xworm | 2e40036d668ff96a553bde8c62dab4f7ac024256deaa2e68f1e19fe94a2f98f2

Analysis

max time kernel
76s
max time network
67s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
15-06-2024 20:58

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General

Target

setup loader.exe
Size

49KB
MD5

92bc0dad236bed95c0503c72049d7f7b
SHA1

f68dc458b17f797f06fca1b61f058caead9b3560
SHA256

2e40036d668ff96a553bde8c62dab4f7ac024256deaa2e68f1e19fe94a2f98f2
SHA512

95b3710e2e0f7fda6cede8fff283e0918b70cd1251fe24eb24cede0b5f8d59188c82d1575dcd60dfe2a1d2e504ae282e1f37329d223b8073048027e2745dd26f
SSDEEP

768:bShn8azMUFJHlxXmWMvJF5P49O/yt16gOMhV3IOYmn4P3UX8cO0:bavzMUFxzXmRFq94m6gOMbY64fUX8u

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:15560

7.tcp.eu.ngrok.io:15560

Mutex

ZukGNk9bpYNaevaf

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/380-1-0x0000000000950000-0x0000000000962000-memory.dmp	family_xworm
behavioral1/files/0x000900000001ac49-188.dat	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2288	powershell.exe
1628	powershell.exe
4584	powershell.exe
4132	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	setup loader.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	ip-api.com

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\rescache\_merged\1601268389\715946058.pri	taskmgr.exe
File created	C:\Windows\rescache\_merged\4183903823\2290032291.pri	taskmgr.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000_Classes\Local Settings	taskmgr.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2288	powershell.exe
2288	powershell.exe
2288	powershell.exe
1628	powershell.exe
1628	powershell.exe
5064	taskmgr.exe
5064	taskmgr.exe
1628	powershell.exe
5064	taskmgr.exe
4584	powershell.exe
4584	powershell.exe
4584	powershell.exe
4132	powershell.exe
4132	powershell.exe
5064	taskmgr.exe
4132	powershell.exe
5064	taskmgr.exe
380	setup loader.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	380	setup loader.exe
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeIncreaseQuotaPrivilege	2288	powershell.exe
Token: SeSecurityPrivilege	2288	powershell.exe
Token: SeTakeOwnershipPrivilege	2288	powershell.exe
Token: SeLoadDriverPrivilege	2288	powershell.exe
Token: SeSystemProfilePrivilege	2288	powershell.exe
Token: SeSystemtimePrivilege	2288	powershell.exe
Token: SeProfSingleProcessPrivilege	2288	powershell.exe
Token: SeIncBasePriorityPrivilege	2288	powershell.exe
Token: SeCreatePagefilePrivilege	2288	powershell.exe
Token: SeBackupPrivilege	2288	powershell.exe
Token: SeRestorePrivilege	2288	powershell.exe
Token: SeShutdownPrivilege	2288	powershell.exe
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeSystemEnvironmentPrivilege	2288	powershell.exe
Token: SeRemoteShutdownPrivilege	2288	powershell.exe
Token: SeUndockPrivilege	2288	powershell.exe
Token: SeManageVolumePrivilege	2288	powershell.exe
Token: 33	2288	powershell.exe
Token: 34	2288	powershell.exe
Token: 35	2288	powershell.exe
Token: 36	2288	powershell.exe
Token: SeDebugPrivilege	1628	powershell.exe
Token: SeDebugPrivilege	5064	taskmgr.exe
Token: SeSystemProfilePrivilege	5064	taskmgr.exe
Token: SeCreateGlobalPrivilege	5064	taskmgr.exe
Token: SeIncreaseQuotaPrivilege	1628	powershell.exe
Token: SeSecurityPrivilege	1628	powershell.exe
Token: SeTakeOwnershipPrivilege	1628	powershell.exe
Token: SeLoadDriverPrivilege	1628	powershell.exe
Token: SeSystemProfilePrivilege	1628	powershell.exe
Token: SeSystemtimePrivilege	1628	powershell.exe
Token: SeProfSingleProcessPrivilege	1628	powershell.exe
Token: SeIncBasePriorityPrivilege	1628	powershell.exe
Token: SeCreatePagefilePrivilege	1628	powershell.exe
Token: SeBackupPrivilege	1628	powershell.exe
Token: SeRestorePrivilege	1628	powershell.exe
Token: SeShutdownPrivilege	1628	powershell.exe
Token: SeDebugPrivilege	1628	powershell.exe
Token: SeSystemEnvironmentPrivilege	1628	powershell.exe
Token: SeRemoteShutdownPrivilege	1628	powershell.exe
Token: SeUndockPrivilege	1628	powershell.exe
Token: SeManageVolumePrivilege	1628	powershell.exe
Token: 33	1628	powershell.exe
Token: 34	1628	powershell.exe
Token: 35	1628	powershell.exe
Token: 36	1628	powershell.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeIncreaseQuotaPrivilege	4584	powershell.exe
Token: SeSecurityPrivilege	4584	powershell.exe
Token: SeTakeOwnershipPrivilege	4584	powershell.exe
Token: SeLoadDriverPrivilege	4584	powershell.exe
Token: SeSystemProfilePrivilege	4584	powershell.exe
Token: SeSystemtimePrivilege	4584	powershell.exe
Token: SeProfSingleProcessPrivilege	4584	powershell.exe
Token: SeIncBasePriorityPrivilege	4584	powershell.exe
Token: SeCreatePagefilePrivilege	4584	powershell.exe
Token: SeBackupPrivilege	4584	powershell.exe
Token: SeRestorePrivilege	4584	powershell.exe
Token: SeShutdownPrivilege	4584	powershell.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeSystemEnvironmentPrivilege	4584	powershell.exe
Token: SeRemoteShutdownPrivilege	4584	powershell.exe

