Malware Analysis Report

2024-12-08 01:47

Sample ID 240427-1re5zahc96
Target 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
SHA256 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
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

4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a

Threat Level: Known bad

The file 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a was found to be: Known bad.

Malicious Activity Summary

sectoprat stealc discovery rat spyware stealer trojan

SectopRAT payload

Stealc

SectopRAT

Downloads MZ/PE file

Reads data files stored by FTP clients

Checks computer location settings

Loads dropped DLL

Reads user/profile data of web browsers

Executes dropped EXE

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-27 21:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-27 21:52

Reported

2024-04-27 21:55

Platform

win10v2004-20240426-en

Max time kernel

133s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2ug.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 4240 set thread context of 3160 N/A C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 3160 set thread context of 2464 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\u2ug.0.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2ug.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\u2ug.2\run.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u2ug.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 3688 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe
PID 3688 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe
PID 3688 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe
PID 3688 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe
PID 3688 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe
PID 3688 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe
PID 4240 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 4240 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 4240 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 4240 wrote to memory of 3160 N/A C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 3160 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3160 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3160 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3160 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 3160 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe

"C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe"

C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe

"C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe"

C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe

"C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3688 -ip 3688

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3688 -s 1152

C:\Windows\SysWOW64\cmd.exe

C:\Windows\SysWOW64\cmd.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 2420 -ip 2420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 2376

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
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
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 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 note.padd.cn.com udp
RO 176.97.76.106:80 note.padd.cn.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa 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 8.8.8.8:53 106.76.97.176.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
DE 185.172.128.76:80 185.172.128.76 tcp
US 8.8.8.8:53 76.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 151.143.109.104.in-addr.arpa udp
RU 91.215.85.66:15647 tcp
US 8.8.8.8:53 66.85.215.91.in-addr.arpa udp
RU 91.215.85.66:9000 tcp
US 8.8.8.8:53 200.131.50.23.in-addr.arpa udp
US 8.8.8.8:53 241.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3688-1-0x0000000002B80000-0x0000000002C80000-memory.dmp

memory/3688-2-0x0000000002FE0000-0x000000000304D000-memory.dmp

memory/3688-3-0x0000000000400000-0x0000000002B15000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2ug.0.exe

MD5 095481b86d31bf49a325d3e98d2dc476
SHA1 1a7dec1679e716bb9635a1d92e27a20184d5ef61
SHA256 db4defb73e7393df8472a1133abbdd60ac42a9ca063cf0e2c9eb7c2760eddc32
SHA512 5e6a376ee0b6d8d3b606f5b44081d8b46ae3f2a2d02116dde7187cf7771d65ecafee9396ac146113d5843e7b371053ab5699665ed6bc4ee054b84481f37b771c

memory/2420-14-0x0000000002C40000-0x0000000002C67000-memory.dmp

memory/2420-13-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

memory/2420-15-0x0000000000400000-0x0000000002AF0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2ug.1.zip

MD5 78d3ca6355c93c72b494bb6a498bf639
SHA1 2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e
SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
SHA512 1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

C:\Users\Admin\AppData\Local\Temp\u2ug.2\run.exe

MD5 9fb4770ced09aae3b437c1c6eb6d7334
SHA1 fe54b31b0db8665aa5b22bed147e8295afc88a03
SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
SHA512 140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

C:\Users\Admin\AppData\Local\Temp\u2ug.2\relay.dll

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

C:\Users\Admin\AppData\Local\Temp\u2ug.2\whale.dbf

MD5 a723bf46048e0bfb15b8d77d7a648c3e
SHA1 8952d3c34e9341e4425571e10f22b782695bb915
SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
SHA512 ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

C:\Users\Admin\AppData\Local\Temp\u2ug.2\bunch.dat

MD5 1e8237d3028ab52821d69099e0954f97
SHA1 30a6ae353adda0c471c6ed5b7a2458b07185abf2
SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
SHA512 a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

memory/2420-101-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/4240-117-0x0000000072590000-0x000000007270B000-memory.dmp

memory/4240-135-0x00007FF978050000-0x00007FF978245000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u2ug.2\UIxMarketPlugin.dll

