xworm | 2a5b3f3025225f3813f33d2f9155de9452ce8bfd93a83b6fd6f3caaff4d230cb

Analysis

max time kernel
1797s
max time network
1592s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
25/08/2024, 08:41

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General

Target

123.exe
Size

200KB
MD5

ac95817b187d1a14c1810c6d2ab15be0
SHA1

cb4f025c574958b0a9b38f572e431b5a15dfc3bd
SHA256

2a5b3f3025225f3813f33d2f9155de9452ce8bfd93a83b6fd6f3caaff4d230cb
SHA512

871e8df2faf16fd46e28edcc2a79e064c36d6649f0727659846c13ed3a13013e079ae29f95a3416ccf4f07613df83b005d3c013e025d2d43d7fc5d88c7384e1f
SSDEEP

3072:kvlNPJhQyFb5IO/EcsjsgbcUieNJZKoPC5+Le:kvvQwbarwK3ZKoa

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4228-1-0x0000000000030000-0x0000000000068000-memory.dmp	family_xworm
behavioral1/files/0x000d00000001ab1b-187.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
3552	powershell.exe
3180	powershell.exe
864	powershell.exe
2236	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hosts.lnk	123.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hosts.lnk	123.exe

Executes dropped EXE 30 IoCs

pid	Process
3756	hosts
428	hosts
4852	hosts
2640	hosts
3736	hosts
2440	hosts
4068	hosts
3084	hosts
2612	hosts
2460	hosts
4000	hosts
5004	hosts
192	hosts
4696	hosts
4412	hosts
1888	hosts
5100	hosts
4984	hosts
1560	hosts
5000	hosts
1668	hosts
4468	hosts
4368	hosts
4388	hosts
2688	hosts
4988	hosts
2924	hosts
1404	hosts
4492	hosts
612	hosts

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-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\hosts = "C:\\Users\\Admin\\hosts"	123.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

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
1992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
3552	powershell.exe
3552	powershell.exe
3552	powershell.exe
3180	powershell.exe
3180	powershell.exe
3180	powershell.exe
864	powershell.exe
864	powershell.exe
864	powershell.exe
2236	powershell.exe
2236	powershell.exe
2236	powershell.exe
4228	123.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4228	123.exe
Token: SeDebugPrivilege	3552	powershell.exe
Token: SeIncreaseQuotaPrivilege	3552	powershell.exe
Token: SeSecurityPrivilege	3552	powershell.exe
Token: SeTakeOwnershipPrivilege	3552	powershell.exe
Token: SeLoadDriverPrivilege	3552	powershell.exe
Token: SeSystemProfilePrivilege	3552	powershell.exe
Token: SeSystemtimePrivilege	3552	powershell.exe
Token: SeProfSingleProcessPrivilege	3552	powershell.exe
Token: SeIncBasePriorityPrivilege	3552	powershell.exe
Token: SeCreatePagefilePrivilege	3552	powershell.exe
Token: SeBackupPrivilege	3552	powershell.exe
Token: SeRestorePrivilege	3552	powershell.exe
Token: SeShutdownPrivilege	3552	powershell.exe
Token: SeDebugPrivilege	3552	powershell.exe
Token: SeSystemEnvironmentPrivilege	3552	powershell.exe
Token: SeRemoteShutdownPrivilege	3552	powershell.exe
Token: SeUndockPrivilege	3552	powershell.exe
Token: SeManageVolumePrivilege	3552	powershell.exe
Token: 33	3552	powershell.exe
Token: 34	3552	powershell.exe
Token: 35	3552	powershell.exe
Token: 36	3552	powershell.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeIncreaseQuotaPrivilege	3180	powershell.exe
Token: SeSecurityPrivilege	3180	powershell.exe
Token: SeTakeOwnershipPrivilege	3180	powershell.exe
Token: SeLoadDriverPrivilege	3180	powershell.exe
Token: SeSystemProfilePrivilege	3180	powershell.exe
Token: SeSystemtimePrivilege	3180	powershell.exe
Token: SeProfSingleProcessPrivilege	3180	powershell.exe
Token: SeIncBasePriorityPrivilege	3180	powershell.exe
Token: SeCreatePagefilePrivilege	3180	powershell.exe
Token: SeBackupPrivilege	3180	powershell.exe
Token: SeRestorePrivilege	3180	powershell.exe
Token: SeShutdownPrivilege	3180	powershell.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeSystemEnvironmentPrivilege	3180	powershell.exe
Token: SeRemoteShutdownPrivilege	3180	powershell.exe
Token: SeUndockPrivilege	3180	powershell.exe
Token: SeManageVolumePrivilege	3180	powershell.exe
Token: 33	3180	powershell.exe
Token: 34	3180	powershell.exe
Token: 35	3180	powershell.exe
Token: 36	3180	powershell.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeIncreaseQuotaPrivilege	864	powershell.exe
Token: SeSecurityPrivilege	864	powershell.exe
Token: SeTakeOwnershipPrivilege	864	powershell.exe
Token: SeLoadDriverPrivilege	864	powershell.exe
Token: SeSystemProfilePrivilege	864	powershell.exe
Token: SeSystemtimePrivilege	864	powershell.exe
Token: SeProfSingleProcessPrivilege	864	powershell.exe
Token: SeIncBasePriorityPrivilege	864	powershell.exe
Token: SeCreatePagefilePrivilege	864	powershell.exe
Token: SeBackupPrivilege	864	powershell.exe
Token: SeRestorePrivilege	864	powershell.exe
Token: SeShutdownPrivilege	864	powershell.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeSystemEnvironmentPrivilege	864	powershell.exe
Token: SeRemoteShutdownPrivilege	864	powershell.exe
Token: SeUndockPrivilege	864	powershell.exe
Token: SeManageVolumePrivilege	864	powershell.exe
Token: 33	864	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4228	123.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 3552	4228	123.exe	74
PID 4228 wrote to memory of 3552	4228	123.exe	74
PID 4228 wrote to memory of 3180	4228	123.exe	77
PID 4228 wrote to memory of 3180	4228	123.exe	77
PID 4228 wrote to memory of 864	4228	123.exe	79
PID 4228 wrote to memory of 864	4228	123.exe	79
PID 4228 wrote to memory of 2236	4228	123.exe	81
PID 4228 wrote to memory of 2236	4228	123.exe	81
PID 4228 wrote to memory of 1992	4228	123.exe	83
PID 4228 wrote to memory of 1992	4228	123.exe	83

