Malware Analysis Report

2024-11-30 23:24

Sample ID 230912-svq3msgc76
Target wim32.dll
SHA256 33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7
Tags
systembc
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

33626834ce190f58584d566022ca50ff38f6b34d0231944ef0d27bd7ab7ae6b7

Threat Level: Known bad

The file wim32.dll was found to be: Known bad.

Malicious Activity Summary

systembc

Systembc family

Blocklisted process makes network request

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-09-12 15:27

Signatures

Systembc family

systembc

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-12 15:27

Reported

2023-09-12 15:29

Platform

win7-20230831-en

Max time kernel

119s

Max time network

134s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

Signatures

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2440 wrote to memory of 1592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

Network

Country Destination Domain Proto
US 45.61.136.241:4001 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-12 15:27

Reported

2023-09-12 15:29

Platform

win10v2004-20230831-en

Max time kernel

142s

Max time network

154s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

Signatures

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 312 wrote to memory of 4692 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 312 wrote to memory of 4692 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 312 wrote to memory of 4692 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\wim32.dll,#1

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

Network

Country Destination Domain Proto
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 135.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 45.61.136.241:4001 tcp
US 8.8.8.8:53 241.136.61.45.in-addr.arpa udp
US 8.8.8.8:53 126.132.60.8.in-addr.arpa udp
US 8.8.8.8:53 136.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 126.21.238.8.in-addr.arpa udp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

memory/388-0-0x000001EB85440000-0x000001EB85450000-memory.dmp

memory/388-16-0x000001EB85540000-0x000001EB85550000-memory.dmp

memory/388-32-0x000001EB8DB20000-0x000001EB8DB21000-memory.dmp

memory/388-33-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-34-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-35-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-36-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-37-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-38-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-39-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-40-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-41-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-42-0x000001EB8DB50000-0x000001EB8DB51000-memory.dmp

memory/388-43-0x000001EB8D770000-0x000001EB8D771000-memory.dmp

memory/388-44-0x000001EB8D760000-0x000001EB8D761000-memory.dmp

memory/388-46-0x000001EB8D770000-0x000001EB8D771000-memory.dmp

memory/388-49-0x000001EB8D760000-0x000001EB8D761000-memory.dmp

memory/388-52-0x000001EB8D6A0000-0x000001EB8D6A1000-memory.dmp

C:\Users\Admin\AppData\Local\Comms\UnistoreDB\store.jfm

MD5 2703e46b7edc502f57060c47012d6587
SHA1 e6d3082a773198153a528ff6192a7765800e5472
SHA256 0fc9ceb7a215f3227a94ee75a8ba839d4dbaf092b700dc5c39dc70ce256dd00a
SHA512 94376d6ed1a376ca00e38726e43b87d8cd124efd499665be3c03dc834e362ea37f565079fb58e7d62c55f912eca16f2b35b92b1c615a30a3bc4178c7c2777573

memory/388-64-0x000001EB8D8A0000-0x000001EB8D8A1000-memory.dmp

memory/388-66-0x000001EB8D8B0000-0x000001EB8D8B1000-memory.dmp

memory/388-67-0x000001EB8D8B0000-0x000001EB8D8B1000-memory.dmp

memory/388-68-0x000001EB8D9C0000-0x000001EB8D9C1000-memory.dmp