xworm | 528ee2c611e247cec7cf2793f2ac1fbb92d4df607aaecdf7563911f408d75865

Analysis

max time kernel
533s
max time network
563s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 13:40

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General

Target
XClient.exe
Size 161KB
Sample240602-qyhvbsef59
SHA256 528ee2c611e247cec7cf2793f2ac1fbb92d4df607aaecdf7563911f408d75865
MD5 e3575ceb1c911c4e6fc4c44d294ed208
SHA1 a9d4d40e6cf766d5f1ddc911c5e2d828e64f72c2
SHA512 3d28e9d7392ff1899c8d483b4d4250699def9f280e76bb47ef7b60475b4f25b456bd5e3e5600ed88200067b794daac49e12b55c1caff3ef01f5a475d814e5f15
SSDEEP 3072:U43KD+blX3kmOi1SuBz65/M6If+3Js+3JFkKeTna:U43xbdiuxBt25
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

20.ip.gl.ply.gg:4219

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1400-0-0x0000000000B60000-0x0000000000B8E000-memory.dmp	family_xworm
behavioral2/files/0x0012000000023364-60.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
948	powershell.exe
1844	powershell.exe
4920	powershell.exe
676	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-1-5-21-711569230-3659488422-571408806-1000\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\XClient.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe

Executes dropped EXE 9 IoCs

pid	Process
1328	XClient.exe
3184	XClient.exe
1512	XClient.exe
3808	XClient.exe
3628	XClient.exe
3848	XClient.exe
3360	XClient.exe
3884	XClient.exe
1980	XClient.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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.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
1688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
948	powershell.exe
948	powershell.exe
1844	powershell.exe
1844	powershell.exe
4920	powershell.exe
4920	powershell.exe
676	powershell.exe
676	powershell.exe
1400	XClient.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	XClient.exe
Token: SeDebugPrivilege	948	powershell.exe
Token: SeDebugPrivilege	1844	powershell.exe
Token: SeDebugPrivilege	4920	powershell.exe
Token: SeDebugPrivilege	676	powershell.exe
Token: SeDebugPrivilege	1400	XClient.exe
Token: SeDebugPrivilege	1328	XClient.exe
Token: SeDebugPrivilege	3184	XClient.exe
Token: SeDebugPrivilege	1512	XClient.exe
Token: SeDebugPrivilege	3808	XClient.exe
Token: SeDebugPrivilege	3628	XClient.exe
Token: SeDebugPrivilege	3848	XClient.exe
Token: SeDebugPrivilege	3360	XClient.exe
Token: SeDebugPrivilege	3884	XClient.exe
Token: SeDebugPrivilege	1980	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1400	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 948	1400	XClient.exe	84
PID 1400 wrote to memory of 948	1400	XClient.exe	84
PID 1400 wrote to memory of 1844	1400	XClient.exe	88
PID 1400 wrote to memory of 1844	1400	XClient.exe	88
PID 1400 wrote to memory of 4920	1400	XClient.exe	90
PID 1400 wrote to memory of 4920	1400	XClient.exe	90
PID 1400 wrote to memory of 676	1400	XClient.exe	92
PID 1400 wrote to memory of 676	1400	XClient.exe	92
PID 1400 wrote to memory of 1688	1400	XClient.exe	96
PID 1400 wrote to memory of 1688	1400	XClient.exe	96

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:1400
- 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:948
- 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:1844
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4920
- 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:676
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1688

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1328

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3184

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1512

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3808

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3628

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3848

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3360

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3884

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1980

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

XClient.exe.log

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

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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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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
MD5 77d622bb1a5b250869a3238b9bc1402b
SHA1 d47f4003c2554b9dfc4c16f22460b331886b191b
SHA512 d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de
MD5 04f1d68afbed6b13399edfae1e9b1472
SHA1 8bfdcb687a995e4a63a8c32df2c66dc89f91a8b0
SHA512 30c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
MD5 SHA1 SHA512

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__PSScriptPolicyTest_grjl3idr.bym.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_grjl3idr.bym.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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XClient.exe

Path C:\Users\Admin\AppData\Roaming\XClient.exe
Size 161KB
SHA256 528ee2c611e247cec7cf2793f2ac1fbb92d4df607aaecdf7563911f408d75865
MD5 e3575ceb1c911c4e6fc4c44d294ed208
SHA1 a9d4d40e6cf766d5f1ddc911c5e2d828e64f72c2
SHA512 3d28e9d7392ff1899c8d483b4d4250699def9f280e76bb47ef7b60475b4f25b456bd5e3e5600ed88200067b794daac49e12b55c1caff3ef01f5a475d814e5f15
SSDEEP 3072:U43KD+blX3kmOi1SuBz65/M6If+3Js+3JFkKeTna:U43xbdiuxBt25
MD5 SHA1 SHA512 SSDEEP

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memory/948-12-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/948-18-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/948-15-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/948-14-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/948-13-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/948-2-0x0000026CC7060000-0x0000026CC7082000-memory.dmp

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memory/1400-0-0x0000000000B60000-0x0000000000B8E000-memory.dmp

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memory/1400-57-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/1400-58-0x00007FFC7C303000-0x00007FFC7C305000-memory.dmp

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memory/1400-59-0x00007FFC7C300000-0x00007FFC7CDC1000-memory.dmp

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memory/1400-1-0x00007FFC7C303000-0x00007FFC7C305000-memory.dmp

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