Malware Analysis Report

2024-10-10 10:40

Sample ID 240610-hvlstaec55
Target 6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694
SHA256 6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694
Tags
socks5systemz botnet discovery
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

6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694

Threat Level: Known bad

The file 6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Executes dropped EXE

Loads dropped DLL

Unexpected DNS network traffic destination

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 07:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 07:03

Reported

2024-06-10 07:08

Platform

win7-20240508-en

Max time kernel

293s

Max time network

248s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

Signatures

Detect Socks5Systemz Payload

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

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 141.98.234.31 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 1660 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 2928 wrote to memory of 2600 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2600 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2600 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2600 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2488 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2488 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2488 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2928 wrote to memory of 2488 N/A C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe

"C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp

"C:\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp" /SL5="$30144,4705933,54272,C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s

Network

Country Destination Domain Proto
HK 141.98.234.31:53 bmdeswn.com udp
BG 93.123.39.193:80 bmdeswn.com tcp
BG 93.123.39.193:80 bmdeswn.com tcp
BG 93.123.39.193:80 bmdeswn.com tcp

Files

memory/1660-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1660-3-0x0000000000401000-0x000000000040B000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-27CTC.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp

MD5 dff4f58a01a8e88e4a2f821ca761d901
SHA1 e67e24669220213f895b68c0d662b02b03469b4a
SHA256 91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76
SHA512 049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

memory/2928-12-0x0000000000400000-0x00000000004BA000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-6T76I.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-6T76I.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

MD5 b379084cce42ad0c67a15931820e68dc
SHA1 2317388d90970533705fc5b09aec5faaf6a8d7c6
SHA256 1a280d6f2a1926aec0b5123bcfe2ddb5a396ccd455e352f1714b0c3164daf261
SHA512 f9972e405f2dab57438da3ae871e686a884d54a6b1e28ea56053b77ab5a9c300d75baf593d2b978df086323038a3b944dfca36dc265fe1b171ee78408296b2d3

memory/2600-65-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2928-64-0x0000000003590000-0x0000000003855000-memory.dmp

memory/2600-66-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2600-69-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-71-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1660-73-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2928-74-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/2488-75-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-78-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2928-79-0x0000000003590000-0x0000000003855000-memory.dmp

memory/2488-82-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-85-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-88-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-91-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-92-0x00000000025D0000-0x0000000002672000-memory.dmp

memory/2488-98-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-101-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-104-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-107-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-110-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-113-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-117-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-120-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-123-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-126-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-129-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-132-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/2488-137-0x0000000000400000-0x00000000006C5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 07:03

Reported

2024-06-10 07:08

Platform

win10-20240404-en

Max time kernel

293s

Max time network

299s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

Signatures

Detect Socks5Systemz Payload

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

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 152.89.198.214 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 420 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 420 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 420 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp
PID 2992 wrote to memory of 1128 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2992 wrote to memory of 1128 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2992 wrote to memory of 1128 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2992 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2992 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
PID 2992 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe

"C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp

"C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp" /SL5="$801F8,4705933,54272,C:\Users\Admin\AppData\Local\Temp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.exe"

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
RU 152.89.198.214:53 boyuety.com udp
BG 93.123.39.193:80 boyuety.com tcp
US 8.8.8.8:53 f.f.f.f.4.8.4.8.7.5.4.1.4.b.0.5.0.0.0.0.0.0.0.0.6.d.6.c.9.5.8.9.ip6.arpa udp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
US 8.8.8.8:53 193.39.123.93.in-addr.arpa udp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp
BG 93.123.39.193:80 boyuety.com tcp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
BG 93.123.39.193:80 boyuety.com tcp

Files

memory/420-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/420-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-9V4VF.tmp\6cc715ffbdf3885f192c90e59cca9d07d48686f320c0147da30ffeb779514694.tmp

MD5 dff4f58a01a8e88e4a2f821ca761d901
SHA1 e67e24669220213f895b68c0d662b02b03469b4a
SHA256 91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76
SHA512 049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

\Users\Admin\AppData\Local\Temp\is-OM9R6.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/2992-16-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe

MD5 b379084cce42ad0c67a15931820e68dc
SHA1 2317388d90970533705fc5b09aec5faaf6a8d7c6
SHA256 1a280d6f2a1926aec0b5123bcfe2ddb5a396ccd455e352f1714b0c3164daf261
SHA512 f9972e405f2dab57438da3ae871e686a884d54a6b1e28ea56053b77ab5a9c300d75baf593d2b978df086323038a3b944dfca36dc265fe1b171ee78408296b2d3

memory/1128-59-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1128-60-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1128-63-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-66-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/420-67-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2992-68-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/1904-69-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-72-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-75-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-78-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-81-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-84-0x00000000008F0000-0x0000000000992000-memory.dmp

memory/1904-86-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-91-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-94-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-97-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-100-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-103-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-106-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-110-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-113-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-116-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-119-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-122-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-125-0x0000000000400000-0x00000000006C5000-memory.dmp

memory/1904-130-0x0000000000400000-0x00000000006C5000-memory.dmp