Suspicious use of FindShellTrayWindow 38 IoCs

pid	Process
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe

Suspicious use of SendNotifyMessage 38 IoCs

pid	Process
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe
5064	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
380	setup loader.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 380 wrote to memory of 2288	380	setup loader.exe	74
PID 380 wrote to memory of 2288	380	setup loader.exe	74
PID 380 wrote to memory of 1628	380	setup loader.exe	77
PID 380 wrote to memory of 1628	380	setup loader.exe	77
PID 380 wrote to memory of 4584	380	setup loader.exe	80
PID 380 wrote to memory of 4584	380	setup loader.exe	80
PID 380 wrote to memory of 4132	380	setup loader.exe	82
PID 380 wrote to memory of 4132	380	setup loader.exe	82

C:\Users\Admin\AppData\Local\Temp\setup loader.exe
"C:\Users\Admin\AppData\Local\Temp\setup loader.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:380
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\setup loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2288
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'setup loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1628
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4584
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4132

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:5064

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

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
3KB

MD5
8592ba100a78835a6b94d5949e13dfc1

SHA1
63e901200ab9a57c7dd4c078d7f75dcd3b357020

SHA256
fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

SHA512
87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

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

Filesize
1KB

MD5
ac57d8d28a6ec4a3a647086456354e2e

SHA1
fcca558c54d9ac15846b236c87df8203be324b18

SHA256
f999bd0e95471b037173bf33201888eb0dfa920a528bd45cb183aeda6a6f70a8

SHA512
6a50f8f466c6173ed17f69bf1970135b44cad77601b24d3cef7a6aaa8d40d7c6a54aca0faadaa545de3e8cd19708e0b07188efe964db4723e3a6cca451f22dc2

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

Filesize
1KB

MD5
d4f2ec4aedfe3b39c4cf60eb2b4614b5

SHA1
f0936cc5bbd692e595e12b1c8af3656b634e59fa

SHA256
9491f612de062019ee7480b9c4ef561e5a1a21ec38a50e3da3242da4a9669c7b

SHA512
bcff0355d4001afa675b72fdbea960d330390a692bfb00bcf0932144cb802b5e7293745e978cdcc83a3ecf82baf7c9e04c835eb5705bcdf8463bd6dccddbd1f6

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

Filesize
1KB

MD5
27498612886ec7d2f14ea219b16a4e83

SHA1
62d68489b9cf3dae0b96921be8023bd22fc0ba3a

SHA256
9e4c452a04debfedc36166f2e4976f900a26c12a3364dfc9efadb856a9c02f1e

SHA512
ae3f7f780f14d3dc5eb274c3b2f037c895696dca4d3c1aa2f255a4dfb1abb5ef78dc3262da18755dd3ee16e536dce2a924cdb138f1b32b1eed5442134ae67682

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_poinn2g4.n41.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe

Filesize
49KB

MD5
92bc0dad236bed95c0503c72049d7f7b

SHA1
f68dc458b17f797f06fca1b61f058caead9b3560

SHA256
2e40036d668ff96a553bde8c62dab4f7ac024256deaa2e68f1e19fe94a2f98f2

SHA512
95b3710e2e0f7fda6cede8fff283e0918b70cd1251fe24eb24cede0b5f8d59188c82d1575dcd60dfe2a1d2e504ae282e1f37329d223b8073048027e2745dd26f

Download Submit
memory/380-0-0x00007FFD9A2E3000-0x00007FFD9A2E4000-memory.dmp

Filesize
4KB

Download
memory/380-2-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/380-1-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download
memory/380-189-0x00007FFD9A2E3000-0x00007FFD9A2E4000-memory.dmp

Filesize
4KB

Download
memory/380-190-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/2288-9-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/2288-10-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/2288-13-0x0000016342B60000-0x0000016342BD6000-memory.dmp

Filesize
472KB

Download
memory/2288-51-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/2288-7-0x00007FFD9A2E0000-0x00007FFD9ACCC000-memory.dmp

Filesize
9.9MB

Download
memory/2288-8-0x00000163429B0000-0x00000163429D2000-memory.dmp

Filesize
136KB

Download