Malware Analysis Report

2024-12-08 01:39

Sample ID 240428-b34j9sdf7v
Target 5b373acc6de6a1d3b65f599cd6f9b1b5.exe
SHA256 9da06de178863cc711517ea9fbbca36c9bd95040e9a2e696c28de37f39e3b85b
Tags
sectoprat stealc discovery rat spyware stealer trojan
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

9da06de178863cc711517ea9fbbca36c9bd95040e9a2e696c28de37f39e3b85b

Threat Level: Known bad

The file 5b373acc6de6a1d3b65f599cd6f9b1b5.exe was found to be: Known bad.

Malicious Activity Summary

sectoprat stealc discovery rat spyware stealer trojan

SectopRAT payload

Stealc

SectopRAT

Downloads MZ/PE file

Loads dropped DLL

Reads user/profile data of web browsers

Executes dropped EXE

Reads data files stored by FTP clients

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-28 01:41

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-28 01:41

Reported

2024-04-28 01:43

Platform

win7-20240215-en

Max time kernel

133s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe"

Signatures

SectopRAT

trojan rat sectoprat

SectopRAT payload

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

Stealc

stealer stealc

Downloads MZ/PE file

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u18g.0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2324 set thread context of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 1284 set thread context of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\u18g.0.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\u18g.0.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1600 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.0.exe
PID 1600 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.0.exe
PID 1600 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.0.exe
PID 1600 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.0.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 1600 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe
PID 2324 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 1284 N/A C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1284 wrote to memory of 1480 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe

"C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe"

C:\Users\Admin\AppData\Local\Temp\u18g.0.exe

"C:\Users\Admin\AppData\Local\Temp\u18g.0.exe"

C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe

"C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\SysWOW64\cmd.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Network

Country Destination Domain Proto
DE 185.172.128.228:80 185.172.128.228 tcp
DE 185.172.128.203:80 185.172.128.203 tcp
US 8.8.8.8:53 note.padd.cn.com udp
DE 185.172.128.76:80 185.172.128.76 tcp
RO 176.97.76.106:80 note.padd.cn.com tcp
RU 91.215.85.66:15647 tcp
RU 91.215.85.66:9000 tcp

Files

memory/1600-1-0x0000000001AE0000-0x0000000001BE0000-memory.dmp

memory/1600-2-0x0000000000320000-0x000000000038D000-memory.dmp

memory/1600-3-0x0000000000400000-0x0000000001A3C000-memory.dmp

\Users\Admin\AppData\Local\Temp\u18g.0.exe

MD5 2ff02a230388a96b3762a5d12eef74b5
SHA1 9a53bacfeaa9c4d9cc2521424c9512fb1ef66bc2
SHA256 74b45e62fedd53688e8db6ebf12c6a21ad5c2968fa6b4edcfbdc2e9b185f7443
SHA512 30227a39ac06547cfdd34bb06c7099292c842e68b2220b9b1be7ddf3992456f3bf027cd77660e8071f310a88afc441193c2967eb873846d92681f04e0e9fa119

memory/2988-20-0x0000000061E00000-0x0000000061EF3000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\U18G1~1.ZIP

MD5 78d3ca6355c93c72b494bb6a498bf639
SHA1 2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e
SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
SHA512 1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

C:\Users\Admin\AppData\Local\Temp\u18g.2\run.exe

MD5 9fb4770ced09aae3b437c1c6eb6d7334
SHA1 fe54b31b0db8665aa5b22bed147e8295afc88a03
SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
SHA512 140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

memory/1600-127-0x0000000000400000-0x0000000001A3C000-memory.dmp

memory/1600-130-0x0000000001AE0000-0x0000000001BE0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u18g.2\relay.dll

MD5 10d51becd0bbce0fab147ff9658c565e
SHA1 4689a18112ff876d3c066bc8c14a08fd6b7b7a4a
SHA256 7b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
SHA512 29faf493bb28f7842c905adc5312f31741effb09f841059b53d73b22aea2c4d41d73db10bbf37703d6aeb936ffacbc756a3cc85ba3c0b6a6863ef4d27fefcd29

C:\Users\Admin\AppData\Local\Temp\u18g.2\bunch.dat

MD5 1e8237d3028ab52821d69099e0954f97
SHA1 30a6ae353adda0c471c6ed5b7a2458b07185abf2
SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
SHA512 a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

C:\Users\Admin\AppData\Local\Temp\u18g.2\whale.dbf

MD5 a723bf46048e0bfb15b8d77d7a648c3e
SHA1 8952d3c34e9341e4425571e10f22b782695bb915
SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
SHA512 ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

memory/2324-137-0x0000000074250000-0x00000000743C4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u18g.2\UIxMarketPlugin.dll

MD5 d1ba9412e78bfc98074c5d724a1a87d6
SHA1 0572f98d78fb0b366b5a086c2a74cc68b771d368
SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
SHA512 8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

memory/2324-138-0x00000000775A0000-0x0000000077749000-memory.dmp

\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

memory/2988-176-0x0000000000400000-0x0000000001A18000-memory.dmp

memory/2324-177-0x0000000074250000-0x00000000743C4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ac9d9072

MD5 a859e70e2a8f27be0aadc8319127fa3c
SHA1 ffc557a96bcbef7af8ba1f20c958fe487e240632
SHA256 dc7f59e5067f08f264f4d7142b85d5daf45dcbeade1402d2fb7f6bc19225af27
SHA512 24aaeeb6503692656b2631143a571c8b21da4bc0322f376eaccb05ec463ade1a72141b16bbbe3079ca25955f43e90a369c34e654ec5d32a08bee12314c06166f

memory/1284-180-0x00000000775A0000-0x0000000077749000-memory.dmp

memory/1284-226-0x0000000074250000-0x00000000743C4000-memory.dmp

memory/1480-230-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/1480-229-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/1480-228-0x0000000072BD0000-0x0000000073C32000-memory.dmp

memory/1480-231-0x0000000000400000-0x00000000004C6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp982B.tmp

MD5 c9ff7748d8fcef4cf84a5501e996a641
SHA1 02867e5010f62f97ebb0cfb32cb3ede9449fe0c9
SHA256 4d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
SHA512 d36054499869a8f56ac8547ccd5455f1252c24e17d2b185955390b32da7e2a732ace4e0f30f9493fcc61425a2e31ed623465f998f41af69423ee0e3ed1483a73

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-28 01:41

Reported

2024-04-28 01:43

Platform

win10v2004-20240419-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe

"C:\Users\Admin\AppData\Local\Temp\5b373acc6de6a1d3b65f599cd6f9b1b5.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2288 -ip 2288

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 720

Network

Country Destination Domain Proto
DE 185.172.128.228:80 tcp
DE 185.172.128.203:80 tcp

Files

memory/2288-1-0x0000000001B70000-0x0000000001C70000-memory.dmp

memory/2288-2-0x0000000003550000-0x00000000035BD000-memory.dmp

memory/2288-3-0x0000000000400000-0x0000000001A3C000-memory.dmp

memory/2288-5-0x0000000001B70000-0x0000000001C70000-memory.dmp

memory/2288-6-0x0000000000400000-0x0000000001A3C000-memory.dmp

memory/2288-9-0x0000000000400000-0x0000000001A3C000-memory.dmp