xworm | 90a1939a03a4c6a0cd4fa491f106e96597faf34110bc58e013f1604bad88d4a3

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

C2

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
behavioral5/memory/1340-1-0x0000000000F70000-0x0000000000FC8000-memory.dmp	family_xworm
behavioral5/files/0x000700000002a9c1-53.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
3112	powershell.exe
2568	powershell.exe
5048	powershell.exe
4432	powershell.exe

Executes dropped EXE 15 IoCs

pid	Process
2844	Steam.exe
5044	Steam.exe
4156	Steam.exe
4944	Steam.exe
736	Steam.exe
4868	Steam.exe
4000	Steam.exe
4720	Steam.exe
556	Steam.exe
5096	Steam.exe
1728	Steam.exe
1440	Steam.exe
4988	Steam.exe
2472	Steam.exe
3692	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-1-5-21-2551177587-3778486488-1329702901-1000\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
2356	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3112	powershell.exe
3112	powershell.exe
2568	powershell.exe
2568	powershell.exe
5048	powershell.exe
5048	powershell.exe
4432	powershell.exe
4432	powershell.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	Client.exe
Token: SeDebugPrivilege	3112	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeDebugPrivilege	4432	powershell.exe
Token: SeDebugPrivilege	1340	Client.exe
Token: SeDebugPrivilege	2844	Steam.exe
Token: SeDebugPrivilege	5044	Steam.exe
Token: SeDebugPrivilege	4156	Steam.exe
Token: SeDebugPrivilege	4944	Steam.exe
Token: SeDebugPrivilege	736	Steam.exe
Token: SeDebugPrivilege	4868	Steam.exe
Token: SeDebugPrivilege	4000	Steam.exe
Token: SeDebugPrivilege	4720	Steam.exe
Token: SeDebugPrivilege	556	Steam.exe
Token: SeDebugPrivilege	5096	Steam.exe
Token: SeDebugPrivilege	1728	Steam.exe
Token: SeDebugPrivilege	1440	Steam.exe
Token: SeDebugPrivilege	4988	Steam.exe
Token: SeDebugPrivilege	2472	Steam.exe
Token: SeDebugPrivilege	3692	Steam.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 3112	1340	Client.exe	82
PID 1340 wrote to memory of 3112	1340	Client.exe	82
PID 1340 wrote to memory of 2568	1340	Client.exe	84
PID 1340 wrote to memory of 2568	1340	Client.exe	84
PID 1340 wrote to memory of 5048	1340	Client.exe	86
PID 1340 wrote to memory of 5048	1340	Client.exe	86
PID 1340 wrote to memory of 4432	1340	Client.exe	88
PID 1340 wrote to memory of 4432	1340	Client.exe	88
PID 1340 wrote to memory of 2356	1340	Client.exe	90
PID 1340 wrote to memory of 2356	1340	Client.exe	90

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:1340
- 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:3112
- 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:2568
- 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:5048
- 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
  - Suspicious use of AdjustPrivilegeToken
  PID:4432
- 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:2356

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2844

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5044

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4156

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4944

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:736

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4868

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4000

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4720

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:556

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5096

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1728

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1440

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4988

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2472

C:\ProgramData\Steam.exe
C:\ProgramData\Steam.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

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
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
aa4f31835d07347297d35862c9045f4a

SHA1
83e728008935d30f98e5480fba4fbccf10cefb05

SHA256
99c83bc5c531e49d4240700142f3425aba74e18ebcc23556be32238ffde9cce0

SHA512
ec3a4bee8335007b8753ae8ac42287f2b3bcbb258f7fc3fb15c9f8d3e611cb9bf6ae2d3034953286a34f753e9ec33f7495e064bab0e8c7fcedd75d6e5eb66629

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

Filesize
944B

MD5
4c6ea4a0e466343fe80aff374d0ce234

SHA1
de0688130d88bba62d6f153824a7c7e58e7ad759

SHA256
0697cbd5fb05047aba58bcb91a3a23d7720b6390b0324ed10b03ec77e9b07c3a

SHA512
d29da0fc8c9d95a7eb00730efb4e318b6dd0ffc56d047b583a5ee5543e9ac642b0b5e6ca4adbb84c3aadebbd585a7bebbec3e3f870821543dba1e8455a1eb90f

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

Filesize
944B

MD5
4914eb0b2ff51bfa48484b5cc8454218

SHA1
6a7c3e36ce53b42497884d4c4a3bda438dd4374b

SHA256
7e510fc9344ef239ab1ab650dc95bb25fd44e2efba8b8246a3ac17880ee8b69e

SHA512
83ab35f622f4a5040ca5cb615a30f83bb0741449225f1fd1815b6923e225c28241d0c02d34f83f743349a5e57f84ca1c6f44016797a93d5985be41d11be79500

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yg5nynbg.bzn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1340-1-0x0000000000F70000-0x0000000000FC8000-memory.dmp

Filesize
352KB

Download
memory/1340-0-0x00007FF9B0D93000-0x00007FF9B0D95000-memory.dmp

Filesize
8KB

Download
memory/1340-52-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/1340-51-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-11-0x000001B7FAF30000-0x000001B7FAF52000-memory.dmp

Filesize
136KB

Download
memory/3112-18-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-15-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-14-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-13-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-12-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download
memory/3112-10-0x00007FF9B0D90000-0x00007FF9B1852000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads