Malware Analysis Report

2024-12-08 01:47

Sample ID 240427-fylwwacf7t
Target 311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713
SHA256 311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713
Tags
sectoprat stealc discovery rat 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

311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713

Threat Level: Known bad

The file 311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713 was found to be: Known bad.

Malicious Activity Summary

sectoprat stealc discovery rat stealer trojan

SectopRAT

SectopRAT payload

Stealc

Downloads MZ/PE file

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-27 05:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-27 05:16

Reported

2024-04-27 05:19

Platform

win10v2004-20240419-en

Max time kernel

66s

Max time network

50s

Command Line

"C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe

"C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2580 -ip 2580

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2580 -s 456

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
DE 185.172.128.228:80 tcp
DE 185.172.128.203:80 tcp
US 8.8.8.8:53 g.bing.com udp

Files

memory/2580-1-0x0000000002D30000-0x0000000002E30000-memory.dmp

memory/2580-2-0x0000000002CA0000-0x0000000002D0D000-memory.dmp

memory/2580-3-0x0000000000400000-0x0000000002B21000-memory.dmp

memory/2580-6-0x0000000002D30000-0x0000000002E30000-memory.dmp

memory/2580-7-0x0000000002CA0000-0x0000000002D0D000-memory.dmp

memory/2580-8-0x0000000000400000-0x0000000002B21000-memory.dmp

memory/2580-11-0x0000000000400000-0x0000000002B21000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-27 05:16

Reported

2024-04-27 05:19

Platform

win11-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.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\u2j8.0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe N/A

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2448 set thread context of 808 N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 808 set thread context of 3372 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\u2j8.0.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\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\u2j8.2\run.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3284 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe
PID 3284 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe
PID 3284 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe
PID 3284 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe
PID 3284 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe
PID 3284 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe
PID 2448 wrote to memory of 808 N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2448 wrote to memory of 808 N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2448 wrote to memory of 808 N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 2448 wrote to memory of 808 N/A C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 808 wrote to memory of 3372 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 808 wrote to memory of 3372 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 808 wrote to memory of 3372 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 808 wrote to memory of 3372 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 808 wrote to memory of 3372 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe

"C:\Users\Admin\AppData\Local\Temp\311718335437b77a728b4b4bb7b1c46129fdbcb78012a4a6698b59b2d23d9713.exe"

C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe

"C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe"

C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe

"C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3284 -ip 3284

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3284 -s 1588

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
US 8.8.8.8:53 228.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 203.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
RO 176.97.76.106:80 note.padd.cn.com tcp
DE 185.172.128.111:80 185.172.128.111 tcp
DE 185.172.128.111:80 185.172.128.111 tcp
RU 91.215.85.66:15647 tcp
DE 185.172.128.111:80 185.172.128.111 tcp
DE 185.172.128.111:80 185.172.128.111 tcp
DE 185.172.128.111:80 185.172.128.111 tcp

Files

memory/3284-2-0x00000000030A0000-0x000000000310D000-memory.dmp

memory/3284-1-0x0000000002C90000-0x0000000002D90000-memory.dmp

memory/3284-3-0x0000000000400000-0x0000000002B21000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2j8.0.exe

MD5 676f3f7e1757f74747899195490046a1
SHA1 8a9c5dea2f75e584d55ebde9e00c754a957eabf0
SHA256 bf6e481d423c25eaee5b59bd417d6cdac7ec25b3a0940e39e6b2db84c20b8f50
SHA512 26100199b07b618fd0ff29a0f4d7c2945736618bab4bb3cab3572673bb62ed22f936756da55235bbb51a20a1cf132fb6f3f86cba02f4ee1354a373bccad1c00a

memory/4404-17-0x0000000003060000-0x0000000003087000-memory.dmp

memory/4404-16-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/4404-18-0x0000000000400000-0x0000000002AFC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2j8.1.zip

MD5 78d3ca6355c93c72b494bb6a498bf639
SHA1 2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e
SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
SHA512 1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

C:\Users\Admin\AppData\Local\Temp\u2j8.2\run.exe

MD5 9fb4770ced09aae3b437c1c6eb6d7334
SHA1 fe54b31b0db8665aa5b22bed147e8295afc88a03
SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
SHA512 140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

