xworm | b644ae851f592e5a8ae4d3fe3d1e44cb0f5d0e03f68464867c1e5fd934ee7887

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/06/2024, 23:37

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General

Target
nitro 2.exe
Size 52KB
Sample240612-3mfbaavgpc
SHA256 b644ae851f592e5a8ae4d3fe3d1e44cb0f5d0e03f68464867c1e5fd934ee7887
MD5 56abcb886b78f154b9063404f06f1374
SHA1 86d34beca40992416149b217aa53a0ec515de86e
SHA512 591e01d28969282fc0f81c98599e4cec8f33d7fa8a064c04771c4316f493a1757335053fb0319d7c381863cce2245b6f20fdeb27987d189f1eb3a5486709a95f
SSDEEP 1536:04bbqnPISXvvgjFI9AH6vOw4Fk64fUX8r:0SqPpvvgjFI9AuOwVhcX8r
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

late-unfortunately.gl.at.ply.gg:6969
192.168.1.60:6969

Mutex

VwUS68C0jR1ZRLhu

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1340-1-0x0000000000B60000-0x0000000000B72000-memory.dmp	family_xworm
behavioral2/files/0x0009000000022ac3-53.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1740	powershell.exe
4684	powershell.exe
1924	powershell.exe
4312	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	nitro 2.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\planet VPN.lnk	nitro 2.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\planet VPN.lnk	nitro 2.exe

Executes dropped EXE 3 IoCs

pid	Process
4660	planet VPN
3912	planet VPN
2212	planet VPN

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\planet VPN = "C:\\Users\\Admin\\AppData\\Roaming\\planet VPN"	nitro 2.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1740	powershell.exe
1740	powershell.exe
4684	powershell.exe
4684	powershell.exe
1924	powershell.exe
1924	powershell.exe
4312	powershell.exe
4312	powershell.exe
1340	nitro 2.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	nitro 2.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	4684	powershell.exe
Token: SeDebugPrivilege	1924	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	1340	nitro 2.exe
Token: SeDebugPrivilege	4660	planet VPN
Token: SeDebugPrivilege	3912	planet VPN
Token: SeDebugPrivilege	2212	planet VPN

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1340	nitro 2.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 1740	1340	nitro 2.exe	91
PID 1340 wrote to memory of 1740	1340	nitro 2.exe	91
PID 1340 wrote to memory of 4684	1340	nitro 2.exe	94
PID 1340 wrote to memory of 4684	1340	nitro 2.exe	94
PID 1340 wrote to memory of 1924	1340	nitro 2.exe	96
PID 1340 wrote to memory of 1924	1340	nitro 2.exe	96
PID 1340 wrote to memory of 4312	1340	nitro 2.exe	98
PID 1340 wrote to memory of 4312	1340	nitro 2.exe	98
PID 1340 wrote to memory of 3380	1340	nitro 2.exe	100
PID 1340 wrote to memory of 3380	1340	nitro 2.exe	100

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\nitro 2.exe
"C:\Users\Admin\AppData\Local\Temp\nitro 2.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340
- 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\nitro 2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'nitro 2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4684
- 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\Roaming\planet VPN'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'planet VPN'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4312
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "planet VPN" /tr "C:\Users\Admin\AppData\Roaming\planet VPN"
  2⤵
  - Creates scheduled task(s)
  PID:3380

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3728

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost
1⤵
PID:1412

C:\Users\Admin\AppData\Roaming\planet VPN
"C:\Users\Admin\AppData\Roaming\planet VPN"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4660

C:\Users\Admin\AppData\Roaming\planet VPN
"C:\Users\Admin\AppData\Roaming\planet VPN"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3912

C:\Users\Admin\AppData\Roaming\planet VPN
"C:\Users\Admin\AppData\Roaming\planet VPN"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

planet VPN.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\planet VPN.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 cf5a1c42641a83dd41fe89923591962b7ad189006342c7a67669239688f84a2d
MD5 0026cdd9bbc34b9de2447c0eb04c14b5
SHA1 ab7713fe5fbbb23031937dd1dc7d0fa238884ad4
SHA512 62aab723672e2731946f4bbf6a3d92609ff94384e324f3c50e803095529baf848ce2cd37219a059ced4c3f559e598bd9b900b9dd8aa0657adca6d845127797fe
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68
MD5 d8cb3e9459807e35f02130fad3f9860d
SHA1 5af7f32cb8a30e850892b15e9164030a041f4bd6
SHA512 045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184
MD5 SHA1 SHA512

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__PSScriptPolicyTest_1zcjvaov.ck4.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1zcjvaov.ck4.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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planet VPN

Path C:\Users\Admin\AppData\Roaming\planet VPN
Size 52KB
SHA256 b644ae851f592e5a8ae4d3fe3d1e44cb0f5d0e03f68464867c1e5fd934ee7887
MD5 56abcb886b78f154b9063404f06f1374
SHA1 86d34beca40992416149b217aa53a0ec515de86e
SHA512 591e01d28969282fc0f81c98599e4cec8f33d7fa8a064c04771c4316f493a1757335053fb0319d7c381863cce2245b6f20fdeb27987d189f1eb3a5486709a95f
SSDEEP 1536:04bbqnPISXvvgjFI9AH6vOw4Fk64fUX8r:0SqPpvvgjFI9AuOwVhcX8r
MD5 SHA1 SHA512 SSDEEP

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memory/1340-1-0x0000000000B60000-0x0000000000B72000-memory.dmp

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memory/1340-0-0x00007FF8418E3000-0x00007FF8418E5000-memory.dmp

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memory/1340-2-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1340-52-0x00007FF8418E0000-0x00007FF8423A1000-memory.dmp

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memory/1740-12-0x000001F411D60000-0x000001F411D82000-memory.dmp

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