Malware Analysis Report

2025-01-22 12:41

Sample ID 240622-1d4w6svdqa
Target 03ebfe2e3c74049304665b3e0269c333_JaffaCakes118
SHA256 d6c4f2e523adc05df8abf23015a70cdc3c476ad74cb9c91c4b354fe03f369362
Tags
aspackv2 persistence
score
7/10

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
7/10

SHA256

d6c4f2e523adc05df8abf23015a70cdc3c476ad74cb9c91c4b354fe03f369362

Threat Level: Shows suspicious behavior

The file 03ebfe2e3c74049304665b3e0269c333_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 persistence

Loads dropped DLL

ASPack v2.12-2.42

Adds Run key to start application

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 21:32

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: behavioral1

Detonation Overview

Submitted

2024-06-22 21:32

Reported

2024-06-22 21:35

Platform

win7-20240611-en

Max time kernel

142s

Max time network

124s

Command Line

C:\Windows\Explorer.EXE

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\cdoosoft = "C:\\Users\\Admin\\AppData\\Local\\Temp\\herss.exe" C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 164

Network

N/A

Files

memory/2104-0-0x0000000000400000-0x0000000000481000-memory.dmp

memory/2104-4-0x0000000000401000-0x0000000000403000-memory.dmp

memory/1196-6-0x00000000026F0000-0x00000000026F1000-memory.dmp

\Users\Admin\AppData\Local\Temp\cvasds0.dll

MD5 cb8eb9892b628a9afe8fc96cf4184cd2
SHA1 65aa39245836b89783c8ab742411bbb28094152c
SHA256 903b6bf37c4a08ac92e36d657cb3f1c508dfc04729254570f5c4e9e3ff052df8
SHA512 6dfdf7ba825f111a9ae8a442ba1d1bbacc73391d367405645914b4d44371256b1a4b84cae4b99abb4ad3352545703ff18fc3236ef9a3af394ab25e51d2341adc

memory/2104-9-0x0000000010000000-0x0000000010078000-memory.dmp

memory/2104-10-0x0000000000400000-0x0000000000481000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 21:32

Reported

2024-06-22 21:35

Platform

win10v2004-20240226-en

Max time kernel

140s

Max time network

161s

Command Line

C:\Windows\Explorer.EXE

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cdoosoft = "C:\\Users\\Admin\\AppData\\Local\\Temp\\herss.exe" C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3484 wrote to memory of 3332 N/A C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\03ebfe2e3c74049304665b3e0269c333_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3484 -ip 3484

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3484 -s 468

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 --mojo-platform-channel-handle=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 216.58.204.74:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 pki.goog udp
US 8.8.8.8:53 pki.goog udp
US 216.239.32.29:80 pki.goog tcp
US 8.8.8.8:53 i.pki.goog udp
US 8.8.8.8:53 i.pki.goog udp
GB 172.217.169.67:80 i.pki.goog tcp
US 8.8.8.8:53 74.204.58.216.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 29.32.239.216.in-addr.arpa udp
US 8.8.8.8:53 67.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

memory/3484-0-0x0000000000400000-0x0000000000481000-memory.dmp

memory/3484-1-0x0000000000401000-0x0000000000403000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\cvasds0.dll

MD5 cb8eb9892b628a9afe8fc96cf4184cd2
SHA1 65aa39245836b89783c8ab742411bbb28094152c
SHA256 903b6bf37c4a08ac92e36d657cb3f1c508dfc04729254570f5c4e9e3ff052df8
SHA512 6dfdf7ba825f111a9ae8a442ba1d1bbacc73391d367405645914b4d44371256b1a4b84cae4b99abb4ad3352545703ff18fc3236ef9a3af394ab25e51d2341adc

memory/3484-9-0x0000000010000000-0x0000000010078000-memory.dmp

memory/3484-10-0x0000000000400000-0x0000000000481000-memory.dmp

memory/3484-12-0x0000000010000000-0x0000000010078000-memory.dmp