Analysis Overview
SHA256
b7d757263aac8d89154f7962550b795cca99e2df080d8bfdfbc3582b1a0d8d43
Threat Level: Known bad
The file UndertaleTrainer.exe was found to be: Known bad.
Malicious Activity Summary
Mars Stealer
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Enumerates physical storage devices
Program crash
Unsigned PE
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-24 18:06
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-24 18:06
Reported
2023-12-24 18:08
Platform
win7-20231129-en
Max time kernel
121s
Max time network
145s
Command Line
Signatures
Mars Stealer
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Reads user/profile data of web browsers
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\MuiCache | C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe
"C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe"
C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe
"C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 564
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.msk-post.com | udp |
| RU | 91.228.225.55:80 | www.msk-post.com | tcp |
| RU | 91.228.225.55:443 | www.msk-post.com | tcp |
| US | 8.8.8.8:53 | apps.identrust.com | udp |
| GB | 96.17.179.184:80 | apps.identrust.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
Files
memory/2948-0-0x0000000000ED0000-0x0000000000F42000-memory.dmp
memory/2948-1-0x0000000073F30000-0x000000007461E000-memory.dmp
memory/2784-12-0x0000000000400000-0x000000000043D000-memory.dmp
memory/2948-13-0x0000000073F30000-0x000000007461E000-memory.dmp
memory/2948-11-0x0000000000E60000-0x0000000000E9D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe
| MD5 | b13a4bddff058d6c9c44d62ecf492563 |
| SHA1 | dcf173cf7a9ae1c9b28c92a13bca0b619dee3511 |
| SHA256 | ff90f644a5d0af130cf8d61d0908447a8953d3be58c0ecd8b23f03534df30e4c |
| SHA512 | 7c8611fd762dbd1b77788dc0950323adf751a1a881b855c8b8cf132f4b3515479c56789b1360a028d5704426f37fb4610effb79824c0bc0ea85f2a3d7c638a90 |
C:\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe
| MD5 | 8cc76969b76e6cd21e2962bf4ec38834 |
| SHA1 | 00f9793e7b740c91b043a5bee65a2e62cf7611bf |
| SHA256 | b8acaa0830c9799d74fd1a78ce4e4051f2f85ffb1298f9d20eda63d21794173c |
| SHA512 | b9c0f88766977249a3f0fc56c22953a314210d4c7e7ef209bd0c97c0b2e1badcb8c3d6e4b5cad6d7626d4b7c65380456b2a3d549dff7766f8e11f09bf0d1d87f |
\Users\Admin\AppData\Local\Temp\Low\PVZQIE.exe
| MD5 | 26a438749e676718c9213208686053f1 |
| SHA1 | e7916ca29fb1fdf459f8ec3a5b017c57cf168218 |
| SHA256 | 62297c5b3b1a5cbea2177daa053eb3594fd37357f3aa80b177b472cf9c49b8ff |
| SHA512 | 98a4d1a1c67a59b9886c57bf4d69066fc388ecf6d18b2e3617767f625b4cf38f46eebd632b87b944a3bb53c8902d8a19d43266450a6d45f8b84d29a060028dd8 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
C:\Users\Admin\AppData\LocalLow\Temp\TarC395.tmp
| MD5 | 9c0c641c06238516f27941aa1166d427 |
| SHA1 | 64cd549fb8cf014fcd9312aa7a5b023847b6c977 |
| SHA256 | 4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f |
| SHA512 | 936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
| MD5 | 02f496531fe2a8531f1f3bbcc4ca83dd |
| SHA1 | d0f3f553e26fe892d9f2959f261cbc666726edf6 |
| SHA256 | ef0060913b0b9889c4f29c8492a9fbad10b56dde021dff49407a2e1d38bb246a |
| SHA512 | 9c7c292b4a05cfec89e34597f3f216aee0eb6539fec4edd561919e1148e37e9228291244005e43077daa36d1392bba60664294dc381965a8518c22e446ac3767 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
| MD5 | a266bb7dcc38a562631361bbf61dd11b |
