xworm | b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2

Analysis

max time kernel
113s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-11-2024 05:02

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General

Target

b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe
Size

831KB
MD5

7c34b697269a715d224025fce3300fb0
SHA1

429056652fdaef40ad87c8a58df36db93fb58cfd
SHA256

b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2
SHA512

6f6a6b23fa8779610c75eac5944e54586eeeadc4891cf3e5454c870c8aa865165a5e991b8973b01a88415ed2b6ca09ae787d2c62472c811a970754f05763b6ae
SSDEEP

768:o4JmoODtZ6xC8qSDQCcZnVJ9QhEHz0uEXOT:o4JmtOfqS0CiD9QhEHz0tk

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

procedure.kro.kr:5155

Mutex

Ll3GZBodOrXAw0Lx

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4452-8-0x0000000005120000-0x0000000005130000-memory.dmp	family_xworm

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

pid	Process
532	powershell.exe
1512	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dxdiag.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe
532	powershell.exe
532	powershell.exe
1512	powershell.exe
1512	powershell.exe
4452	dxdiag.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe
Token: SeDebugPrivilege	4452	dxdiag.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4452	dxdiag.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3836 wrote to memory of 4452	3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe	99
PID 3836 wrote to memory of 4452	3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe	99
PID 3836 wrote to memory of 4452	3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe	99
PID 3836 wrote to memory of 4452	3836	b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe	99
PID 4452 wrote to memory of 532	4452	dxdiag.exe	103
PID 4452 wrote to memory of 532	4452	dxdiag.exe	103
PID 4452 wrote to memory of 532	4452	dxdiag.exe	103
PID 4452 wrote to memory of 1512	4452	dxdiag.exe	105
PID 4452 wrote to memory of 1512	4452	dxdiag.exe	105
PID 4452 wrote to memory of 1512	4452	dxdiag.exe	105

C:\Users\Admin\AppData\Local\Temp\b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe
"C:\Users\Admin\AppData\Local\Temp\b8c74b1b222c4e1a54c8154e3fdbd30ffd6a93cae1b61a6855b7e31f508187f2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3836
- C:\Windows\SysWOW64\dxdiag.exe
  "C:\Windows\System32\dxdiag.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\SysWOW64\dxdiag.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:532
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dxdiag.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
77fa34bbfe6ac0ae242e7e9c3d4f66c1

SHA1
b71765802b77c9e6542241e93a518a8941333023

SHA256
c7034d909f266760bb2b2138e273bf40f1fc3d08924bddac86b6f7090dcdf271

SHA512
51252640238cd5f9939452493a1ad069a1ff4606b31812402437d6a2a8c8663415fd9b76ef24ed81b464e4dab7a311d7f5721c8321372e31f01245a88d3c80c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ndmldyps.vun.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/532-16-0x0000000005500000-0x0000000005B28000-memory.dmp

Filesize
6.2MB

Download
memory/532-50-0x0000000007770000-0x0000000007781000-memory.dmp

Filesize
68KB

Download
memory/532-17-0x0000000005160000-0x0000000005182000-memory.dmp

Filesize
136KB

Download
memory/532-18-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/532-49-0x0000000007800000-0x0000000007896000-memory.dmp

Filesize
600KB

Download
memory/532-48-0x00000000075D0000-0x00000000075DA000-memory.dmp

Filesize
40KB

Download
memory/532-57-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/532-54-0x00000000077F0000-0x00000000077F8000-memory.dmp

Filesize
32KB

Download
memory/532-53-0x00000000078C0000-0x00000000078DA000-memory.dmp

Filesize
104KB

Download
memory/532-47-0x0000000007570000-0x000000000758A000-memory.dmp

Filesize
104KB

Download
memory/532-13-0x0000000002960000-0x0000000002996000-memory.dmp

Filesize
216KB

Download
memory/532-14-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/532-15-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/532-51-0x00000000077A0000-0x00000000077AE000-memory.dmp

Filesize
56KB

Download
memory/532-46-0x0000000007BB0000-0x000000000822A000-memory.dmp

Filesize
6.5MB

Download
memory/532-19-0x00000000053F0000-0x0000000005456000-memory.dmp

Filesize
408KB

Download
memory/532-45-0x0000000007240000-0x00000000072E3000-memory.dmp

Filesize
652KB

Download
memory/532-44-0x0000000006820000-0x000000000683E000-memory.dmp

Filesize
120KB

Download
memory/532-29-0x0000000005D30000-0x0000000006084000-memory.dmp

Filesize
3.3MB

Download
memory/532-30-0x0000000006240000-0x000000000625E000-memory.dmp

Filesize
120KB

Download
memory/532-31-0x0000000006290000-0x00000000062DC000-memory.dmp

Filesize
304KB

Download
memory/532-52-0x00000000077B0000-0x00000000077C4000-memory.dmp

Filesize
80KB

Download
memory/532-33-0x0000000007200000-0x0000000007232000-memory.dmp

Filesize
200KB

Download
memory/532-34-0x000000006F560000-0x000000006F5AC000-memory.dmp

Filesize
304KB

Download
memory/1512-70-0x000000006F560000-0x000000006F5AC000-memory.dmp

Filesize
304KB

Download
memory/1512-59-0x0000000006030000-0x0000000006384000-memory.dmp

Filesize
3.3MB

Download
memory/3836-1-0x0000000000140000-0x0000000000214000-memory.dmp

Filesize
848KB

Download
memory/3836-3-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/3836-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/3836-2-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/3836-6-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-12-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-32-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-11-0x0000000005240000-0x00000000052DC000-memory.dmp

Filesize
624KB

Download
memory/4452-10-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-9-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-8-0x0000000005120000-0x0000000005130000-memory.dmp

Filesize
64KB

Download
memory/4452-7-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-5-0x0000000000CD0000-0x0000000000CE1000-memory.dmp

Filesize
68KB

Download
memory/4452-4-0x0000000000CD0000-0x0000000000CE1000-memory.dmp

Filesize
68KB

Download
memory/4452-81-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4452-82-0x0000000005C10000-0x00000000061B4000-memory.dmp

Filesize
5.6MB

Download
memory/4452-83-0x0000000005970000-0x0000000005A02000-memory.dmp

Filesize
584KB

Download
memory/4452-84-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/4452-85-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download