Malware Analysis Report

2024-08-06 18:13

Sample ID 240703-n68plsseqe
Target SteamUDP.exe
SHA256 903ad14b353ea5efc0dfb4cb91421a17a245aa0b5e45b9ff6653edd2a881df7a
Tags
xenorat rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

903ad14b353ea5efc0dfb4cb91421a17a245aa0b5e45b9ff6653edd2a881df7a

Threat Level: Known bad

The file SteamUDP.exe was found to be: Known bad.

Malicious Activity Summary

xenorat rat trojan

Xenorat family

XenorRat

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
Persistence
TA0003
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-07-03 12:01

Signatures

Xenorat family

xenorat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-03 12:01

Reported

2024-07-03 12:02

Platform

win10-20240404-en

Max time kernel

25s

Max time network

24s

Command Line

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

Signatures

XenorRat

trojan rat xenorat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3192 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 3192 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 3192 wrote to memory of 2468 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 2468 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 3272 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 2468 wrote to memory of 2380 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\cmd.exe
PID 2468 wrote to memory of 2380 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\cmd.exe
PID 2468 wrote to memory of 2380 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\choice.exe
PID 2380 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\choice.exe
PID 2380 wrote to memory of 2940 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\choice.exe

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe

"C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /Create /TN "SteamUDP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7976.tmp" /F

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /query /v /fo csv

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /delete /tn "\SteamUDP" /f

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe"

C:\Windows\SysWOW64\choice.exe

choice /C Y /N /D Y /T 3

Network

Country Destination Domain Proto
NL 37.120.141.155:22914 tcp
US 8.8.8.8:53 155.141.120.37.in-addr.arpa udp
NL 37.120.141.155:22914 tcp
NL 37.120.141.155:22914 tcp

Files

memory/3192-0-0x0000000073E3E000-0x0000000073E3F000-memory.dmp

memory/3192-1-0x0000000000DB0000-0x0000000000DD2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe

MD5 c98e2b56dcd5a3f3aaa0abb0278755b2
SHA1 b5999f967c235e3f7147a5fabdf8429bee5a36ff
SHA256 903ad14b353ea5efc0dfb4cb91421a17a245aa0b5e45b9ff6653edd2a881df7a
SHA512 0c7a4db2e66e601cf0a23392991ddde9d520cfb07d596323a8469c92bddb000e395d9af929d335cc17443412679b7f40224c298190353a9cf8b46dfda4f27153

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SteamUDP.exe.log

MD5 957779c42144282d8cd83192b8fbc7cf
SHA1 de83d08d2cca06b9ff3d1ef239d6b60b705d25fe
SHA256 0d7ca7ba65e2b465e4878e324ceab8f8981f5ec06dcf5bc32559a4467a9c7d51
SHA512 f1549c61b4f2906d13b2aabb74772c2bc826cd42373d7bb6c48cbb125d5aa2ec17617e6b5e67e8aae3bb5790cc831cdba48a45008ed01df4fba8be448cce39fd

memory/2468-9-0x0000000073E30000-0x000000007451E000-memory.dmp

memory/2468-10-0x0000000073E30000-0x000000007451E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp7976.tmp

MD5 3e416c7f65c19033c2c17e7f0bc2bfd8
SHA1 edc2d8b19e94e8d29579baf5e01c5fe057425712
SHA256 fb1d16435bee9ea3fa3d171f3d01818c1c1dd3ce5e47d9292c7b0089ad6f2773
SHA512 debae6c61bcf8e34575d4eec2334c27b0205b5a6b428e9f17ff25a55bea845bb5131c68f0ba7384e781b2b9d2dfd1eb2ce93aef47d4fe2dee34a21c147973524

memory/2468-13-0x0000000005540000-0x00000000055A6000-memory.dmp

memory/2468-14-0x0000000073E30000-0x000000007451E000-memory.dmp

memory/2468-15-0x0000000073E30000-0x000000007451E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-03 12:01

Reported

2024-07-03 12:02

Platform

win10v2004-20240508-en

Max time kernel

33s

Max time network

34s

Command Line

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

Signatures

XenorRat

trojan rat xenorat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2760 wrote to memory of 3908 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 2760 wrote to memory of 3908 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 2760 wrote to memory of 3908 N/A C:\Users\Admin\AppData\Local\Temp\SteamUDP.exe C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe
PID 3908 wrote to memory of 1792 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 3908 wrote to memory of 1792 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe
PID 3908 wrote to memory of 1792 N/A C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe C:\Windows\SysWOW64\schtasks.exe

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe

"C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /Create /TN "SteamUDP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp56EA.tmp" /F

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
NL 37.120.141.155:22914 tcp

Files

memory/2760-0-0x000000007484E000-0x000000007484F000-memory.dmp

memory/2760-1-0x0000000000CF0000-0x0000000000D12000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\XenoManager\SteamUDP.exe

MD5 c98e2b56dcd5a3f3aaa0abb0278755b2
SHA1 b5999f967c235e3f7147a5fabdf8429bee5a36ff
SHA256 903ad14b353ea5efc0dfb4cb91421a17a245aa0b5e45b9ff6653edd2a881df7a
SHA512 0c7a4db2e66e601cf0a23392991ddde9d520cfb07d596323a8469c92bddb000e395d9af929d335cc17443412679b7f40224c298190353a9cf8b46dfda4f27153

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SteamUDP.exe.log

MD5 916851e072fbabc4796d8916c5131092
SHA1 d48a602229a690c512d5fdaf4c8d77547a88e7a2
SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
SHA512 07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

memory/3908-15-0x0000000074840000-0x0000000074FF0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp56EA.tmp

MD5 3e416c7f65c19033c2c17e7f0bc2bfd8
SHA1 edc2d8b19e94e8d29579baf5e01c5fe057425712
SHA256 fb1d16435bee9ea3fa3d171f3d01818c1c1dd3ce5e47d9292c7b0089ad6f2773
SHA512 debae6c61bcf8e34575d4eec2334c27b0205b5a6b428e9f17ff25a55bea845bb5131c68f0ba7384e781b2b9d2dfd1eb2ce93aef47d4fe2dee34a21c147973524

memory/3908-18-0x0000000074840000-0x0000000074FF0000-memory.dmp