MD5 d1ba9412e78bfc98074c5d724a1a87d6
SHA1 0572f98d78fb0b366b5a086c2a74cc68b771d368
SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
SHA512 8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

memory/3688-145-0x0000000002FE0000-0x000000000304D000-memory.dmp

memory/3688-144-0x0000000000400000-0x0000000002B15000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/2420-184-0x0000000000400000-0x0000000002AF0000-memory.dmp

memory/4240-185-0x0000000072590000-0x000000007270B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\b1d7794d

MD5 415ea756f1f978ba19bf0d99b06c55b5
SHA1 ba8484718abb281708c93d00fefce95e20a566e4
SHA256 b16c0782b7f12fc682937a5ac1c77a7aa0072d085ac8c3c2779b12653ade63be
SHA512 4f088665c2a271d8c7c793c7706fcdfe58f90cf28ffd3a2c67072b3fbdcab3afde5f220b9d34a33e429eaec5f7724bcfc4a92dc0f61e0534db43e16563f7136f

memory/3160-188-0x00007FF978050000-0x00007FF978245000-memory.dmp

memory/3160-190-0x0000000072590000-0x000000007270B000-memory.dmp

memory/2464-192-0x00000000732D0000-0x0000000074524000-memory.dmp

memory/2464-195-0x0000000000D10000-0x0000000000DD6000-memory.dmp

memory/2464-196-0x0000000005410000-0x00000000054A2000-memory.dmp

memory/2464-197-0x0000000005AE0000-0x0000000006084000-memory.dmp

memory/2464-198-0x00000000058D0000-0x0000000005A92000-memory.dmp

memory/2464-199-0x00000000055B0000-0x0000000005626000-memory.dmp

memory/2464-200-0x00000000054D0000-0x0000000005520000-memory.dmp

memory/2464-201-0x00000000053D0000-0x00000000053DA000-memory.dmp

memory/2464-202-0x00000000066C0000-0x0000000006BEC000-memory.dmp

memory/2464-203-0x0000000005870000-0x000000000588E000-memory.dmp

memory/2464-204-0x0000000006200000-0x0000000006266000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpEE87.tmp

MD5 42c395b8db48b6ce3d34c301d1eba9d5
SHA1 b7cfa3de344814bec105391663c0df4a74310996
SHA256 5644546ecefc6786c7be5b1a89e935e640963ccd34b130f21baab9370cb9055d
SHA512 7b9214db96e9bec8745b4161a41c4c0520cdda9950f0cd3f12c7744227a25d639d07c0dd68b552cf1e032181c2e4f8297747f27bad6c7447b0f415a86bd82845

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

MD5 49693267e0adbcd119f9f5e02adf3a80
SHA1 3ba3d7f89b8ad195ca82c92737e960e1f2b349df
SHA256 d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f
SHA512 b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

memory/2464-223-0x0000000007A40000-0x0000000007A4A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-27 21:52

Reported

2024-04-27 21:55

Platform

win11-20240419-en

Max time kernel

46s

Max time network

55s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe

"C:\Users\Admin\AppData\Local\Temp\4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3772 -ip 3772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3772 -s 488

Network

Country Destination Domain Proto
DE 185.172.128.228:80 tcp
DE 185.172.128.203:80 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/3772-1-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

memory/3772-2-0x0000000004850000-0x00000000048BD000-memory.dmp

memory/3772-3-0x0000000000400000-0x0000000002B15000-memory.dmp

memory/3772-5-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

memory/3772-7-0x0000000004850000-0x00000000048BD000-memory.dmp

memory/3772-8-0x0000000000400000-0x0000000002B15000-memory.dmp

memory/3772-11-0x0000000000400000-0x0000000002B15000-memory.dmp