Malware Analysis Report

2024-10-18 23:50

Sample ID 231016-seepnshc51
Target mesoc
SHA256 e87928fcddf13935c91a0b5577e28efd29bb6a5c1d98e5129dec63e231601053
Tags
icedid 3828440134 banker loader persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

e87928fcddf13935c91a0b5577e28efd29bb6a5c1d98e5129dec63e231601053

Threat Level: Known bad

The file mesoc was found to be: Known bad.

Malicious Activity Summary

icedid 3828440134 banker loader persistence trojan

IcedID, BokBot

Modifies Installed Components in the registry

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Opens file in notepad (likely ransom note)

Suspicious use of WriteProcessMemory

Modifies registry class

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-16 15:02

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-16 15:02

Reported

2023-10-16 15:06

Platform

win10v2004-20230915-en

Max time kernel

145s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\mesoc.dll,#1

Signatures

Opens file in notepad (likely ransom note)

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1436 wrote to memory of 1740 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 1436 wrote to memory of 1740 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\mesoc.dll,#1

C:\Windows\system32\cmd.exe

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

C:\Windows\system32\NOTEPAD.EXE

"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GetDeny.txt

C:\Windows\system32\rundll32.exe

rundll32 mesoc.dll scab /k haval462

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 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 38.148.119.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 254.5.248.8.in-addr.arpa udp
US 8.8.8.8:53 13.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-16 15:02

Reported

2023-10-16 15:06

Platform

win7-20230831-en

Max time kernel

122s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\mesoc.dll,#1

Signatures

IcedID, BokBot

trojan banker icedid

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Active Setup\Installed Components C:\Windows\explorer.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000_Classes\Local Settings C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell C:\Windows\explorer.exe N/A
Key created \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots C:\Windows\explorer.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff C:\Windows\explorer.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\explorer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2932 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2932 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2932 wrote to memory of 2988 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\WerFault.exe
PID 2804 wrote to memory of 1896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2804 wrote to memory of 1896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2804 wrote to memory of 1896 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\mesoc.dll,#1

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2932 -s 100

C:\Windows\system32\cmd.exe

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

C:\Windows\system32\rundll32.exe

rundll32 mesoc.dll scab /k haval462

C:\Windows\explorer.exe

explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 aptekoagraliy.com udp
US 188.114.97.0:80 aptekoagraliy.com tcp

Files

memory/1896-0-0x0000000000120000-0x0000000000124000-memory.dmp

memory/1260-1-0x0000000077932000-0x0000000077933000-memory.dmp

memory/1260-2-0x0000000180000000-0x0000000180009000-memory.dmp

memory/1260-9-0x0000000180000000-0x0000000180009000-memory.dmp

memory/1260-10-0x00000000029E0000-0x00000000029E1000-memory.dmp

memory/2316-11-0x0000000004190000-0x0000000004191000-memory.dmp

memory/2316-12-0x0000000004190000-0x0000000004191000-memory.dmp