Malware Analysis Report

2024-11-30 19:34

Sample ID 240917-y2yzqasfrh
Target Ambrosial.exe
SHA256 6ff53b8187d0d3e287ad9ce3da20eca4f9dd105a2e3421ca1ad73b533ec4b91a
Tags
agilenet
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

6ff53b8187d0d3e287ad9ce3da20eca4f9dd105a2e3421ca1ad73b533ec4b91a

Threat Level: Shows suspicious behavior

The file Ambrosial.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

agilenet

Loads dropped DLL

Obfuscated with Agile.Net obfuscator

Legitimate hosting services abused for malware hosting/C2

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-17 20:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-17 20:17

Reported

2024-09-17 20:20

Platform

win7-20240903-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe"

Signatures

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Fonts\Azonix.otf C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A
File opened for modification C:\Windows\Fonts\Azonix.otf C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3004 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe C:\Windows\system32\WerFault.exe
PID 3004 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe C:\Windows\system32\WerFault.exe
PID 3004 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe

"C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 3004 -s 596

Network

N/A

Files

memory/3004-0-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

memory/3004-1-0x0000000001050000-0x000000000203A000-memory.dmp

memory/3004-3-0x0000000000C30000-0x0000000000C4A000-memory.dmp

memory/3004-4-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

memory/3004-2-0x0000000000C10000-0x0000000000C2C000-memory.dmp

C:\Windows\Fonts\Azonix.otf

MD5 cdfe47b31e9184a55cf02eef1baf7240
SHA1 b8825c605434d572f5277be0283d5a9b2cde59e4
SHA256 51a65e5c09bf27980adf640cb54cb2a5bbb217fdaab79b377e158f92533362a9
SHA512 a2e5141c0f7ca72bcf5b1a303fce1734953d83ad363d4c3c7d8786e1bfd872a6b96eeabce3740b547a5447e255415cdf688a0d2074cecfaa0c54c49d0f2882c5

memory/3004-11-0x000007FEF5623000-0x000007FEF5624000-memory.dmp

memory/3004-12-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-17 20:17

Reported

2024-09-17 20:17

Platform

win10v2004-20240802-en

Max time kernel

14s

Max time network

15s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe"

Signatures

Loads dropped DLL

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

Obfuscated with Agile.Net obfuscator

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

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Fonts\Azonix.otf C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A
File opened for modification C:\Windows\Fonts\Azonix.otf C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A
File created C:\Windows\Fonts\OpenSansLight.ttf C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe

"C:\Users\Admin\AppData\Local\Temp\Ambrosial.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 raw.githubusercontent.com udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 185.199.110.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 cdn.discordapp.com udp
US 162.159.130.233:443 cdn.discordapp.com tcp
US 8.8.8.8:53 picsum.photos udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.110.199.185.in-addr.arpa udp
US 8.8.8.8:53 233.130.159.162.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 104.26.4.30:443 picsum.photos tcp
US 8.8.8.8:53 fastly.picsum.photos udp
US 151.101.65.91:443 fastly.picsum.photos tcp
US 8.8.8.8:53 91.65.101.151.in-addr.arpa udp
US 8.8.8.8:53 30.4.26.104.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp

Files

memory/4700-0-0x00007FFBCA443000-0x00007FFBCA445000-memory.dmp

memory/4700-1-0x000002C61F510000-0x000002C6204FA000-memory.dmp

memory/4700-2-0x000002C620910000-0x000002C62092C000-memory.dmp

memory/4700-3-0x000002C620950000-0x000002C62096A000-memory.dmp

memory/4700-5-0x00007FFBCA440000-0x00007FFBCAF01000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Azonix.otf

MD5 cdfe47b31e9184a55cf02eef1baf7240
SHA1 b8825c605434d572f5277be0283d5a9b2cde59e4
SHA256 51a65e5c09bf27980adf640cb54cb2a5bbb217fdaab79b377e158f92533362a9
SHA512 a2e5141c0f7ca72bcf5b1a303fce1734953d83ad363d4c3c7d8786e1bfd872a6b96eeabce3740b547a5447e255415cdf688a0d2074cecfaa0c54c49d0f2882c5

C:\Windows\Fonts\OpenSansLight.ttf

MD5 1bf71be111189e76987a4bb9b3115cb7
SHA1 40442c189568184b6e6c27a25d69f14d91b65039
SHA256 cf5f5184c1441a1660aa52526328e9d5c2793e77b6d8d3a3ad654bdb07ab8424
SHA512 cb18b69e98a194af5e3e3d982a75254f3a20bd94c68816a15f38870b9be616cef0c32033f253219cca9146b2b419dd6df28cc4ceeff80d01f400aa0ed101e061

memory/4700-26-0x000002C63B0D0000-0x000002C63B180000-memory.dmp

memory/4700-34-0x000002C63AAD0000-0x000002C63AAF2000-memory.dmp

C:\Users\Admin\AppData\Local\Ambrosial\log.txt

MD5 55ddfe7c740b3cb5e093e5a006a30f82
SHA1 e94dbead8f7717b5400a30b1efdd755b6a824a22
SHA256 0491be9b3100d69e4e317225ad3278c1aa2fe6410a5c206d621817938b684f8f
SHA512 dcce0b4976f5aba575ecdf630b95e2b31a96d083a923d86118ae4042c18a2e909c126887a3c8eebf5e5036ce8ec347ad96e18bc7e75ec71d42c9ca53d10172c1

C:\Users\Admin\AppData\Local\Ambrosial\log.txt

MD5 39e612c2b5c7aace7f6e1d1c1b09932c
SHA1 9dfb34919c3e7051cf1d1eb259f837341d294dec
SHA256 4bc96cfd8a0f1dd69a144da8cb5348c7632e7588fb4d333b013b888e3fbe4b79
SHA512 bb5f02cc87b568046c4ca6fc77fb4d7b48fb4c9e1ebe8f151df5908ec73484ab560eeba825fa9f7c94ef3fb00f4e79d416f91c720f293209f6655bc04b0c0019

memory/4700-167-0x00007FFBCA443000-0x00007FFBCA445000-memory.dmp

memory/4700-185-0x00007FFBCA440000-0x00007FFBCAF01000-memory.dmp

memory/4700-262-0x000002C63B610000-0x000002C63B7F8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\0e1a63fc-9228-4b4f-96fc-fee060f96e92\GunaDotNetRT64.dll

MD5 9c43f77cb7cff27cb47ed67babe3eda5
SHA1 b0400cf68249369d21de86bd26bb84ccffd47c43
SHA256 f25b9288fe370dcfcb4823fb4e44ab88c7f5fce6e137d0dba389a3dba07d621e
SHA512 cde6fb6cf8db6f9746e69e6c10214e60b3646700d70b49668a2a792e309714dd2d4c5a5241977a833a95fcde8318abcc89eb9968a5039a0b75726bbfa27125a7

memory/4700-269-0x00007FFBC54F0000-0x00007FFBC5517000-memory.dmp

memory/4700-284-0x000002C63B610000-0x000002C63B7F4000-memory.dmp

memory/4700-310-0x000002C63B610000-0x000002C63B7F4000-memory.dmp

memory/4700-330-0x000002C63B610000-0x000002C63B7F4000-memory.dmp