xworm | 751fdf0d29d347f8454a19ae33f50c5904c6a4033cb2be0fd1772b55a0860655

Analysis

max time kernel
142s
max time network
147s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
27-03-2024 22:20

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General

Target

XClient.exe
Size

172KB
MD5

e2b11b7d99f97bc6eab303a220d23a7f
SHA1

f9c57bcb12309522470ecb4b99e6a082d0093a07
SHA256

751fdf0d29d347f8454a19ae33f50c5904c6a4033cb2be0fd1772b55a0860655
SHA512

449ad8b26c1194d701c01b48307d43eb89fdd7e8f42cf634325d637e0bd456ab1ff325aefdc9b60f17fdbe45541f562990d2251e6b119cf74ebad7864b01f957
SSDEEP

3072:JDgJrpZbm078BeyAOwK8MzFfe295liNgTddwY0JwsR4TbswYqkX5bEdGDOjESHhy:CBbF79yyoH95D

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:5050

character-acquisitions.gl.at.ply.gg:5050

Attributes

Install_directory
%Public%
install_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2312-0-0x0000000000380000-0x00000000003B0000-memory.dmp	family_xworm
behavioral1/files/0x000600000002a7c4-70.dat	family_xworm
behavioral1/files/0x000600000002a7c4-71.dat	family_xworm
behavioral1/files/0x000600000002a7c4-75.dat	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XClient.exe

Executes dropped EXE 2 IoCs

pid	Process
2460	System32
3656	System32

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-1-5-21-2567984660-2719943099-2683635618-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Public\\System32"	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.

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1004	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2312	XClient.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2260	powershell.exe
2260	powershell.exe
3436	powershell.exe
3436	powershell.exe
1620	powershell.exe
1620	powershell.exe
952	powershell.exe
952	powershell.exe
2312	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	XClient.exe
Token: SeDebugPrivilege	2260	powershell.exe
Token: SeDebugPrivilege	3436	powershell.exe
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeDebugPrivilege	952	powershell.exe
Token: SeDebugPrivilege	2312	XClient.exe
Token: SeDebugPrivilege	2460	System32
Token: SeDebugPrivilege	3656	System32

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2312	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2260	2312	XClient.exe	79
PID 2312 wrote to memory of 2260	2312	XClient.exe	79
PID 2312 wrote to memory of 3436	2312	XClient.exe	81
PID 2312 wrote to memory of 3436	2312	XClient.exe	81
PID 2312 wrote to memory of 1620	2312	XClient.exe	83
PID 2312 wrote to memory of 1620	2312	XClient.exe	83
PID 2312 wrote to memory of 952	2312	XClient.exe	85
PID 2312 wrote to memory of 952	2312	XClient.exe	85
PID 2312 wrote to memory of 1004	2312	XClient.exe	87
PID 2312 wrote to memory of 1004	2312	XClient.exe	87

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 behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2312
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2260
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\System32'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:952
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System32" /tr "C:\Users\Public\System32"
  2⤵
  - Creates scheduled task(s)
  PID:1004

C:\Users\Public\System32
C:\Users\Public\System32
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2460

C:\Users\Public\System32
C:\Users\Public\System32
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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\System32.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

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

Filesize
944B

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

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

Filesize
944B

MD5
aa6b748cd8f3e3c0e41549529b919e21

SHA1
5a4b9721f9fb5042f6ef7afd698d5ac5216a88bb

SHA256
d7d665a42f940443efb28eb231dfe1c4062394e71fba145d6eea9ec075b0f0e8

SHA512
361c523f49428a7e430279099e669a1a8af8764653f42e83105c0da3f8e8dd3be6c1719ea8c158d8f2e8425d74457147a4683190eb4a67019b9d02be44c13534

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nxcp1e2v.4pq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\System32

Filesize
4KB

MD5
8a9621a0646e17fd0265be86bc4d2112

SHA1
923f815138689c9885ea729cb650a56e7a12284d

SHA256
357924e473e4a895f643b3434a6b1bc4fd6f3c70aba58c008dc8d96d768aff75

SHA512
6302bd24c90c2e7927f5fe0329220edb168c0205f33725f453501225ad1d87d37413aa4ff2379421df4f37db4364419d66fad5dab58933c8ff0a828f7ddbf8f4

Download Submit
C:\Users\Public\System32

Filesize
172KB

MD5
e2b11b7d99f97bc6eab303a220d23a7f

SHA1
f9c57bcb12309522470ecb4b99e6a082d0093a07

SHA256
751fdf0d29d347f8454a19ae33f50c5904c6a4033cb2be0fd1772b55a0860655

SHA512
449ad8b26c1194d701c01b48307d43eb89fdd7e8f42cf634325d637e0bd456ab1ff325aefdc9b60f17fdbe45541f562990d2251e6b119cf74ebad7864b01f957

Download Submit
C:\Users\Public\System32

Filesize
37KB

MD5
4dd5ef750ff5dc0e7f5e513614dce54a

SHA1
1a5b8503e919aa5daf1ffc05961f6ded80981a74

SHA256
f2198e50f3e5e03cec21c9bd33c2b9bf4a80c161ab67c2e666e91e9712d74b1a

SHA512
9842fc6763f0306a11adac8b6727e79940d3f1dc7073baa1613f05615fe10ebd70fa16d0cb5da0af6c2b34be74b804ac6b9bfc4bff3b51efd1d7419c29cd280d

Download Submit
memory/952-65-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/952-62-0x0000026E4B0E0000-0x0000026E4B0F0000-memory.dmp

Filesize
64KB

Download
memory/952-61-0x0000026E4B0E0000-0x0000026E4B0F0000-memory.dmp

Filesize
64KB

Download
memory/952-56-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/952-63-0x0000026E4B0E0000-0x0000026E4B0F0000-memory.dmp

Filesize
64KB

Download
memory/1620-44-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/1620-45-0x0000029E12470000-0x0000029E12480000-memory.dmp

Filesize
64KB

Download
memory/1620-50-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/1620-46-0x0000029E12470000-0x0000029E12480000-memory.dmp

Filesize
64KB

Download
memory/2260-12-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/2260-8-0x000002BEAE160000-0x000002BEAE182000-memory.dmp

Filesize
136KB

Download
memory/2260-14-0x000002BEAE1A0000-0x000002BEAE1B0000-memory.dmp

Filesize
64KB

Download
memory/2260-13-0x000002BEAE1A0000-0x000002BEAE1B0000-memory.dmp

Filesize
64KB

Download
memory/2260-15-0x000002BEAE1A0000-0x000002BEAE1B0000-memory.dmp

Filesize
64KB

Download
memory/2260-18-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/2312-0-0x0000000000380000-0x00000000003B0000-memory.dmp

Filesize
192KB

Download
memory/2312-1-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/2312-2-0x000000001B110000-0x000000001B120000-memory.dmp

Filesize
64KB

Download
memory/2312-48-0x000000001B110000-0x000000001B120000-memory.dmp

Filesize
64KB

Download
memory/2312-40-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/2460-74-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/2460-72-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/3436-22-0x000002866AEB0000-0x000002866AEC0000-memory.dmp

Filesize
64KB

Download
memory/3436-32-0x000002866AEB0000-0x000002866AEC0000-memory.dmp

Filesize
64KB

Download
memory/3436-21-0x000002866AEB0000-0x000002866AEC0000-memory.dmp

Filesize
64KB

Download
memory/3436-34-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/3436-20-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/3656-77-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download
memory/3656-78-0x00007FFA96D90000-0x00007FFA97852000-memory.dmp

Filesize
10.8MB

Download