xworm | 7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/08/2024, 16:13

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General

Target

7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe
Size

1.8MB
MD5

d2863cfe21865a583aa3f0123d30fa3d
SHA1

d124b631777d63edb0086225053af3d1a65effbe
SHA256

7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01
SHA512

477011b773c11919e7f90394a853f515695fc91c713848d50e498d8325814fa4233e8629ea0e7fc9b565e23784ca6c793528bbfc6b1294751f69315ad71dd350
SSDEEP

6144:8ZxtKPh8cxMM4K9eRGfPrzipX7pPWwGM4vIeWCeq656yPe4nhyW7b7VKtrLPA:8zCXaM4K9icr8dPI6eMq65XPzn0WstPA

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

tcxerr.duckdns.org:8776

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1412-4-0x0000000000400000-0x0000000000418000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4388	powershell.exe
2604	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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4388	powershell.exe
4388	powershell.exe
2604	powershell.exe
2604	powershell.exe
1412	regasm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	regasm.exe
Token: SeDebugPrivilege	4388	powershell.exe
Token: SeDebugPrivilege	2604	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1412	regasm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 1412	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	88
PID 2304 wrote to memory of 2764	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	89
PID 2304 wrote to memory of 2764	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	89
PID 2304 wrote to memory of 2764	2304	7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe	89
PID 1412 wrote to memory of 4388	1412	regasm.exe	97
PID 1412 wrote to memory of 4388	1412	regasm.exe	97
PID 1412 wrote to memory of 4388	1412	regasm.exe	97
PID 1412 wrote to memory of 2604	1412	regasm.exe	100
PID 1412 wrote to memory of 2604	1412	regasm.exe	100
PID 1412 wrote to memory of 2604	1412	regasm.exe	100

C:\Users\Admin\AppData\Local\Temp\7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe
"C:\Users\Admin\AppData\Local\Temp\7ab12eb457b9ea29a355cbad6743de0ebc7c041af2e1f811ff0560b8f74d3e01.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4388
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2604
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
3d57c7a727f23d9bbbac88fb822fd12b

SHA1
2e953b66d12ec78e4771ee22c05bf2f80dbfccdf

SHA256
1e3c20f85389b04913f6637a5b8c4a786fb1a65c5f35598612121e622384b39c

SHA512
95100ee2e31238516ebae28160e839a5312792badfc62a743ec765ae93e118ff69f4947b34ddaad0abbf3b2ceabd737f05f0b7a1a487f4edcc1b8c1d01c66b18

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wkf5bytp.ijc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1412-80-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/1412-76-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/1412-5-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/1412-6-0x0000000004CF0000-0x0000000004D8C000-memory.dmp

Filesize
624KB

Download
memory/1412-4-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1412-77-0x0000000005BB0000-0x0000000006154000-memory.dmp

Filesize
5.6MB

Download
memory/1412-79-0x0000000005A70000-0x0000000005A7A000-memory.dmp

Filesize
40KB

Download
memory/1412-78-0x0000000005A90000-0x0000000005B22000-memory.dmp

Filesize
584KB

Download
memory/1412-75-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/2304-0-0x00000168E15E0000-0x00000168E15EC000-memory.dmp

Filesize
48KB

Download
memory/2304-7-0x00007FFE22270000-0x00007FFE22D31000-memory.dmp

Filesize
10.8MB

Download
memory/2304-3-0x00000168E1980000-0x00000168E19EA000-memory.dmp

Filesize
424KB

Download
memory/2304-2-0x00007FFE22270000-0x00007FFE22D31000-memory.dmp

Filesize
10.8MB

Download
memory/2304-1-0x00007FFE22273000-0x00007FFE22275000-memory.dmp

Filesize
8KB

Download
memory/2604-64-0x000000006FB10000-0x000000006FB5C000-memory.dmp

Filesize
304KB

Download
memory/4388-28-0x0000000006050000-0x0000000006082000-memory.dmp

Filesize
200KB

Download
memory/4388-48-0x00000000070F0000-0x000000000710A000-memory.dmp

Filesize
104KB

Download
memory/4388-26-0x0000000005A80000-0x0000000005A9E000-memory.dmp

Filesize
120KB

Download
memory/4388-29-0x000000006FB10000-0x000000006FB5C000-memory.dmp

Filesize
304KB

Download
memory/4388-39-0x0000000006C40000-0x0000000006C5E000-memory.dmp

Filesize
120KB

Download
memory/4388-40-0x0000000006C70000-0x0000000006D13000-memory.dmp

Filesize
652KB

Download
memory/4388-41-0x00000000073E0000-0x0000000007A5A000-memory.dmp

Filesize
6.5MB

Download
memory/4388-42-0x0000000006DA0000-0x0000000006DBA000-memory.dmp

Filesize
104KB

Download
memory/4388-43-0x0000000006E00000-0x0000000006E0A000-memory.dmp

Filesize
40KB

Download
memory/4388-44-0x0000000007030000-0x00000000070C6000-memory.dmp

Filesize
600KB

Download
memory/4388-45-0x0000000006FA0000-0x0000000006FB1000-memory.dmp

Filesize
68KB

Download
memory/4388-46-0x0000000006FD0000-0x0000000006FDE000-memory.dmp

Filesize
56KB

Download
memory/4388-47-0x0000000006FE0000-0x0000000006FF4000-memory.dmp

Filesize
80KB

Download
memory/4388-27-0x0000000005AB0000-0x0000000005AFC000-memory.dmp

Filesize
304KB

Download
memory/4388-49-0x0000000007020000-0x0000000007028000-memory.dmp

Filesize
32KB

Download
memory/4388-52-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4388-25-0x0000000005490000-0x00000000057E4000-memory.dmp

Filesize
3.3MB

Download
memory/4388-15-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4388-14-0x0000000005420000-0x0000000005486000-memory.dmp

Filesize
408KB

Download
memory/4388-12-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4388-13-0x00000000053B0000-0x0000000005416000-memory.dmp

Filesize
408KB

Download
memory/4388-11-0x0000000004BC0000-0x0000000004BE2000-memory.dmp

Filesize
136KB

Download
memory/4388-10-0x0000000074560000-0x0000000074D10000-memory.dmp

Filesize
7.7MB

Download
memory/4388-9-0x0000000004D80000-0x00000000053A8000-memory.dmp

Filesize
6.2MB

Download
memory/4388-8-0x0000000000900000-0x0000000000936000-memory.dmp

Filesize
216KB

Download