Malware Analysis Report

2025-01-19 07:27

Sample ID 231105-2aba5adf4s
Target NEAS.5a696aff92e17e6f267bf5813a46ea90.exe
SHA256 fb86575717c9dde3814f8be94e4ce40bda55e46933e3d2a9837061de091fcce4
Tags
persistence dropper trojan berbew tinba banker
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

fb86575717c9dde3814f8be94e4ce40bda55e46933e3d2a9837061de091fcce4

Threat Level: Known bad

The file NEAS.5a696aff92e17e6f267bf5813a46ea90.exe was found to be: Known bad.

Malicious Activity Summary

persistence dropper trojan berbew tinba banker

Berbew family

Malware Backdoor - Berbew

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-05 22:22

Signatures

Berbew family

berbew

Malware Backdoor - Berbew

persistence dropper trojan
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

2023-11-05 22:22

Reported

2023-11-05 22:36

Platform

win7-20231025-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Windows\system32\Dwm.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Windows\CurrentVersion\Run\9CAFD9BA = "C:\\Users\\Admin\\AppData\\Roaming\\9CAFD9BA\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Processes

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.5a696aff92e17e6f267bf5813a46ea90.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.5a696aff92e17e6f267bf5813a46ea90.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 216.218.185.162:80 elitiorecfreetoo.cc tcp

Files

memory/284-0-0x0000000004460000-0x0000000005562000-memory.dmp

memory/284-1-0x0000000001E30000-0x0000000001E31000-memory.dmp

memory/284-2-0x0000000004460000-0x0000000005562000-memory.dmp

memory/284-3-0x0000000001E30000-0x0000000001E31000-memory.dmp

memory/284-6-0x0000000005870000-0x0000000006270000-memory.dmp

memory/2792-8-0x0000000000110000-0x0000000000116000-memory.dmp

memory/2792-10-0x00000000007F0000-0x0000000000806000-memory.dmp

memory/1252-11-0x0000000002950000-0x0000000002956000-memory.dmp

memory/2792-9-0x0000000000110000-0x0000000000116000-memory.dmp

memory/1252-7-0x0000000002950000-0x0000000002956000-memory.dmp

memory/1252-5-0x0000000002950000-0x0000000002956000-memory.dmp

memory/1252-13-0x0000000077541000-0x0000000077542000-memory.dmp

memory/2792-14-0x00000000776EF000-0x00000000776F0000-memory.dmp

memory/2792-12-0x0000000000110000-0x0000000000116000-memory.dmp

memory/2792-15-0x00000000776EF000-0x00000000776F1000-memory.dmp

memory/2792-16-0x00000000776F0000-0x00000000776F1000-memory.dmp

memory/284-18-0x0000000000400000-0x000000000043D000-memory.dmp

memory/284-19-0x0000000005870000-0x0000000006270000-memory.dmp

memory/1132-21-0x0000000001D50000-0x0000000001D56000-memory.dmp

memory/1188-24-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1132-25-0x0000000001D50000-0x0000000001D56000-memory.dmp

memory/1252-30-0x00000000029B0000-0x00000000029B6000-memory.dmp

memory/1188-29-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1252-32-0x00000000029B0000-0x00000000029B6000-memory.dmp

memory/1132-27-0x0000000077541000-0x0000000077542000-memory.dmp

memory/2792-34-0x00000000001C0000-0x00000000001C6000-memory.dmp

memory/2792-35-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2792-36-0x00000000001C0000-0x00000000001C6000-memory.dmp

memory/2792-37-0x00000000001A0000-0x00000000001A1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-05 22:22

Reported

2023-11-05 22:39

Platform

win10v2004-20231023-en

Max time kernel

40s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.5a696aff92e17e6f267bf5813a46ea90.exe"

Signatures

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1a\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" C:\Windows\System32\svchost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\NEAS.5a696aff92e17e6f267bf5813a46ea90.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.5a696aff92e17e6f267bf5813a46ea90.exe"

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 48.101.122.92.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 254.22.238.8.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp

Files

memory/3948-1-0x0000000004540000-0x0000000005642000-memory.dmp

memory/3948-2-0x00000000024E0000-0x00000000024E1000-memory.dmp

memory/3948-3-0x0000000004540000-0x0000000005642000-memory.dmp