Malware Analysis Report

2024-12-08 01:44

Sample ID 240427-e5fg1abh2y
Target ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b
SHA256 ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b
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

ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b

Threat Level: Known bad

The file ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b was found to be: Known bad.

Malicious Activity Summary

sectoprat stealc discovery rat stealer trojan

Stealc

SectopRAT payload

SectopRAT

Downloads MZ/PE file

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-27 04:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-27 04:31

Reported

2024-04-27 04:33

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe N/A

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3476 set thread context of 4936 N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 4936 set thread context of 2752 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\u1n0.0.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\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\u1n0.2\run.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\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 2124 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe
PID 2124 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe
PID 2124 wrote to memory of 212 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe
PID 2124 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe
PID 2124 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe
PID 2124 wrote to memory of 3476 N/A C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe
PID 3476 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 3476 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 3476 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 3476 wrote to memory of 4936 N/A C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe C:\Windows\SysWOW64\cmd.exe
PID 4936 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4936 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4936 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4936 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4936 wrote to memory of 2752 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe

"C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe"

C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe

"C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe"

C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe

"C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2124 -ip 2124

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 1152

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
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
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
DE 185.172.128.228:80 185.172.128.228 tcp
DE 185.172.128.203:80 185.172.128.203 tcp
US 8.8.8.8:53 228.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 203.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 note.padd.cn.com udp
RO 176.97.76.106:80 note.padd.cn.com tcp
DE 185.172.128.111:80 185.172.128.111 tcp
US 8.8.8.8:53 106.76.97.176.in-addr.arpa udp
US 8.8.8.8:53 111.128.172.185.in-addr.arpa udp
DE 185.172.128.111:80 185.172.128.111 tcp
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 91.215.85.66 tcp
US 8.8.8.8:53 133.190.18.2.in-addr.arpa udp
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
US 8.8.8.8:53 udp

Files

memory/2124-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

memory/2124-2-0x00000000024C0000-0x000000000252D000-memory.dmp

memory/2124-3-0x0000000000400000-0x000000000086B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u1n0.0.exe

MD5 04696ec1f8146c9c1c49df81d25c6f89
SHA1 22f64e26ce186c22f7e8a0382ac47ddb2648da38
SHA256 d878971d46799a0082c3351e2d6e886e029131f37d7c599660e39def2a226f5d
SHA512 4c65a315b569d376b02bc62ef62a8269ad75972cd6a499ff659aa273941ae81bd9f99d32acc6c6a3447f4b0f77236787cff01c3ffef1e818e4c1aceb546e9e11

memory/212-14-0x0000000002E60000-0x0000000002E87000-memory.dmp

memory/212-13-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/212-15-0x0000000000400000-0x0000000002AFC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u1n0.1.zip

MD5 78d3ca6355c93c72b494bb6a498bf639
SHA1 2fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e
SHA256 a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
SHA512 1b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea

C:\Users\Admin\AppData\Local\Temp\u1n0.2\run.exe

MD5 9fb4770ced09aae3b437c1c6eb6d7334
SHA1 fe54b31b0db8665aa5b22bed147e8295afc88a03
SHA256 a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
SHA512 140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256

C:\Users\Admin\AppData\Local\Temp\u1n0.2\relay.dll

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

C:\Users\Admin\AppData\Local\Temp\u1n0.2\bunch.dat

MD5 1e8237d3028ab52821d69099e0954f97
SHA1 30a6ae353adda0c471c6ed5b7a2458b07185abf2
SHA256 9387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
SHA512 a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3

C:\Users\Admin\AppData\Local\Temp\u1n0.2\whale.dbf

MD5 a723bf46048e0bfb15b8d77d7a648c3e
SHA1 8952d3c34e9341e4425571e10f22b782695bb915
SHA256 b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
SHA512 ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273

memory/3476-101-0x0000000072F20000-0x000000007309B000-memory.dmp

memory/3476-102-0x00007FFE57BB0000-0x00007FFE57DA5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\u1n0.2\UIxMarketPlugin.dll

