Malware Analysis Report

2024-11-16 13:30

Sample ID 240621-2xte8axhqj
Target Nitro Generator.exe
SHA256 6e832a90c7406c44e2dc752954c437b04a2a510d3325a3e69bcca0a942cfc294
Tags
xworm persistence rat 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6e832a90c7406c44e2dc752954c437b04a2a510d3325a3e69bcca0a942cfc294

Threat Level: Known bad

The file Nitro Generator.exe was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat trojan

Xworm

Detect Xworm Payload

Checks computer location settings

Drops startup file

Executes dropped EXE

Looks up external IP address via web service

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 22:58

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 22:58

Reported

2024-06-21 23:01

Platform

win10-20240404-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.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

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A
N/A N/A C:\ProgramData\NitroGen.exe N/A
N/A N/A C:\ProgramData\svchost N/A
N/A N/A C:\ProgramData\svchost N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" C:\ProgramData\SaveNitroCodes.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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe"

C:\ProgramData\SaveNitroCodes.exe

"C:\ProgramData\SaveNitroCodes.exe"

C:\ProgramData\NitroGen.exe

"C:\ProgramData\NitroGen.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

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
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 runderscore00-25851.portmap.host udp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
US 8.8.8.8:53 193.98.74.40.in-addr.arpa udp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp

Files

memory/4952-0-0x00007FFF8D653000-0x00007FFF8D654000-memory.dmp

memory/4952-1-0x0000000000F60000-0x0000000000F9E000-memory.dmp

memory/4952-2-0x0000000001610000-0x000000000164C000-memory.dmp

C:\ProgramData\NitroGen.exe

MD5 16c70bc93e70148d8e32877fb69c5163
SHA1 9997631ad75d02297a4c7a06c37db115a0a1c0ec
SHA256 b0c0ffb63ae352291b03770b081847a349f1c221a6f3a0cca1570050261f9f3d
SHA512 02242bdaa7b78378d3f8fc85f6a9d51eb8672a348c718ac4483dcddcf061994d8dc7dc8ead58a0b6903d44d9dc06ff17e4782598f25ac5e4ffd8a528a05373dd

C:\ProgramData\SaveNitroCodes.exe

MD5 00c32ab73202fbbeeb8b1c4c11331a46
SHA1 9e35253c5f3fa7251697fdeb9c845f02418204b1
SHA256 435d9e9f707f1f84b404461b4910b6292709fa28900623e35d6416200eedc39b
SHA512 bbfc662e5c13384ddde066b52617fc53c429b31cd96eea2907d0a82edd1e89dbd2b84554cf758d08dd26b24a9c801399a1d62221332f98a07902e925653689c5

memory/5028-13-0x0000000000060000-0x0000000000076000-memory.dmp

memory/4952-14-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

memory/5028-16-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

memory/5028-17-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

memory/4952-21-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

memory/5028-22-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

memory/5028-23-0x00007FFF8D650000-0x00007FFF8E03C000-memory.dmp

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

MD5 16c5fce5f7230eea11598ec11ed42862
SHA1 75392d4824706090f5e8907eee1059349c927600
SHA256 87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151
SHA512 153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-21 22:58

Reported

2024-06-21 23:01

Platform

win10v2004-20240508-en

Max time kernel

94s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\ProgramData\SaveNitroCodes.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:\ProgramData\SaveNitroCodes.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk C:\ProgramData\SaveNitroCodes.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A
N/A N/A C:\ProgramData\NitroGen.exe N/A
N/A N/A C:\ProgramData\svchost N/A
N/A N/A C:\ProgramData\svchost N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" C:\ProgramData\SaveNitroCodes.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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe"

C:\ProgramData\SaveNitroCodes.exe

"C:\ProgramData\SaveNitroCodes.exe"

C:\ProgramData\NitroGen.exe

"C:\ProgramData\NitroGen.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 runderscore00-25851.portmap.host udp
US 52.111.227.11:443 tcp

