xworm | 3a16591b64920fda9ac2651df05629cc2b18c02cd52150a90bcc760126f879fd

Analysis

max time kernel
60s
max time network
55s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
15-06-2024 05:39

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General

Target

Xkezr.exe
Size

4.4MB
MD5

ead806a16c4198d3a7d2a3363163a23c
SHA1

5aff3ab5c3e33c67da67939283146bb40d7de590
SHA256

3a16591b64920fda9ac2651df05629cc2b18c02cd52150a90bcc760126f879fd
SHA512

cc21ba173d3bcfb8cee2bdb974ed7977c7d296a1df62c8995dfb23fb0a95745b2c6dc6474e7c1bae5cea3508ab1456eb26ff3ce07abeb9ff315f6f3953da0276
SSDEEP

24576:E7tZaQDorp0bIwoITdpXsRQ87KaC68Z3V51l90bAsWE3ug7dDlgE8Yi+Svt/1F93:EB

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

Mc35OpRlVfHYgK3s

Attributes

install_file
USB.exe
pastebin_url
https://pastebin.com/raw/EiiXCJbn

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/860-4902-0x0000000000400000-0x0000000000412000-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

Processes:

powershell.exepowershell.exe

pid process

3432 powershell.exe
1312 powershell.exe

pid	process
3432	powershell.exe
1312	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Xkezr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2394516847-3409208829-2230326962-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ilvrcqkyi = "C:\\Users\\Admin\\AppData\\Roaming\\Ilvrcqkyi.exe"	Xkezr.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

1 pastebin.com
4 pastebin.com
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

Xkezr.exe

description pid process target process

PID 764 set thread context of 860 764 Xkezr.exe Xkezr.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Xkezr.exepowershell.exepowershell.exeXkezr.exe

pid process

764 Xkezr.exe
3432 powershell.exe
3432 powershell.exe
1312 powershell.exe
1312 powershell.exe
860 Xkezr.exe

flow	ioc
1	pastebin.com
4	pastebin.com

flow	ioc
1	ip-api.com

description	pid	process	target process
PID 764 set thread context of 860	764	Xkezr.exe	Xkezr.exe

pid	process
764	Xkezr.exe
3432	powershell.exe
3432	powershell.exe
1312	powershell.exe
1312	powershell.exe
860	Xkezr.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Xkezr.exeXkezr.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	764	Xkezr.exe
Token: SeDebugPrivilege	764	Xkezr.exe
Token: SeDebugPrivilege	860	Xkezr.exe
Token: SeDebugPrivilege	3432	powershell.exe
Token: SeDebugPrivilege	1312	powershell.exe
Token: SeDebugPrivilege	860	Xkezr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Xkezr.exe

pid process

860 Xkezr.exe

pid	process
860	Xkezr.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Xkezr.exeXkezr.exe

description	pid	process	target process
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 764 wrote to memory of 860	764	Xkezr.exe	Xkezr.exe
PID 860 wrote to memory of 3432	860	Xkezr.exe	powershell.exe
PID 860 wrote to memory of 3432	860	Xkezr.exe	powershell.exe
PID 860 wrote to memory of 3432	860	Xkezr.exe	powershell.exe
PID 860 wrote to memory of 1312	860	Xkezr.exe	powershell.exe
PID 860 wrote to memory of 1312	860	Xkezr.exe	powershell.exe
PID 860 wrote to memory of 1312	860	Xkezr.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Xkezr.exe
"C:\Users\Admin\AppData\Local\Temp\Xkezr.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:764

C:\Users\Admin\AppData\Local\Temp\Xkezr.exe
"C:\Users\Admin\AppData\Local\Temp\Xkezr.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:860

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Xkezr.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3432

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xkezr.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1312

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Xkezr.exe.log
Filesize
805B

MD5
9d0cacca373731660e8268a162d9d4ff

SHA1
a82111d00132cdf7ef46af5681601d55c6a0e17c

SHA256
95932f81206717ff86f0974ee37dc40d5d914f730f00a08344b4c1765d663394

SHA512
8c971ab501fc322b13f53b03325b2295e1eedb12b6d50a4225e6e3b4bf5128665b1a3d8b560a8b04f14bfa6f5cba41058e4f546139101fc303f3b8393f5ca485

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
099cf247a27e0c512c29225080270dc1

SHA1
ba96dd3c81e3c6293f04420ed355c5463844e464

SHA256
5a6acc6cda30fb0a1a5fbc30f6b6067452eaa579c50d053841bfa8cc8ec17f0b

SHA512
b140136d9d6cf7c7e01ec10edada82f5914a45513a42775617fa9a2bd2e7a3a7c73337b6d44337636239575962f685a8346ef3dd09dfc09cf6037be59297d944

