xworm | 90a1939a03a4c6a0cd4fa491f106e96597faf34110bc58e013f1604bad88d4a3

Analysis

max time kernel
928s
max time network
930s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09-05-2024 07:53

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General

Target

Client.exe
Size

327KB
MD5

abba6345ea0fb09de3cded81bec289ef
SHA1

5ddf3b0d56f3dbd742b6473ab22b58a74730a4e0
SHA256

90a1939a03a4c6a0cd4fa491f106e96597faf34110bc58e013f1604bad88d4a3
SHA512

8328b290d8d695e9a244bdbb782aafc48cf36f82c0cb3810c185d9c3468262e57dc30b249a5bf27d18e9db5ca97bd5a7a0081764ee7bfbabf621850c19624e4e
SSDEEP

6144:i1YD5ubbPMBX+GIIIIIIIhIIIIIIIIIIIIIIIU:15kPMBY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

region-vip.gl.at.ply.gg:47649

increased-ted.gl.at.ply.gg:47649

Attributes

Install_directory
%ProgramData%
install_file
Steam.exe
telegram
https://api.telegram.org/bot7186793142:AAGFJjLyhOIBEPcbCbAu3hrbmYsgQ5hzhf4/sendMessage?chat_id=5288662132

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3796-1-0x0000000000C90000-0x0000000000CE8000-memory.dmp	family_xworm
behavioral2/files/0x000d00000001ab6d-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
4976	powershell.exe
4232	powershell.exe
2920	powershell.exe
4008	powershell.exe

Executes dropped EXE 15 IoCs

pid	Process
192	Steam.exe
3376	Steam.exe
3568	Steam.exe
2152	Steam.exe
4364	Steam.exe
516	Steam.exe
3324	Steam.exe
408	Steam.exe
2868	Steam.exe
4796	Steam.exe
4232	Steam.exe
2368	Steam.exe
4528	Steam.exe
2544	Steam.exe
1824	Steam.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\Steam = "C:\\ProgramData\\Steam.exe"	Client.exe

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
5016	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4976	powershell.exe
4976	powershell.exe
4976	powershell.exe
4232	powershell.exe
4232	powershell.exe
4232	powershell.exe
2920	powershell.exe
2920	powershell.exe
2920	powershell.exe
4008	powershell.exe
4008	powershell.exe
4008	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3796	Client.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeIncreaseQuotaPrivilege	4976	powershell.exe
Token: SeSecurityPrivilege	4976	powershell.exe
Token: SeTakeOwnershipPrivilege	4976	powershell.exe
Token: SeLoadDriverPrivilege	4976	powershell.exe
Token: SeSystemProfilePrivilege	4976	powershell.exe
Token: SeSystemtimePrivilege	4976	powershell.exe
Token: SeProfSingleProcessPrivilege	4976	powershell.exe
Token: SeIncBasePriorityPrivilege	4976	powershell.exe
Token: SeCreatePagefilePrivilege	4976	powershell.exe
Token: SeBackupPrivilege	4976	powershell.exe
Token: SeRestorePrivilege	4976	powershell.exe
Token: SeShutdownPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeSystemEnvironmentPrivilege	4976	powershell.exe
Token: SeRemoteShutdownPrivilege	4976	powershell.exe
Token: SeUndockPrivilege	4976	powershell.exe
Token: SeManageVolumePrivilege	4976	powershell.exe
Token: 33	4976	powershell.exe
Token: 34	4976	powershell.exe
Token: 35	4976	powershell.exe
Token: 36	4976	powershell.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeIncreaseQuotaPrivilege	4232	powershell.exe
Token: SeSecurityPrivilege	4232	powershell.exe
Token: SeTakeOwnershipPrivilege	4232	powershell.exe
Token: SeLoadDriverPrivilege	4232	powershell.exe
Token: SeSystemProfilePrivilege	4232	powershell.exe
Token: SeSystemtimePrivilege	4232	powershell.exe
Token: SeProfSingleProcessPrivilege	4232	powershell.exe
Token: SeIncBasePriorityPrivilege	4232	powershell.exe
Token: SeCreatePagefilePrivilege	4232	powershell.exe
Token: SeBackupPrivilege	4232	powershell.exe
Token: SeRestorePrivilege	4232	powershell.exe
Token: SeShutdownPrivilege	4232	powershell.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeSystemEnvironmentPrivilege	4232	powershell.exe
Token: SeRemoteShutdownPrivilege	4232	powershell.exe
Token: SeUndockPrivilege	4232	powershell.exe
Token: SeManageVolumePrivilege	4232	powershell.exe
Token: 33	4232	powershell.exe
Token: 34	4232	powershell.exe
Token: 35	4232	powershell.exe
Token: 36	4232	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeIncreaseQuotaPrivilege	2920	powershell.exe
Token: SeSecurityPrivilege	2920	powershell.exe
Token: SeTakeOwnershipPrivilege	2920	powershell.exe
Token: SeLoadDriverPrivilege	2920	powershell.exe
Token: SeSystemProfilePrivilege	2920	powershell.exe
Token: SeSystemtimePrivilege	2920	powershell.exe
Token: SeProfSingleProcessPrivilege	2920	powershell.exe
Token: SeIncBasePriorityPrivilege	2920	powershell.exe
Token: SeCreatePagefilePrivilege	2920	powershell.exe
Token: SeBackupPrivilege	2920	powershell.exe
Token: SeRestorePrivilege	2920	powershell.exe
Token: SeShutdownPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeSystemEnvironmentPrivilege	2920	powershell.exe
Token: SeRemoteShutdownPrivilege	2920	powershell.exe
Token: SeUndockPrivilege	2920	powershell.exe
Token: SeManageVolumePrivilege	2920	powershell.exe
Token: 33	2920	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3796 wrote to memory of 4976	3796	Client.exe	74
PID 3796 wrote to memory of 4976	3796	Client.exe	74
PID 3796 wrote to memory of 4232	3796	Client.exe	77
PID 3796 wrote to memory of 4232	3796	Client.exe	77
PID 3796 wrote to memory of 2920	3796	Client.exe	79
PID 3796 wrote to memory of 2920	3796	Client.exe	79
PID 3796 wrote to memory of 4008	3796	Client.exe	81
PID 3796 wrote to memory of 4008	3796	Client.exe	81
PID 3796 wrote to memory of 5016	3796	Client.exe	83
PID 3796 wrote to memory of 5016	3796	Client.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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3796
- 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\Client.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Client.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4232
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Steam.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4008
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Steam" /tr "C:\ProgramData\Steam.exe"
  2⤵
  - Creates scheduled task(s)
  PID:5016

