317ad6a2e970a2580ad767015569ac

memory/736-6-0x0000000000400000-0x00000000004EF000-memory.dmp

memory/3680-7-0x0000000000400000-0x00000000004EF000-memory.dmp

memory/3680-8-0x0000000000400000-0x00000000004A3000-memory.dmp

memory/3680-14-0x0000000005100000-0x00000000051EF000-memory.dmp

memory/3680-22-0x0000000000400000-0x0000000000443000-memory.dmp

memory/3680-27-0x000000000B980000-0x000000000BA23000-memory.dmp