MD5 d1ba9412e78bfc98074c5d724a1a87d6
SHA1 0572f98d78fb0b366b5a086c2a74cc68b771d368
SHA256 cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
SHA512 8765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f

memory/2124-108-0x0000000000400000-0x000000000086B000-memory.dmp

memory/2124-109-0x00000000024C0000-0x000000000252D000-memory.dmp

memory/3476-110-0x0000000072F20000-0x000000007309B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\a4ae16cc

MD5 cbb876d840070feb31413735ffaa547a
SHA1 c09fa02c9113bbe78c0b02cc022b3386cea31f92
SHA256 074ab513cf9056cf341547871ea8711062013ba36a05defa51633ac79a283cf0
SHA512 682f4b484f7474ab7189ce9a424c9f83a2a4af6111e474c502b4ba519fc63088563fbee65caea1e129b66c1793bd845b157329a0771a45aeb07617798a0bc532

memory/212-113-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/4936-114-0x00007FFE57BB0000-0x00007FFE57DA5000-memory.dmp

memory/212-117-0x0000000002C50000-0x0000000002D50000-memory.dmp

memory/4936-118-0x0000000072F20000-0x000000007309B000-memory.dmp

memory/2752-121-0x00000000718A0000-0x0000000072AF4000-memory.dmp

memory/2752-124-0x0000000000E10000-0x0000000000ED6000-memory.dmp

memory/2752-125-0x0000000005500000-0x0000000005592000-memory.dmp

memory/2752-126-0x0000000005B50000-0x00000000060F4000-memory.dmp

memory/2752-127-0x0000000005780000-0x0000000005942000-memory.dmp

memory/2752-128-0x0000000005620000-0x0000000005696000-memory.dmp

memory/2752-129-0x00000000056F0000-0x0000000005740000-memory.dmp

memory/2752-130-0x00000000054E0000-0x00000000054EA000-memory.dmp

memory/2752-131-0x0000000006730000-0x0000000006C5C000-memory.dmp

memory/2752-132-0x0000000006270000-0x000000000628E000-memory.dmp

memory/2752-133-0x0000000006360000-0x00000000063C6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpCD45.tmp

MD5 42c395b8db48b6ce3d34c301d1eba9d5
SHA1 b7cfa3de344814bec105391663c0df4a74310996
SHA256 5644546ecefc6786c7be5b1a89e935e640963ccd34b130f21baab9370cb9055d
SHA512 7b9214db96e9bec8745b4161a41c4c0520cdda9950f0cd3f12c7744227a25d639d07c0dd68b552cf1e032181c2e4f8297747f27bad6c7447b0f415a86bd82845

C:\Users\Admin\AppData\Local\Temp\tmpCD67.tmp

MD5 49693267e0adbcd119f9f5e02adf3a80
SHA1 3ba3d7f89b8ad195ca82c92737e960e1f2b349df
SHA256 d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f
SHA512 b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

memory/2752-152-0x0000000007BA0000-0x0000000007BAA000-memory.dmp

memory/212-153-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/212-156-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/212-159-0x0000000000400000-0x0000000002AFC000-memory.dmp

memory/212-162-0x0000000000400000-0x0000000002AFC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-27 04:31

Reported

2024-04-27 04:33

Platform

win11-20240419-en

Max time kernel

146s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe

"C:\Users\Admin\AppData\Local\Temp\ad75a5e08b52342c80ad44cc715d086365053b53cb58b571db9f80fafb92c01b.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2832 -ip 2832

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2832 -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/2832-1-0x0000000000C10000-0x0000000000D10000-memory.dmp

memory/2832-2-0x0000000002610000-0x000000000267D000-memory.dmp

memory/2832-3-0x0000000000400000-0x000000000086B000-memory.dmp

memory/2832-6-0x0000000000C10000-0x0000000000D10000-memory.dmp

memory/2832-7-0x0000000000400000-0x000000000086B000-memory.dmp

memory/2832-10-0x0000000000400000-0x000000000086B000-memory.dmp