Malware Analysis Report

2024-12-07 20:39

Sample ID 241122-cxawfaylel
Target 538aefe2d62a53a7b5991a4acda23b8f04aeba4fee1959018ddc375ed6858e5b.zip
SHA256 538aefe2d62a53a7b5991a4acda23b8f04aeba4fee1959018ddc375ed6858e5b
Tags
strrat persistence
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

538aefe2d62a53a7b5991a4acda23b8f04aeba4fee1959018ddc375ed6858e5b

Threat Level: Known bad

The file 538aefe2d62a53a7b5991a4acda23b8f04aeba4fee1959018ddc375ed6858e5b.zip was found to be: Known bad.

Malicious Activity Summary

strrat persistence

Strrat family

Drops startup file

Adds Run key to start application

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-22 02:26

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-22 02:26

Reported

2024-11-22 02:29

Platform

win7-20241023-en

Max time kernel

149s

Max time network

151s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\MIS_FILE_9888123_RECEIVED_xsls.jar

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MIS_FILE_9888123_RECEIVED_xsls.jar C:\Windows\system32\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MIS_FILE_9888123_RECEIVED_xsls = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\MIS_FILE_9888123_RECEIVED_xsls.jar\"" C:\Windows\system32\java.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MIS_FILE_9888123_RECEIVED_xsls = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\MIS_FILE_9888123_RECEIVED_xsls.jar\"" C:\Windows\system32\java.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3032 wrote to memory of 3056 N/A C:\Windows\system32\java.exe C:\Program Files\Java\jre7\bin\java.exe
PID 3032 wrote to memory of 3056 N/A C:\Windows\system32\java.exe C:\Program Files\Java\jre7\bin\java.exe
PID 3032 wrote to memory of 3056 N/A C:\Windows\system32\java.exe C:\Program Files\Java\jre7\bin\java.exe

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\MIS_FILE_9888123_RECEIVED_xsls.jar

C:\Program Files\Java\jre7\bin\java.exe

"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\MIS_FILE_9888123_RECEIVED_xsls.jar"

Network

Country Destination Domain Proto
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp

Files

memory/3032-2-0x0000000002610000-0x0000000002880000-memory.dmp

memory/3032-10-0x0000000000150000-0x0000000000151000-memory.dmp

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\MIS_FILE_9888123_RECEIVED_xsls.jar

MD5 1a7a05db5686a51ce39c3b35c111d73f
SHA1 c6ba4712046569c3d6601e5d2f85aeecfabef69b
SHA256 bbd5de9d533b350b86e4d9aa54b6545c6e890c4f263ad27433b2c995faf89493
SHA512 f15d3e2f5cd3a10111c87c2f6c1d8d7bf51fab14f9e6c33ffde067a5c7df2d7f81055d0ba331a840a33ba596cb45e782299f626367a928447a08480d41a3a1c9

memory/3032-20-0x0000000002610000-0x0000000002880000-memory.dmp

memory/3056-21-0x00000000024E0000-0x0000000002750000-memory.dmp

memory/3056-29-0x0000000000150000-0x0000000000151000-memory.dmp

memory/3056-30-0x0000000000150000-0x0000000000151000-memory.dmp

memory/3056-31-0x00000000024E0000-0x0000000002750000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-22 02:26

Reported

2024-11-22 02:29

Platform

win10v2004-20241007-en

Max time kernel

145s

Max time network

147s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\MIS_FILE_9888123_RECEIVED_xsls.jar

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MIS_FILE_9888123_RECEIVED_xsls.jar C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MIS_FILE_9888123_RECEIVED_xsls = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\MIS_FILE_9888123_RECEIVED_xsls.jar\"" C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MIS_FILE_9888123_RECEIVED_xsls = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\MIS_FILE_9888123_RECEIVED_xsls.jar\"" C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A

Processes

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\MIS_FILE_9888123_RECEIVED_xsls.jar

C:\Program Files\Java\jre-1.8\bin\java.exe

"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\MIS_FILE_9888123_RECEIVED_xsls.jar"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
US 8.8.8.8:53 macostopacros.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp
US 8.8.8.8:53 prtoacasedted.3utilities.com udp
BG 87.120.115.30:3095 macostopacros.3utilities.com tcp