C:\Users\Admin\AppData\Local\Temp\u2j8.2\relay.dll

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

C:\Users\Admin\AppData\Local\Temp\u2j8.2\whale.dbf

MD5 a723bf46048e0bfb15b8d77d7a648c3e
SHA1 8952d3c34e9341e4425571e10f22b782695bb915
SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
SHA512 ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

C:\Users\Admin\AppData\Local\Temp\u2j8.2\bunch.dat

MD5 1e8237d3028ab52821d69099e0954f97
SHA1 30a6ae353adda0c471c6ed5b7a2458b07185abf2
SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
SHA512 a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

memory/2448-104-0x0000000072380000-0x00000000724FD000-memory.dmp

memory/2448-105-0x00007FFE84020000-0x00007FFE84229000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2j8.2\UIxMarketPlugin.dll

MD5 d1ba9412e78bfc98074c5d724a1a87d6
SHA1 0572f98d78fb0b366b5a086c2a74cc68b771d368
SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
SHA512 8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

memory/3284-112-0x00000000030A0000-0x000000000310D000-memory.dmp

memory/3284-111-0x0000000000400000-0x0000000002B21000-memory.dmp

memory/2448-113-0x0000000072380000-0x00000000724FD000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\8ac5855c

MD5 9a6d2ca0f925dcb4b7de78b239797c1f
SHA1 110dfacd6aa5110cf4d3f068014854f47097a583
SHA256 d7082f8369a3ac77043d65b97ac213f060494c4bf19a396d2edea4a754b11e73
SHA512 cc700725a91986a5770a88a77adad5e4d277977d58b2eb1b5e369751bc408bd8e15c09bfd4191de83d2028a69a3db242897e1e00c86cf1375110158d30015339

memory/4404-116-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/808-117-0x00007FFE84020000-0x00007FFE84229000-memory.dmp

memory/4404-120-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/808-122-0x0000000072380000-0x00000000724FD000-memory.dmp

memory/3372-124-0x0000000070D00000-0x0000000072017000-memory.dmp

memory/3372-127-0x0000000000F00000-0x0000000000FC6000-memory.dmp

memory/3372-128-0x00000000056A0000-0x0000000005732000-memory.dmp

memory/3372-129-0x0000000005D60000-0x0000000006306000-memory.dmp

memory/3372-130-0x0000000005A80000-0x0000000005C42000-memory.dmp

memory/3372-131-0x00000000058B0000-0x0000000005926000-memory.dmp

memory/3372-132-0x00000000057B0000-0x0000000005800000-memory.dmp

memory/3372-133-0x0000000005660000-0x000000000566A000-memory.dmp

memory/4404-134-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/3372-135-0x0000000006940000-0x0000000006E6C000-memory.dmp

memory/3372-136-0x0000000005CF0000-0x0000000005D0E000-memory.dmp

memory/3372-137-0x0000000006480000-0x00000000064E6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpC22.tmp

MD5 42c395b8db48b6ce3d34c301d1eba9d5
SHA1 b7cfa3de344814bec105391663c0df4a74310996
SHA256 5644546ecefc6786c7be5b1a89e935e640963ccd34b130f21baab9370cb9055d
SHA512 7b9214db96e9bec8745b4161a41c4c0520cdda9950f0cd3f12c7744227a25d639d07c0dd68b552cf1e032181c2e4f8297747f27bad6c7447b0f415a86bd82845

C:\Users\Admin\AppData\Local\Temp\tmpC45.tmp

MD5 22be08f683bcc01d7a9799bbd2c10041
SHA1 2efb6041cf3d6e67970135e592569c76fc4c41de
SHA256 451c2c0cf3b7cb412a05347c6e75ed8680f0d2e5f2ab0f64cc2436db9309a457
SHA512 0eef192b3d5abe5d2435acf54b42c729c3979e4ad0b73d36666521458043ee7df1e10386bef266d7df9c31db94fb2833152bb2798936cb2082715318ef05d936

memory/4404-158-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/4404-161-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/4404-164-0x0000000000400000-0x0000000002AFC000-memory.dmp