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n2al2lox.ohd.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/764-28-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-36-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-2-0x00000000061E0000-0x0000000006400000-memory.dmp

Filesize
2.1MB

Download
memory/764-3-0x00000000069B0000-0x0000000006F56000-memory.dmp

Filesize
5.6MB

Download
memory/764-4-0x00000000064A0000-0x0000000006532000-memory.dmp

Filesize
584KB

Download
memory/764-5-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-20-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-48-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-60-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-68-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-66-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-64-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-63-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-58-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-56-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-54-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-52-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-50-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-46-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-42-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-44-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/764-34-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-32-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-30-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-26-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-22-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-18-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-16-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-14-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-12-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-10-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-8-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-6-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-40-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-38-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-24-0x00000000061E0000-0x00000000063FB000-memory.dmp

Filesize
2.1MB

Download
memory/764-1-0x0000000000080000-0x00000000004F0000-memory.dmp

Filesize
4.4MB

Download
memory/764-4891-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/764-4892-0x00000000065D0000-0x000000000662C000-memory.dmp

Filesize
368KB

Download
memory/764-4893-0x0000000006630000-0x000000000667C000-memory.dmp

Filesize
304KB

Download
memory/764-4894-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/764-4895-0x00000000066E0000-0x0000000006734000-memory.dmp

Filesize
336KB

Download
memory/764-4900-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/860-4969-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/860-4901-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/860-4903-0x0000000005C80000-0x0000000005D1C000-memory.dmp

Filesize
624KB

Download
memory/860-4904-0x0000000005D20000-0x0000000005D86000-memory.dmp

Filesize
408KB

Download
memory/860-4902-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/860-4905-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/860-4968-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/860-4967-0x00000000076C0000-0x00000000076CA000-memory.dmp

Filesize
40KB

Download
memory/1312-4957-0x00000000700E0000-0x000000007012C000-memory.dmp

Filesize
304KB

Download
memory/3432-4923-0x0000000007A20000-0x0000000007A54000-memory.dmp

Filesize
208KB

Download
memory/3432-4936-0x0000000007BC0000-0x0000000007BDA000-memory.dmp

Filesize
104KB

Download
memory/3432-4916-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/3432-4920-0x0000000006370000-0x00000000066C7000-memory.dmp

Filesize
3.3MB

Download
memory/3432-4921-0x0000000006860000-0x000000000687E000-memory.dmp

Filesize
120KB

Download
memory/3432-4922-0x00000000068A0000-0x00000000068EC000-memory.dmp

Filesize
304KB

Download
memory/3432-4910-0x0000000006290000-0x00000000062F6000-memory.dmp

Filesize
408KB

Download
memory/3432-4924-0x00000000700E0000-0x000000007012C000-memory.dmp

Filesize
304KB

Download
memory/3432-4933-0x0000000007A80000-0x0000000007A9E000-memory.dmp

Filesize
120KB

Download
memory/3432-4934-0x0000000007AA0000-0x0000000007B44000-memory.dmp

Filesize
656KB

Download
memory/3432-4935-0x0000000008200000-0x000000000887A000-memory.dmp

Filesize
6.5MB

Download
memory/3432-4909-0x00000000061F0000-0x0000000006212000-memory.dmp

Filesize
136KB

Download
memory/3432-4937-0x0000000007C30000-0x0000000007C3A000-memory.dmp

Filesize
40KB

Download
memory/3432-4938-0x0000000007E60000-0x0000000007EF6000-memory.dmp

Filesize
600KB

Download
memory/3432-4939-0x0000000007DD0000-0x0000000007DE1000-memory.dmp

Filesize
68KB

Download
memory/3432-4940-0x0000000007E00000-0x0000000007E0E000-memory.dmp

Filesize
56KB

Download
memory/3432-4941-0x0000000007E10000-0x0000000007E25000-memory.dmp

Filesize
84KB

Download
memory/3432-4907-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/3432-4908-0x0000000005A90000-0x00000000060BA000-memory.dmp

Filesize
6.2MB

Download
memory/3432-4906-0x0000000003070000-0x00000000030A6000-memory.dmp

Filesize
216KB

Download
memory/3432-4942-0x0000000007F20000-0x0000000007F3A000-memory.dmp

Filesize
104KB

Download
memory/3432-4943-0x0000000007F00000-0x0000000007F08000-memory.dmp

Filesize
32KB

Download
memory/3432-4946-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download