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:192

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:3376

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:3568

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:2152

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:4364

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:516

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:3324

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:408

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:2868

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:4796

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:4232

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:2368

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:4528

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:2544

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
PID:1824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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:\ProgramData\Steam.exe

Filesize
327KB

MD5
abba6345ea0fb09de3cded81bec289ef

SHA1
5ddf3b0d56f3dbd742b6473ab22b58a74730a4e0

SHA256
90a1939a03a4c6a0cd4fa491f106e96597faf34110bc58e013f1604bad88d4a3

SHA512
8328b290d8d695e9a244bdbb782aafc48cf36f82c0cb3810c185d9c3468262e57dc30b249a5bf27d18e9db5ca97bd5a7a0081764ee7bfbabf621850c19624e4e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Steam.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
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

Filesize
1KB

MD5
8f7103f5130079b1e361aec7c24b4bfc

SHA1
c5761123b8f9da1190169d19ef2061ccb7ab6fdb

SHA256
73c1891cdaa53c2ba3959f561148c8219ecca679d6a6253fcfff5568b08f833b

SHA512
181671d8574027ffac0b7eb81506a593e523fabea2ef0cf6000a0e7ff812f3c9329fa3b3e00e9a7ecc4fdba53b7e2195f2fe98e01906eb776b6b318d7d8231bc

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

Filesize
1KB

MD5
dd39d1c86b4d636a64c88254abcf12d0

SHA1
f8c32fe1466cebff1002db6d8f964bef41e43671

SHA256
cbb5f608c34379fa861df7e2c11c124f9dbc1a6145e80746c35e110c57d79a35

SHA512
5f207845fbbe1f0a5231ab1c52c2614883167b7a4a76ae1830251994607b423eef6863bb17adacb59e8a2ea17658a43c7f259729a713533ab7f0024885d00efd

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

Filesize
1KB

MD5
96dbcc652b68921444cf442f2d3c0fb3

SHA1
a9d51eafecf5badeb1eaeca3bc15165421520393

SHA256
6036f9efbb0ffa7af8000e0bd450008f7972657c087d724dad3ce68b56eb1fbc

SHA512
d62640b3ab5bcf6b9bbbdae2572e5c5b93a8f1e41b5df056deb93185e7a3a9bd94d740c75532b002d50f5db4709afb1881df3ed9586d79f2e4c87cd462ffff3a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1l5zwsbd.xzy.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/3796-1-0x0000000000C90000-0x0000000000CE8000-memory.dmp

Filesize
352KB

Download
memory/3796-186-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/3796-0-0x00007FF8A3943000-0x00007FF8A3944000-memory.dmp

Filesize
4KB

Download
memory/3796-185-0x00007FF8A3943000-0x00007FF8A3944000-memory.dmp

Filesize
4KB

Download
memory/3796-184-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-12-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-52-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-48-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-41-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-11-0x00000164737F0000-0x0000016473866000-memory.dmp

Filesize
472KB

Download
memory/4976-10-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-7-0x00007FF8A3940000-0x00007FF8A432C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-6-0x00000164734C0000-0x00000164734E2000-memory.dmp

Filesize
136KB

Download