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\123.exe
"C:\Users\Admin\AppData\Local\Temp\123.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228
- 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\123.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3552
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '123.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3180
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\hosts'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:864
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'hosts'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2236
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "hosts" /tr "C:\Users\Admin\hosts"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1992

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:3756

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:428

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4852

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2640

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:3736

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2440

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4068

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:3084

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2612

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2460

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4000

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:5004

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:192

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4696

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4412

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:1888

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:5100

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4984

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:1560

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:5000

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:1668

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4468

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4368

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4388

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2688

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4988

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:2924

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:1404

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:4492

C:\Users\Admin\hosts
C:\Users\Admin\hosts
1⤵
- Executes dropped EXE
PID:612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\hosts.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
f421af9f40332239d438d7424830ef29

SHA1
151d9f192b8aee8cadae79ae04950043835dcf68

SHA256
ceec5543cb29c9d84070b25b2a3c57b0ed0e0c0c3163193715559dba772e0217

SHA512
5ccb6db8bda06f908f1b0174cb90c9f80460dc30b98c46e7e5d74934b990585fa44e63c08aeea5cf42408377f4f84ec68c0f20db7e141da2e295f3ab4f96adfc

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

Filesize
1KB

MD5
c4f065894394414c177c944440c23f2b

SHA1
002ed1635f6844fc9eb1b05ff28d029446dcd0f8

SHA256
33df169e46187e5f2a056213226368dabfbf760653115cf0481479f0cdb86c93

SHA512
7ff6532bc312038100b4a29771aadbde5e078b761e6eac4ee7abc20868efbbdf96de83e0572384904f851a69bcb40b2172426d547578475f3169ba8d42f19f7c

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

Filesize
1KB

MD5
5ac9a335ef68d9d42d83eff54e3e4b94

SHA1
755dc7dda7e31f7c81b7e26d6a6b4517574749c0

SHA256
882df92b054ffaecb9d7ef7c5df9297b5f43288f543cd393ff2c0947da295021

SHA512
43ab2ee96c1cb58248d5c88274236a5c427eb6fa754d362414c833e5863808ddbf5378cb1bfcd24fcc1715dcc7b489d90d43fcfd6a202eb2bd96130a48e2b050

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jgpwkp4f.ssb.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\hosts

Filesize
200KB

MD5
ac95817b187d1a14c1810c6d2ab15be0

SHA1
cb4f025c574958b0a9b38f572e431b5a15dfc3bd

SHA256
2a5b3f3025225f3813f33d2f9155de9452ce8bfd93a83b6fd6f3caaff4d230cb

SHA512
871e8df2faf16fd46e28edcc2a79e064c36d6649f0727659846c13ed3a13013e079ae29f95a3416ccf4f07613df83b005d3c013e025d2d43d7fc5d88c7384e1f

Download Submit
memory/3552-10-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/3552-13-0x0000020F314A0000-0x0000020F31516000-memory.dmp

Filesize
472KB

Download
memory/3552-51-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/3552-8-0x0000020F312F0000-0x0000020F31312000-memory.dmp

Filesize
136KB

Download
memory/3552-9-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/3552-7-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/4228-0-0x00007FF88B793000-0x00007FF88B794000-memory.dmp

Filesize
4KB

Download
memory/4228-2-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/4228-158-0x00007FF88B793000-0x00007FF88B794000-memory.dmp

Filesize
4KB

Download
memory/4228-186-0x00007FF88B790000-0x00007FF88C17C000-memory.dmp

Filesize
9.9MB

Download
memory/4228-1-0x0000000000030000-0x0000000000068000-memory.dmp

Filesize
224KB

Download