Files

memory/1044-2-0x000002688E250000-0x000002688E4C0000-memory.dmp

memory/1044-12-0x000002688E4C0000-0x000002688E4D0000-memory.dmp

memory/1044-14-0x000002688E4D0000-0x000002688E4E0000-memory.dmp

memory/1044-18-0x000002688E4F0000-0x000002688E500000-memory.dmp

memory/1044-17-0x000002688E4E0000-0x000002688E4F0000-memory.dmp

memory/1044-20-0x000002688E500000-0x000002688E510000-memory.dmp

memory/1044-23-0x000002688E510000-0x000002688E520000-memory.dmp

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\MIS_FILE_9888123_RECEIVED_xsls.jar

MD5 1a7a05db5686a51ce39c3b35c111d73f
SHA1 c6ba4712046569c3d6601e5d2f85aeecfabef69b
SHA256 bbd5de9d533b350b86e4d9aa54b6545c6e890c4f263ad27433b2c995faf89493
SHA512 f15d3e2f5cd3a10111c87c2f6c1d8d7bf51fab14f9e6c33ffde067a5c7df2d7f81055d0ba331a840a33ba596cb45e782299f626367a928447a08480d41a3a1c9

memory/1044-38-0x000002688E510000-0x000002688E520000-memory.dmp

memory/1044-37-0x000002688E500000-0x000002688E510000-memory.dmp

memory/1044-36-0x000002688E4E0000-0x000002688E4F0000-memory.dmp

memory/1044-35-0x000002688E4F0000-0x000002688E500000-memory.dmp

memory/1044-34-0x000002688E4D0000-0x000002688E4E0000-memory.dmp

memory/1044-33-0x000002688E4C0000-0x000002688E4D0000-memory.dmp

memory/1044-32-0x000002688E250000-0x000002688E4C0000-memory.dmp

memory/1044-30-0x000002688E230000-0x000002688E231000-memory.dmp

memory/4520-42-0x0000023C9D030000-0x0000023C9D2A0000-memory.dmp

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

MD5 3c537136c04c90da358a26bdd94f9796
SHA1 d7dab3e01679faaedd396d3357723cea14a543b3
SHA256 04675c5514654160ef52cbf8ed1670a4d0c0b9dd227794b54188f49ee2da2559
SHA512 33c9523a44bed21801af46874b9a07146f9f05951c7485fee48b496654914f67cc3a07e5eff779a2daeb98d41a1f847b1dee2d7b89e0d68966101d7c9436206b

memory/4520-53-0x0000023C9D2A0000-0x0000023C9D2B0000-memory.dmp

memory/4520-55-0x0000023C9D2B0000-0x0000023C9D2C0000-memory.dmp

memory/4520-57-0x0000023C9D2C0000-0x0000023C9D2D0000-memory.dmp

memory/4520-61-0x0000023C9D2E0000-0x0000023C9D2F0000-memory.dmp

memory/4520-60-0x0000023C9D2D0000-0x0000023C9D2E0000-memory.dmp

memory/4520-66-0x0000023C9D300000-0x0000023C9D310000-memory.dmp

memory/4520-68-0x0000023C9D310000-0x0000023C9D320000-memory.dmp

memory/4520-64-0x0000023C9D2F0000-0x0000023C9D300000-memory.dmp

memory/4520-69-0x0000023C9B780000-0x0000023C9B781000-memory.dmp

memory/4520-70-0x0000023C9D030000-0x0000023C9D2A0000-memory.dmp

memory/4520-71-0x0000023C9D2A0000-0x0000023C9D2B0000-memory.dmp

memory/4520-73-0x0000023C9D2B0000-0x0000023C9D2C0000-memory.dmp

memory/4520-74-0x0000023C9D2C0000-0x0000023C9D2D0000-memory.dmp

memory/4520-75-0x0000023C9D2D0000-0x0000023C9D2E0000-memory.dmp

memory/4520-76-0x0000023C9D2E0000-0x0000023C9D2F0000-memory.dmp

memory/4520-77-0x0000023C9D2F0000-0x0000023C9D300000-memory.dmp

memory/4520-78-0x0000023C9D300000-0x0000023C9D310000-memory.dmp

memory/4520-79-0x0000023C9D310000-0x0000023C9D320000-memory.dmp

memory/4520-81-0x0000023C9D320000-0x0000023C9D330000-memory.dmp