Files

memory/2680-0-0x00007FFBF81B3000-0x00007FFBF81B5000-memory.dmp

memory/2680-1-0x0000000000E60000-0x0000000000E9E000-memory.dmp

memory/2680-2-0x0000000003020000-0x000000000305C000-memory.dmp

C:\ProgramData\SaveNitroCodes.exe

MD5 00c32ab73202fbbeeb8b1c4c11331a46
SHA1 9e35253c5f3fa7251697fdeb9c845f02418204b1
SHA256 435d9e9f707f1f84b404461b4910b6292709fa28900623e35d6416200eedc39b
SHA512 bbfc662e5c13384ddde066b52617fc53c429b31cd96eea2907d0a82edd1e89dbd2b84554cf758d08dd26b24a9c801399a1d62221332f98a07902e925653689c5

C:\ProgramData\NitroGen.exe

MD5 16c70bc93e70148d8e32877fb69c5163
SHA1 9997631ad75d02297a4c7a06c37db115a0a1c0ec
SHA256 b0c0ffb63ae352291b03770b081847a349f1c221a6f3a0cca1570050261f9f3d
SHA512 02242bdaa7b78378d3f8fc85f6a9d51eb8672a348c718ac4483dcddcf061994d8dc7dc8ead58a0b6903d44d9dc06ff17e4782598f25ac5e4ffd8a528a05373dd

memory/4172-25-0x0000000000210000-0x0000000000226000-memory.dmp

memory/2680-26-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

memory/4172-27-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

memory/2680-28-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

memory/4172-30-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

memory/4172-34-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

memory/4172-35-0x00007FFBF81B0000-0x00007FFBF8C71000-memory.dmp

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

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-21 22:58

Reported

2024-06-21 23:01

Platform

win11-20240611-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.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

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A
N/A N/A C:\ProgramData\NitroGen.exe N/A
N/A N/A C:\ProgramData\svchost N/A
N/A N/A C:\ProgramData\svchost N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2394516847-3409208829-2230326962-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" C:\ProgramData\SaveNitroCodes.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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\SaveNitroCodes.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svchost N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\ProgramData\SaveNitroCodes.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe

"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe"

C:\ProgramData\SaveNitroCodes.exe

"C:\ProgramData\SaveNitroCodes.exe"

C:\ProgramData\NitroGen.exe

"C:\ProgramData\NitroGen.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

C:\ProgramData\svchost

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
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp
DE 193.161.193.99:25851 runderscore00-25851.portmap.host tcp

Files

memory/2940-0-0x00007FFA953B3000-0x00007FFA953B5000-memory.dmp

memory/2940-1-0x00000000000B0000-0x00000000000EE000-memory.dmp

memory/2940-2-0x000000001ABD0000-0x000000001AC0C000-memory.dmp

C:\ProgramData\SaveNitroCodes.exe

MD5 00c32ab73202fbbeeb8b1c4c11331a46
SHA1 9e35253c5f3fa7251697fdeb9c845f02418204b1
SHA256 435d9e9f707f1f84b404461b4910b6292709fa28900623e35d6416200eedc39b
SHA512 bbfc662e5c13384ddde066b52617fc53c429b31cd96eea2907d0a82edd1e89dbd2b84554cf758d08dd26b24a9c801399a1d62221332f98a07902e925653689c5

C:\ProgramData\NitroGen.exe

MD5 16c70bc93e70148d8e32877fb69c5163
SHA1 9997631ad75d02297a4c7a06c37db115a0a1c0ec
SHA256 b0c0ffb63ae352291b03770b081847a349f1c221a6f3a0cca1570050261f9f3d
SHA512 02242bdaa7b78378d3f8fc85f6a9d51eb8672a348c718ac4483dcddcf061994d8dc7dc8ead58a0b6903d44d9dc06ff17e4782598f25ac5e4ffd8a528a05373dd

memory/2940-26-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

memory/3476-25-0x0000000000F90000-0x0000000000FA6000-memory.dmp

memory/3476-27-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

memory/3476-29-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

memory/2940-33-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

memory/3476-34-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

memory/3476-35-0x00007FFA953B0000-0x00007FFA95E72000-memory.dmp

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

MD5 2cbbb74b7da1f720b48ed31085cbd5b8
SHA1 79caa9a3ea8abe1b9c4326c3633da64a5f724964
SHA256 e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
SHA512 ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9