xworm | a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93

General

Target

services.exe
Size

77KB
MD5

4b28f21bcd14645f1666fccafd727f2e
SHA1

4245951f19e8928803b02f9a2a9ca87b0c8c35b9
SHA256

a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93
SHA512

c7a03d02db5c6b4fea1e826bfc6ca37f2575a3e2f92f69f6d9f43d2ce8633280eef6af9c928085a01642548ba9487cf2dd615ab063a5b0ced4533a9455127dd4
SSDEEP

1536:hdmm8BuGI4RJolY2ivEfb2ffsuwzpLR6IGoVOxcE:nbLivEfb2ffCzeoVOxZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

147.185.221.20:37760

Attributes

Install_directory
%AppData%
install_file
Service.exe

Extracted

Family

xworm

Version

3.1

C2

adult-purchased.gl.at.ply.gg:13795

Mutex

WAQMuWkdncL23W2E

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2736-0-0x0000000000820000-0x000000000083A000-memory.dmp	family_xworm
behavioral2/files/0x000b0000000233e2-70.dat	family_xworm
behavioral2/memory/2736-71-0x000000001D7E0000-0x000000001D7EE000-memory.dmp	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
2880	powershell.exe
3816	powershell.exe
1216	powershell.exe
1996	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	services.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2196	Service.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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Service = "C:\\Users\\Admin\\AppData\\Roaming\\Service.exe"	services.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
14	ip-api.com

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_DADY&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_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe

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

pid	Process
1544	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2736	services.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3816	powershell.exe
3816	powershell.exe
1216	powershell.exe
1216	powershell.exe
1996	powershell.exe
1996	powershell.exe
2880	powershell.exe
2880	powershell.exe
2736	services.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
2736	services.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	services.exe
Token: SeDebugPrivilege	3816	powershell.exe
Token: SeDebugPrivilege	1216	powershell.exe
Token: SeDebugPrivilege	1996	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeDebugPrivilege	2736	services.exe
Token: SeDebugPrivilege	4536	taskmgr.exe
Token: SeSystemProfilePrivilege	4536	taskmgr.exe
Token: SeCreateGlobalPrivilege	4536	taskmgr.exe
Token: SeDebugPrivilege	2196	Service.exe
Token: 33	4536	taskmgr.exe
Token: SeIncBasePriorityPrivilege	4536	taskmgr.exe

Suspicious use of FindShellTrayWindow 39 IoCs

pid	Process
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe

Suspicious use of SendNotifyMessage 38 IoCs

pid	Process
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe
4536	taskmgr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2736	services.exe
2736	services.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 3816	2736	services.exe	83
PID 2736 wrote to memory of 3816	2736	services.exe	83
PID 2736 wrote to memory of 1216	2736	services.exe	85
PID 2736 wrote to memory of 1216	2736	services.exe	85
PID 2736 wrote to memory of 1996	2736	services.exe	87
PID 2736 wrote to memory of 1996	2736	services.exe	87
PID 2736 wrote to memory of 2880	2736	services.exe	89
PID 2736 wrote to memory of 2880	2736	services.exe	89
PID 2736 wrote to memory of 1544	2736	services.exe	91
PID 2736 wrote to memory of 1544	2736	services.exe	91

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\services.exe
"C:\Users\Admin\AppData\Local\Temp\services.exe"
1⤵
- Checks computer location settings
- 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:2736
- 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\services.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3816
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'services.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1216
- 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\Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2880
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Service" /tr "C:\Users\Admin\AppData\Roaming\Service.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1544

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4536

C:\Users\Admin\AppData\Roaming\Service.exe
C:\Users\Admin\AppData\Roaming\Service.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

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
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
38a2262fb16df934106a14acb53aaeb0

SHA1
44995f3ecfeef1136485135b0818ae7b6a11fee3

SHA256
3f1f739bf5742b5962a330560d14b95ebdbdf8c4704e5852a4deddc01fce5dc1

SHA512
43dccc1860a4dc260f5aa0fa1fcb3723836a7459e69649ce6482c8f360a8a0b674f0e461d2f82f437104c13e1e96c2d7806d72016162361a440ac59ccd9090d4

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ahmzqovf.iu2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Service.lnk

Filesize
771B

MD5
4d9bc6afb5e075f159adeb7b05227a87

SHA1
0161061f5f92567d2368c881401ad523f7483c1f

SHA256
0a4484128540fc0904ef49f7c234221c809a3fb967f8ba4ab70a597f46a68d4b

SHA512
4c3d570e52b02f509d8fc28d245b6b16acffbd850c965f0f2ab78a3edf5b031e3208f0fc65aea4864843e0cffc4622e6c79dad8f40007441ad950f2f68e5b971

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

Filesize
77KB

MD5
4b28f21bcd14645f1666fccafd727f2e

SHA1
4245951f19e8928803b02f9a2a9ca87b0c8c35b9

SHA256
a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93

SHA512
c7a03d02db5c6b4fea1e826bfc6ca37f2575a3e2f92f69f6d9f43d2ce8633280eef6af9c928085a01642548ba9487cf2dd615ab063a5b0ced4533a9455127dd4

Download Submit
memory/2736-0-0x0000000000820000-0x000000000083A000-memory.dmp

Filesize
104KB

Download
memory/2736-74-0x00007FFEE9B43000-0x00007FFEE9B45000-memory.dmp

Filesize
8KB

Download
memory/2736-71-0x000000001D7E0000-0x000000001D7EE000-memory.dmp

Filesize
56KB

Download
memory/2736-1-0x00007FFEE9B43000-0x00007FFEE9B45000-memory.dmp

Filesize
8KB

Download
memory/3816-17-0x00007FFEE9B40000-0x00007FFEEA601000-memory.dmp

Filesize
10.8MB

Download
memory/3816-14-0x00007FFEE9B40000-0x00007FFEEA601000-memory.dmp

Filesize
10.8MB

Download
memory/3816-13-0x00007FFEE9B40000-0x00007FFEEA601000-memory.dmp

Filesize
10.8MB

Download
memory/3816-12-0x00007FFEE9B40000-0x00007FFEEA601000-memory.dmp

Filesize
10.8MB

Download
memory/3816-8-0x0000022AECC00000-0x0000022AECC22000-memory.dmp

Filesize
136KB

Download
memory/4536-56-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-66-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-65-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-64-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-63-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-62-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-67-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-68-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-57-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download
memory/4536-58-0x0000020587870000-0x0000020587871000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads