Malware Analysis Report

2025-01-22 12:45

Sample ID 240623-btvk1athke
Target 04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118
SHA256 588674efc38299862beb0527dd6ec5b26b39bd1382bdc8e80539417a17344864
Tags
aspackv2
score
8/10

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
8/10

SHA256

588674efc38299862beb0527dd6ec5b26b39bd1382bdc8e80539417a17344864

Threat Level: Likely malicious

The file 04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

aspackv2

Blocklisted process makes network request

ASPack v2.12-2.42

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-23 01:26

Signatures

ASPack v2.12-2.42

aspackv2
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: behavioral2

Detonation Overview

Submitted

2024-06-23 01:26

Reported

2024-06-23 01:29

Platform

win10v2004-20240508-en

Max time kernel

140s

Max time network

127s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

Signatures

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\62fd4bcaa0.dl C:\Windows\SysWOW64\rundll32.exe N/A
File created C:\Windows\SysWOW64\62fd4bcaa0.dl C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

Suspicious behavior: RenamesItself

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4840 wrote to memory of 1500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4840 wrote to memory of 1500 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4840 wrote to memory of 1500 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\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

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=4312,i,4686244434963378549,11462511444150484980,262144 --variations-seed-version --mojo-platform-channel-handle=4168 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp
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 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.16.208.104.in-addr.arpa udp
US 8.8.8.8:53 www.ip888.tk udp
US 8.8.8.8:53 sc.heoru.com udp
US 8.8.8.8:53 sd.heoru.com udp

Files

memory/1500-0-0x0000000000800000-0x0000000000915000-memory.dmp

C:\Windows\SysWOW64\62fd4bcaa0.dl

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/1500-21-0x0000000000800000-0x0000000000915000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-23 01:26

Reported

2024-06-23 01:29

Platform

win7-20240611-en

Max time kernel

142s

Max time network

133s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

Signatures

Blocklisted process makes network request

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\02e2f10736.dl C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification C:\Windows\SysWOW64\02e2f10736.dl C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: RenamesItself

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2196 wrote to memory of 1576 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\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\04bd8b1e08e04f5ff2482376b514b77e_JaffaCakes118.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.szyit.com udp
HK 43.154.92.187:80 www.szyit.com tcp
US 8.8.8.8:53 sc.heoru.com udp
US 8.8.8.8:53 sd.heoru.com udp

Files

memory/1576-0-0x0000000000910000-0x0000000000A25000-memory.dmp

C:\Windows\SysWOW64\02e2f10736.dl

MD5 be5a9552ae615e273439a86e30e75f76
SHA1 baf1b9f676f69b57497bd898070d5239833ce40d
SHA256 1be8c705fca066824751c7ea7d111f98b202c629ecf51b208c55bf93abe1b461
SHA512 bbe693a6994f6506fb256ccf22f0abc78ada7292f5df25156156e185888d0d52816f59bcfe585144c37d1492b1532b86234674000bc0e932837d027f80b7893f

memory/1576-21-0x0000000000910000-0x0000000000A25000-memory.dmp