Malware Analysis Report

2024-09-11 13:45

Sample ID 240614-c4jrxsscrb
Target a71aaa9e10f9dc8701c208df3832a3b8.bin
SHA256 c8553c891fbe97b0d5ff24a278540e019daac48c72da39a73f6e530a4ba16324
Tags
xworm execution 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

c8553c891fbe97b0d5ff24a278540e019daac48c72da39a73f6e530a4ba16324

Threat Level: Known bad

The file a71aaa9e10f9dc8701c208df3832a3b8.bin was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Xworm

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Privilege Escalation
TA0004
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
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 02:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 02:37

Reported

2024-06-14 02:40

Platform

win7-20240220-en

Max time kernel

141s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 8.tcp.ngrok.io N/A N/A
N/A 8.tcp.ngrok.io N/A N/A
N/A 8.tcp.ngrok.io N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File created C:\Windows\System32\svchost‌.exe C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe N/A
File opened for modification C:\Windows\System32\svchost‌.exe C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\svchost‌.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1992 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe C:\Windows\system32\schtasks.exe
PID 1992 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe C:\Windows\system32\schtasks.exe
PID 1992 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe C:\Windows\system32\schtasks.exe
PID 2616 wrote to memory of 2552 N/A C:\Windows\system32\taskeng.exe C:\Windows\System32\svchost‌.exe
PID 2616 wrote to memory of 2552 N/A C:\Windows\system32\taskeng.exe C:\Windows\System32\svchost‌.exe
PID 2616 wrote to memory of 2552 N/A C:\Windows\system32\taskeng.exe C:\Windows\System32\svchost‌.exe
PID 2552 wrote to memory of 2556 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2552 wrote to memory of 2556 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2552 wrote to memory of 2556 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2552 wrote to memory of 2392 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2552 wrote to memory of 2392 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2552 wrote to memory of 2392 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe

"C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe"

C:\Windows\system32\schtasks.exe

schtasks /run /TN Update

C:\Windows\system32\taskeng.exe

taskeng.exe {3342A362-33A4-400D-974D-726DF85656A1} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]

C:\Windows\System32\svchost‌.exe

C:\Windows\System32\svchost‌.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\svchost‌.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost‌.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 142.250.179.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 3.19.130.43:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp

Files

memory/1992-0-0x000007FEF5383000-0x000007FEF5384000-memory.dmp

memory/1992-1-0x0000000000F90000-0x0000000000FD6000-memory.dmp

C:\Windows\System32\svchost‌.exe

MD5 3104737e86d59919380e95c5d85a624d
SHA1 a0190f12732a7b95d84d5b3da3257815b8e6af46
SHA256 96595ae66b99cd392d0aa69da8ed7ad69affcdf0731e785bcc474c33b5094773
SHA512 c79243de42003879557c0f281588573df8887fcaef747b0fc2bda056c1650c0c9a30400a3c037e767a53dc5ae1de715b39256547bf9005fd75fef6f11bc0eca9

memory/2552-7-0x0000000000180000-0x0000000000198000-memory.dmp

memory/2556-12-0x000000001B7B0000-0x000000001BA92000-memory.dmp

memory/2556-13-0x0000000002770000-0x0000000002778000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 48a7a81810edb39e0563413e575985c1
SHA1 079c95ced560a6d76846f856aab6dfd53929c933
SHA256 711f344da74ce07f7496d3aae59ffef2552903e572e447226d85c0953d34d036
SHA512 3c7f41f81013b4e2584b994228ac84e646be933b01417a2b464caaffe250ed7ea5993524af86c38aff55dae8ee89e241def7be222efeddc61b8e5c857d4614df

memory/2392-19-0x000000001B700000-0x000000001B9E2000-memory.dmp

memory/2392-20-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

memory/2552-21-0x000007FEF4990000-0x000007FEF537C000-memory.dmp

memory/2552-22-0x000007FEF4993000-0x000007FEF4994000-memory.dmp

memory/2552-23-0x000007FEF4990000-0x000007FEF537C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 02:37

Reported

2024-06-14 02:40

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Windows\System32\svchost‌.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 8.tcp.ngrok.io N/A N/A
N/A 8.tcp.ngrok.io N/A N/A
N/A 8.tcp.ngrok.io N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\System32\svchost‌.exe C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe N/A
File opened for modification C:\Windows\System32\svchost‌.exe C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\svchost‌.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\System32\svchost‌.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5056 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe C:\Windows\SYSTEM32\schtasks.exe
PID 5056 wrote to memory of 4304 N/A C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe C:\Windows\SYSTEM32\schtasks.exe
PID 1464 wrote to memory of 4948 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 4948 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 2372 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1464 wrote to memory of 2372 N/A C:\Windows\System32\svchost‌.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe

"C:\Users\Admin\AppData\Local\Temp\7761d76284feb79783d96c62b2088d14b39d9f5b485b429f2c0f69d081201629.exe"

C:\Windows\SYSTEM32\schtasks.exe

schtasks /run /TN Update

C:\Windows\System32\svchost‌.exe

C:\Windows\System32\svchost‌.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\svchost‌.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost‌.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
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 142.250.179.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.179.250.142.in-addr.arpa udp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 198.121.18.2.in-addr.arpa udp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 3.142.167.54:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 8.tcp.ngrok.io udp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 13.58.157.220:11208 8.tcp.ngrok.io tcp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

memory/5056-0-0x00007FFB5BAB0000-0x00007FFB5BCA5000-memory.dmp

memory/5056-1-0x0000000000F90000-0x0000000000FD6000-memory.dmp

memory/5056-5-0x00007FFB5BAB0000-0x00007FFB5BCA5000-memory.dmp

C:\Windows\System32\svchost‌.exe

MD5 3104737e86d59919380e95c5d85a624d
SHA1 a0190f12732a7b95d84d5b3da3257815b8e6af46
SHA256 96595ae66b99cd392d0aa69da8ed7ad69affcdf0731e785bcc474c33b5094773
SHA512 c79243de42003879557c0f281588573df8887fcaef747b0fc2bda056c1650c0c9a30400a3c037e767a53dc5ae1de715b39256547bf9005fd75fef6f11bc0eca9

memory/1464-8-0x00007FFB5BAB0000-0x00007FFB5BCA5000-memory.dmp

memory/1464-9-0x0000000000E70000-0x0000000000E88000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1xl0ce5q.tko.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4948-19-0x000001D6B9DA0000-0x000001D6B9DC2000-memory.dmp

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

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

memory/1464-34-0x00007FFB5BAB0000-0x00007FFB5BCA5000-memory.dmp

memory/1464-35-0x00007FFB5BAB0000-0x00007FFB5BCA5000-memory.dmp