xworm | ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e

Reason

Machine shutdown

General

Target

idk.exe
Size

94KB
MD5

f88781b7415e7b04fd13b1bbbf2009b2
SHA1

df9072bf61727db083155c04b47ce48744b23ee5
SHA256

ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e
SHA512

6c16f8287f2f14b452025be0638fb827fa6e4a3556b21119c6195bc066d577f2c1df9a8b3f500f7e56d2b33e0552c7cbec8730bd3ac14704a6250280b1aac3db
SSDEEP

1536:BItB2JRcId+cS7K/aATFcmJi1vJYbmG0VaTCVp8tA8qbQXpPQ8Qep+MDaj361dw:CyFdDSWjB0vcL0VwCz8+8qbwPtVkOg3r

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

IDKTOBEHONESTNIGAS-56344.portmap.io:56344

Attributes

Install_directory
%LocalAppData%

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001c00000002ab18-5.dat	family_xworm
behavioral1/memory/3760-8-0x0000000000440000-0x000000000045A000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1080	powershell.exe
1508	powershell.exe
420	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3760	svchost.scr

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-1-5-21-3870231897-2573482396-1083937135-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.scr"	svchost.scr

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

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365268"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "217"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.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
1412	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
420	powershell.exe
420	powershell.exe
1080	powershell.exe
1080	powershell.exe
1508	powershell.exe
1508	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3760	svchost.scr
Token: SeDebugPrivilege	420	powershell.exe
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	1508	powershell.exe
Token: SeDebugPrivilege	3760	svchost.scr
Token: SeShutdownPrivilege	3520	shutdown.exe
Token: SeRemoteShutdownPrivilege	3520	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4760	LogonUI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 3760	3200	idk.exe	77
PID 3200 wrote to memory of 3760	3200	idk.exe	77
PID 3760 wrote to memory of 420	3760	svchost.scr	79
PID 3760 wrote to memory of 420	3760	svchost.scr	79
PID 3760 wrote to memory of 1080	3760	svchost.scr	81
PID 3760 wrote to memory of 1080	3760	svchost.scr	81
PID 3760 wrote to memory of 1508	3760	svchost.scr	83
PID 3760 wrote to memory of 1508	3760	svchost.scr	83
PID 3760 wrote to memory of 1412	3760	svchost.scr	85
PID 3760 wrote to memory of 1412	3760	svchost.scr	85
PID 3760 wrote to memory of 3520	3760	svchost.scr	87
PID 3760 wrote to memory of 3520	3760	svchost.scr	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\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Users\Admin\AppData\Roaming\svchost.scr
  "C:\Users\Admin\AppData\Roaming\svchost.scr" /S
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3760
- - 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\svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:420
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1080
- - 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\svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1508
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.scr"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1412
- - C:\Windows\SYSTEM32\shutdown.exe
    shutdown.exe /f /s /t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3520

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3a09055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4760

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

Query Registry

1

T1012

System Information Discovery

1

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
05b3cd21c1ec02f04caba773186ee8d0

SHA1
39e790bfe10abf55b74dfb3603df8fcf6b5e6edb

SHA256
911efc5cf9cbeb697543eb3242f5297e1be46dd6603a390140a9ff031ed9e1e8

SHA512
e751008b032394817beb46937fd93a73be97254c2be94dd42f22fb1306d2715c653ece16fa96eab1a3e73811936768cea6b37888437086fc6f3e3e793a2515eb

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

Filesize
944B

MD5
cef328ddb1ee8916e7a658919323edd8

SHA1
a676234d426917535e174f85eabe4ef8b88256a5

SHA256
a1b5b7ada8ebc910f20f91ada3991d3321104e9da598c958b1edac9f9aca0e90

SHA512
747400c20ca5b5fd1b54bc24e75e6a78f15af61df263be932d2ee7b2f34731c2de8ce03b2706954fb098c1ac36f0b761cf37e418738fa91f2a8ea78572f545cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_psfrzfkn.2lo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.scr

Filesize
79KB

MD5
0b192c8ec04f4dcd360957eb478221d2

SHA1
522a5c7336a31c23efec4b8ccab7ce7c17d620d4

SHA256
ea6a26539f74891663a03fc3cf348ef53c14295ef3662b9a29b211a8d0503e1c

SHA512
7d5dd7c9aca799a8dc15eea9bf767ca6c7e2145ad848d2b2cefb3548cffb30bbbb3e3933aac7c602e4a1b5f02e14e46b7edbcc3945e1aa2e3cc6219941e90eb6

Download Submit
memory/420-11-0x000001DF9B0D0000-0x000001DF9B0F2000-memory.dmp

Filesize
136KB

Download
memory/3200-0-0x00007FFAB8833000-0x00007FFAB8835000-memory.dmp

Filesize
8KB

Download
memory/3200-1-0x0000000000B50000-0x0000000000B6E000-memory.dmp

Filesize
120KB

Download
memory/3760-10-0x00007FFAB8830000-0x00007FFAB92F2000-memory.dmp

Filesize
10.8MB

Download
memory/3760-9-0x00007FFAB8830000-0x00007FFAB92F2000-memory.dmp

Filesize
10.8MB

Download
memory/3760-8-0x0000000000440000-0x000000000045A000-memory.dmp

Filesize
104KB

Download
memory/3760-50-0x00007FFAB8830000-0x00007FFAB92F2000-memory.dmp

Filesize
10.8MB

Download
memory/3760-51-0x00007FFAB8830000-0x00007FFAB92F2000-memory.dmp

Filesize
10.8MB

Download
memory/3760-52-0x00007FFAB8830000-0x00007FFAB92F2000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads