xworm | a2e9485cb6b0018d079a1956dc8a073393c75ee0eca1ebed1fcdaff21b076d2e

Analysis

max time kernel
373s
max time network
374s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
30-06-2024 06:24

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General

Target

XClient.exe
Size

61KB
MD5

d537ba1b5dfd28d617d98452caadf449
SHA1

6cb1d669d2a10153e42ac33c7bd2fc8521ec7065
SHA256

a2e9485cb6b0018d079a1956dc8a073393c75ee0eca1ebed1fcdaff21b076d2e
SHA512

b0032aba438a0e8704ba6bb7f14e329464a4b09b3d4e6d8dc3ce96a8e70a21312faa407dddf092753234928e3de263a242ec45108f5a48a7d4f04695a9fcde2c
SSDEEP

1536:QrgMsFzvH+u9GeCdg/vzb2xsK/WS6zAEzO5sK:QrD8vHFSWzb26FAEzO5sK

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Ironthing-22901.portmap.host:22901

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/408-0-0x0000000000B50000-0x0000000000B66000-memory.dmp family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe 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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

1108 powershell.exe
516 powershell.exe
2064 powershell.exe
3636 powershell.exe

resource	yara_rule
behavioral1/memory/408-0-0x0000000000B50000-0x0000000000B66000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm

pid	process
1108	powershell.exe
516	powershell.exe
2064	powershell.exe
3636	powershell.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe

Executes dropped EXE 6 IoCs

Processes:

XClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exe

pid process

3152 XClient.exe
4404 XClient.exe
2196 XClient.exe
5108 XClient.exe
3616 XClient.exe
3504 XClient.exe

pid	process
3152	XClient.exe
4404	XClient.exe
2196	XClient.exe
5108	XClient.exe
3616	XClient.exe
3504	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

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"	XClient.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.

Processes:

flow ioc

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

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

4264 schtasks.exe

flow	ioc
1	ip-api.com

pid	process
4264	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
2064	powershell.exe
2064	powershell.exe
2064	powershell.exe
3636	powershell.exe
3636	powershell.exe
3636	powershell.exe
1108	powershell.exe
1108	powershell.exe
1108	powershell.exe
516	powershell.exe
516	powershell.exe
516	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	408	XClient.exe
Token: SeDebugPrivilege	2064	powershell.exe
Token: SeIncreaseQuotaPrivilege	2064	powershell.exe
Token: SeSecurityPrivilege	2064	powershell.exe
Token: SeTakeOwnershipPrivilege	2064	powershell.exe
Token: SeLoadDriverPrivilege	2064	powershell.exe
Token: SeSystemProfilePrivilege	2064	powershell.exe
Token: SeSystemtimePrivilege	2064	powershell.exe
Token: SeProfSingleProcessPrivilege	2064	powershell.exe
Token: SeIncBasePriorityPrivilege	2064	powershell.exe
Token: SeCreatePagefilePrivilege	2064	powershell.exe
Token: SeBackupPrivilege	2064	powershell.exe
Token: SeRestorePrivilege	2064	powershell.exe
Token: SeShutdownPrivilege	2064	powershell.exe
Token: SeDebugPrivilege	2064	powershell.exe
Token: SeSystemEnvironmentPrivilege	2064	powershell.exe
Token: SeRemoteShutdownPrivilege	2064	powershell.exe
Token: SeUndockPrivilege	2064	powershell.exe
Token: SeManageVolumePrivilege	2064	powershell.exe
Token: 33	2064	powershell.exe
Token: 34	2064	powershell.exe
Token: 35	2064	powershell.exe
Token: 36	2064	powershell.exe
Token: SeDebugPrivilege	3636	powershell.exe
Token: SeIncreaseQuotaPrivilege	3636	powershell.exe
Token: SeSecurityPrivilege	3636	powershell.exe
Token: SeTakeOwnershipPrivilege	3636	powershell.exe
Token: SeLoadDriverPrivilege	3636	powershell.exe
Token: SeSystemProfilePrivilege	3636	powershell.exe
Token: SeSystemtimePrivilege	3636	powershell.exe
Token: SeProfSingleProcessPrivilege	3636	powershell.exe
Token: SeIncBasePriorityPrivilege	3636	powershell.exe
Token: SeCreatePagefilePrivilege	3636	powershell.exe
Token: SeBackupPrivilege	3636	powershell.exe
Token: SeRestorePrivilege	3636	powershell.exe
Token: SeShutdownPrivilege	3636	powershell.exe
Token: SeDebugPrivilege	3636	powershell.exe
Token: SeSystemEnvironmentPrivilege	3636	powershell.exe
Token: SeRemoteShutdownPrivilege	3636	powershell.exe
Token: SeUndockPrivilege	3636	powershell.exe
Token: SeManageVolumePrivilege	3636	powershell.exe
Token: 33	3636	powershell.exe
Token: 34	3636	powershell.exe
Token: 35	3636	powershell.exe
Token: 36	3636	powershell.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeIncreaseQuotaPrivilege	1108	powershell.exe
Token: SeSecurityPrivilege	1108	powershell.exe
Token: SeTakeOwnershipPrivilege	1108	powershell.exe
Token: SeLoadDriverPrivilege	1108	powershell.exe
Token: SeSystemProfilePrivilege	1108	powershell.exe
Token: SeSystemtimePrivilege	1108	powershell.exe
Token: SeProfSingleProcessPrivilege	1108	powershell.exe
Token: SeIncBasePriorityPrivilege	1108	powershell.exe
Token: SeCreatePagefilePrivilege	1108	powershell.exe
Token: SeBackupPrivilege	1108	powershell.exe
Token: SeRestorePrivilege	1108	powershell.exe
Token: SeShutdownPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeSystemEnvironmentPrivilege	1108	powershell.exe
Token: SeRemoteShutdownPrivilege	1108	powershell.exe
Token: SeUndockPrivilege	1108	powershell.exe
Token: SeManageVolumePrivilege	1108	powershell.exe
Token: 33	1108	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 408 wrote to memory of 2064	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 2064	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 3636	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 3636	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 1108	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 1108	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 516	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 516	408	XClient.exe	powershell.exe
PID 408 wrote to memory of 4264	408	XClient.exe	schtasks.exe
PID 408 wrote to memory of 4264	408	XClient.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:408

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\XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2064

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
- Suspicious use of AdjustPrivilegeToken
PID:3636

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:1108

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:516

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4264

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:3152

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:4404

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:2196

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:5108

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:3616

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
PID:3504

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log
Filesize
654B

MD5
16c5fce5f7230eea11598ec11ed42862

SHA1
75392d4824706090f5e8907eee1059349c927600

SHA256
87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

SHA512
153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

Download Submit
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
2648a07ed826248d7d88c524cf25e16e

SHA1
098bb44a21f77420d9571ebb9c6e49b13dcea72d

SHA256
7f1e5d715cb56fa1c78ddf435e515d38bee665c2bd1471203fed12d0e8946721

SHA512
fd1434a482a7316b215c8f5307f6434a7087287a60800602610f54d848ee96a63109b8dd3a89cf1429234debc4f68a4b00bfe2502ec3aae31e2041c94656c5fc

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
29db3bb4ae7cabf5329ed8e73c52b6ab

SHA1
9dd9fccec354a892d48610be38f61ff8be224a42

SHA256
0ac6e06264ad35540bd337830f5ec5b8ae7f0f0964dc497601415a768589719e

SHA512
4510595b5f630924f301b6bd615f132389b2da2478e2b3c90c4a8d2315f28c56bf3ba16bf7ba850398f100e22f3729bb635b29f67f465af3a77840878111f67e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
80f02464bc7bdbb5cf8e7db7f346e587

SHA1
527ee84bb646efcfe2b5b655ad76eb4b9806cf62

SHA256
ff097e85a47d9a7b38b5dbf65537bd63b96e2f4f921a78f971d3eb44ce9f766b

SHA512
3f2824704297bb4d75e6422ef07dd49e6ec58f9a6859f420104c8c81794aacfc2858de1840374cf91ad775acee11ef287ccc7eed71b0148a0e129757d5bbbb9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_epc0imx2.oa1.ps1
Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
61KB

MD5
d537ba1b5dfd28d617d98452caadf449

SHA1
6cb1d669d2a10153e42ac33c7bd2fc8521ec7065

SHA256
a2e9485cb6b0018d079a1956dc8a073393c75ee0eca1ebed1fcdaff21b076d2e

SHA512
b0032aba438a0e8704ba6bb7f14e329464a4b09b3d4e6d8dc3ce96a8e70a21312faa407dddf092753234928e3de263a242ec45108f5a48a7d4f04695a9fcde2c

Download Submit
memory/408-0-0x0000000000B50000-0x0000000000B66000-memory.dmp

Filesize
88KB

Download
memory/408-2-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download
memory/408-186-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download
memory/408-1-0x00007FFAA4D43000-0x00007FFAA4D44000-memory.dmp

Filesize
4KB

Download
memory/2064-10-0x0000028EE6BB0000-0x0000028EE6BD2000-memory.dmp

Filesize
136KB

Download
memory/2064-13-0x0000028EE6D60000-0x0000028EE6DD6000-memory.dmp

Filesize
472KB

Download
memory/2064-51-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download
memory/2064-9-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download
memory/2064-8-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download
memory/2064-7-0x00007FFAA4D40000-0x00007FFAA572C000-memory.dmp

Filesize
9.9MB

Download