| SHA1 | 3b1efd3a66ea28b16697394703a72ca340a05bd5 |
| SHA256 | df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e |
| SHA512 | 0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc |
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-24 18:06
Reported
2023-12-24 18:08
Platform
win10v2004-20231215-en
Max time kernel
147s
Max time network
156s
Command Line
Signatures
Mars Stealer
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Adobe\.exe | N/A |
Reads user/profile data of web browsers
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Roaming\Adobe\.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4656 wrote to memory of 4552 | N/A | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | C:\Users\Admin\AppData\Roaming\Adobe\.exe |
| PID 4656 wrote to memory of 4552 | N/A | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | C:\Users\Admin\AppData\Roaming\Adobe\.exe |
| PID 4656 wrote to memory of 4552 | N/A | C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe | C:\Users\Admin\AppData\Roaming\Adobe\.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe
"C:\Users\Admin\AppData\Local\Temp\UndertaleTrainer.exe"
C:\Users\Admin\AppData\Roaming\Adobe\.exe
"C:\Users\Admin\AppData\Roaming\Adobe\.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4552 -ip 4552
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 1840
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.msk-post.com | udp |
| RU | 91.228.225.55:80 | www.msk-post.com | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 114.110.16.96.in-addr.arpa | udp |
| RU | 91.228.225.55:443 | www.msk-post.com | tcp |
| US | 8.8.8.8:53 | 32.169.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.225.228.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 193.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.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 | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.223.142.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.65.42.20.in-addr.arpa | udp |
Files
memory/4656-0-0x0000000075030000-0x00000000757E0000-memory.dmp
memory/4656-1-0x0000000000350000-0x00000000003C2000-memory.dmp
C:\Users\Admin\AppData\Roaming\Adobe\.exe
| MD5 | b13a4bddff058d6c9c44d62ecf492563 |
| SHA1 | dcf173cf7a9ae1c9b28c92a13bca0b619dee3511 |
| SHA256 | ff90f644a5d0af130cf8d61d0908447a8953d3be58c0ecd8b23f03534df30e4c |
| SHA512 | 7c8611fd762dbd1b77788dc0950323adf751a1a881b855c8b8cf132f4b3515479c56789b1360a028d5704426f37fb4610effb79824c0bc0ea85f2a3d7c638a90 |
C:\Users\Admin\AppData\Roaming\Adobe\.exe
| MD5 | 76985eb01cfab94fedc8b5a88121a8a4 |
| SHA1 | dcc87d2a892fec0f9bc17a31ec58ca869a6904c7 |
| SHA256 | e1b206c20241adb99a689d28ab5c023e1aab192a05e8cea90f3a2de4727d3442 |
| SHA512 | 7b7fc3237faada45f218a68b7cb536e7e478a8189361e091ea47a2c181d0c8e3e3968687403468f668d01c8502e2f47f86639fb2da2a4dba007151bff1868b55 |
C:\Users\Admin\AppData\Roaming\Adobe\.exe
| MD5 | e04486dc8097446e3ae8ef86f6ad9d11 |
| SHA1 | 1f10e982bc422a164380669c0e27c42570c8bede |
| SHA256 | d439fd6d159b03c18a483ff80c3f9010867b6ae55e05299d99c09567c8e55670 |
| SHA512 | dfb252abfddefd3a265e08c901ed98871c4ac183563e8f3458ab18d5f894b0d6affed077b0fb161261871b0271a341fdcdac0e40b0c48f210c676befae5edd6e |
memory/4552-10-0x0000000000400000-0x000000000043D000-memory.dmp
memory/4656-12-0x0000000075030000-0x00000000757E0000-memory.dmp
memory/4552-20-0x0000000000400000-0x000000000043D000-memory.dmp