xworm | 14fc945249c10349174b83ae6330d19a8621f2a65ba69a54b2b923bf96933c3e

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 04:27

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General

Target
XClient.exe
Size 74KB
Sample240611-e3l7rsvdnq
SHA256 14fc945249c10349174b83ae6330d19a8621f2a65ba69a54b2b923bf96933c3e
MD5 98f79018890d5b65e153e9d3082b024b
SHA1 2fa9e5abbc16d656d4dafa036af9a29e83fe9304
SHA512 d3599c1f5b09d26328469a0011dd61fbb9560fd851a1e47ab14cc5bc20ab28012f60eda0cce07be6ad1e22d8ff3012221ddf9c64f0a08dc52683744852e456cf
SSDEEP 1536:Qz2TVwZ+XVb6MIOkbpl9ZyhV956KMzNOfK5N5bR44:Qz2pXlb6YkbpUV9ZkNOgtu4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

association-bowl.gl.at.ply.gg:32006

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2756-1-0x0000000000E60000-0x0000000000E78000-memory.dmp	family_xworm
behavioral2/files/0x000b00000002348e-59.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
3988	powershell.exe
932	powershell.exe
3596	powershell.exe
2128	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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1760	svchost.exe
1808	svchost.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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.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

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
2008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3988	powershell.exe
3988	powershell.exe
932	powershell.exe
932	powershell.exe
3596	powershell.exe
3596	powershell.exe
2128	powershell.exe
2128	powershell.exe
2756	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	XClient.exe
Token: SeDebugPrivilege	3988	powershell.exe
Token: SeDebugPrivilege	932	powershell.exe
Token: SeDebugPrivilege	3596	powershell.exe
Token: SeDebugPrivilege	2128	powershell.exe
Token: SeDebugPrivilege	2756	XClient.exe
Token: SeDebugPrivilege	1760	svchost.exe
Token: SeDebugPrivilege	1808	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 3988	2756	XClient.exe	85
PID 2756 wrote to memory of 3988	2756	XClient.exe	85
PID 2756 wrote to memory of 932	2756	XClient.exe	87
PID 2756 wrote to memory of 932	2756	XClient.exe	87
PID 2756 wrote to memory of 3596	2756	XClient.exe	90
PID 2756 wrote to memory of 3596	2756	XClient.exe	90
PID 2756 wrote to memory of 2128	2756	XClient.exe	92
PID 2756 wrote to memory of 2128	2756	XClient.exe	92
PID 2756 wrote to memory of 2008	2756	XClient.exe	94
PID 2756 wrote to memory of 2008	2756	XClient.exe	94

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- 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:2756
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:932
- 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.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3596
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2128
- 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\Roaming\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2008

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1760

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1808

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

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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svchost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 44e538c7570e175634f9929d350a79203730fcb753638f611a1dd4780ec430ed
MD5 481c1608c2bec426ca209e8800611abd
SHA1 5df5a08760b0e5c56cb9daf768894435354d2651
SHA512 5a87762225beffbd34048fd0d617a75eff25ca6dfe47c258cdfad8c841f8b0b4144ae8c7ef04ee5de36987cb6ae0953499d5fa27b2100483a8042ee5e27d190c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 d1d2ad030d1a8aee9d8147ea16c8753c946155300339c6e63803a5f7419f9e3d
MD5 06ac741759229a7560289a6696924995
SHA1 e1808432385699095a0761c601437ebe3e0ec256
SHA512 3f97e1649f3241a64f6cc0e80e9d605c36b5ab658f766066a9326b93db3703710e2bb9e2dd1398bd45a7a854533fed4475d9a61f52d9f092fcb9307853599e85
MD5 SHA1 SHA512

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__PSScriptPolicyTest_gmddpyv5.nac.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gmddpyv5.nac.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 74KB
SHA256 14fc945249c10349174b83ae6330d19a8621f2a65ba69a54b2b923bf96933c3e
MD5 98f79018890d5b65e153e9d3082b024b
SHA1 2fa9e5abbc16d656d4dafa036af9a29e83fe9304
SHA512 d3599c1f5b09d26328469a0011dd61fbb9560fd851a1e47ab14cc5bc20ab28012f60eda0cce07be6ad1e22d8ff3012221ddf9c64f0a08dc52683744852e456cf
SSDEEP 1536:Qz2TVwZ+XVb6MIOkbpl9ZyhV956KMzNOfK5N5bR44:Qz2pXlb6YkbpUV9ZkNOgtu4
MD5 SHA1 SHA512 SSDEEP

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memory/2756-1-0x0000000000E60000-0x0000000000E78000-memory.dmp

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memory/2756-2-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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memory/2756-0-0x00007FFED2853000-0x00007FFED2855000-memory.dmp

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memory/2756-58-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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memory/2756-57-0x00007FFED2853000-0x00007FFED2855000-memory.dmp

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memory/3988-4-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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memory/3988-18-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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memory/3988-11-0x000001581BDA0000-0x000001581BDC2000-memory.dmp

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memory/3988-5-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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memory/3988-3-0x00007FFED2850000-0x00007FFED3311000-memory.dmp

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