Malware Analysis Report

2024-09-11 14:03

Sample ID 240615-bq9whstgjg
Target 426d8c689450dc785db30bf449c1385d.bin
SHA256 7ff89a7a820c063a4dd52de612e16611bb330fa4b513f08141584a281ef844e6
Tags
xworm execution persistence 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

7ff89a7a820c063a4dd52de612e16611bb330fa4b513f08141584a281ef844e6

Threat Level: Known bad

The file 426d8c689450dc785db30bf449c1385d.bin was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm

Xworm family

Command and Scripting Interpreter: PowerShell

Drops startup file

Checks computer location settings

Adds Run key to start application

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
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

2024-06-15 01:22

Signatures

Detect Xworm Payload

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

Xworm family

xworm

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 01:22

Reported

2024-06-15 01:24

Platform

win7-20240220-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
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
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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe" C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A 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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.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\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2480 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2532 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2944 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2480 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe

"C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '426d8c689450dc785db30bf449c1385d.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\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 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp

Files

memory/2480-0-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

memory/2480-1-0x0000000000D40000-0x0000000000D56000-memory.dmp

memory/2480-2-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

memory/2532-7-0x0000000002E30000-0x0000000002EB0000-memory.dmp

memory/2532-8-0x000000001B720000-0x000000001BA02000-memory.dmp

memory/2532-9-0x00000000022B0000-0x00000000022B8000-memory.dmp

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

MD5 f7d976977d3de616358ded8cd95d2931
SHA1 a43c2938a8445ca3f0bb201bc0869da70afada9d
SHA256 580e15b674546402c981692ba81e72b2b5126cdd68ce95588cb855cc60d99606
SHA512 96f0a8192d69daf290ae6c1fc029492c528692a33015843fdf1174953da1683073370f7ecd30d87e09bfe52e18d76a145ae94f32af225c7ca41bee348ae7c955

memory/2572-15-0x000000001B610000-0x000000001B8F2000-memory.dmp

memory/2572-16-0x0000000002860000-0x0000000002868000-memory.dmp

memory/2480-31-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

memory/2480-32-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 01:22

Reported

2024-06-15 01:24

Platform

win10v2004-20240611-en

Max time kernel

125s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
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
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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe" C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A 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\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\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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.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\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2308 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 1348 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 760 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 1720 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2308 wrote to memory of 1720 N/A C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe

"C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\426d8c689450dc785db30bf449c1385d.exe'

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3884,i,7977653611488681184,6839495125838449898,262144 --variations-seed-version --mojo-platform-channel-handle=1292 /prefetch:8

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '426d8c689450dc785db30bf449c1385d.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\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
BE 2.17.107.98:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 98.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 232.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp

Files

memory/2308-1-0x00007FFD54073000-0x00007FFD54075000-memory.dmp

memory/2308-0-0x0000000000F90000-0x0000000000FA6000-memory.dmp

memory/2308-2-0x00007FFD54070000-0x00007FFD54B31000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tfrbrxm2.p4o.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1348-8-0x0000025D2A170000-0x0000025D2A192000-memory.dmp

memory/1348-9-0x00007FFD54070000-0x00007FFD54B31000-memory.dmp

memory/1348-15-0x00007FFD54070000-0x00007FFD54B31000-memory.dmp

memory/1348-14-0x00007FFD54070000-0x00007FFD54B31000-memory.dmp

memory/1348-18-0x00007FFD54070000-0x00007FFD54B31000-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 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

MD5 3db1c0d23daacf01eb99125ccc2787d3
SHA1 0849528de1ba411279231d635d8f39d54cc829d2
SHA256 bceb96f5c3d31447980eb8cd891bba75b3e5b6eb60abf4d829fc13cd8faf2582
SHA512 3d84635a3395bca1d91ce182ccfb9e38c8da87ad678704673a72d580e4251cedc5a6b2a89040a172a5687b67952e74a13673bd115bce7bdabaed06f89323de5b

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

MD5 51cf8df21f531e31f7740b4ec487a48a
SHA1 40c6a73b22d71625a62df109aefc92a5f9b9d13e
SHA256 263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d
SHA512 57a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368

memory/2308-57-0x00007FFD54070000-0x00007FFD54B31000-memory.dmp