xworm | 456ba538a6fa8751897a9a76aa88d69c0c01011af42a1a8f331204978424f456

Analysis

max time kernel
144s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 01:25

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General

Target
XWorm V5.4/Icons/XClient.exe
Size 162KB
Sample240605-btgddaaa51
SHA256 2c177b01f77136c9f18b106a80d9a8cbe95e8232eeeac1df7061eb096cdd4d56
MD5 f5f1d328ac2502686cd9a12b936daa75
SHA1 d8a6c77022d413ddadda8036e41ba803b0664efd
SHA512 0c215316df54bd82a7997f3a841c83f72751efa1eadb6c7d07ca624a0a59c8217dd54e4a3de498b8d1b23cfcb99a4179163545bd2720cd3db1d6610f521dfb27
SSDEEP 3072:TZ63JEGojxvVMnbO6uhzfrOxGkBz65/M6If+3Js+3JFkKeTnF:VUJVC9qbGRexBt25
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral14/memory/4052-1-0x00000000003D0000-0x00000000003FE000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral14/memory/4052-1-0x00000000003D0000-0x00000000003FE000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
2276	powershell.exe
2644	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	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
22	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2644	powershell.exe
2644	powershell.exe
2276	powershell.exe
2276	powershell.exe
4052	XClient.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	XClient.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4052	XClient.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 2644	4052	XClient.exe	91
PID 4052 wrote to memory of 2644	4052	XClient.exe	91
PID 4052 wrote to memory of 2276	4052	XClient.exe	93
PID 4052 wrote to memory of 2276	4052	XClient.exe	93

C:\Users\Admin\AppData\Local\Temp\XWorm V5.4\Icons\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm V5.4\Icons\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4052
- 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\XWorm V5.4\Icons\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- 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:2276

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

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 385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
MD5 2e907f77659a6601fcc408274894da2e
SHA1 9f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA512 34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721
MD5 SHA1 SHA512

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__PSScriptPolicyTest_l3rvu1vw.vb5.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l3rvu1vw.vb5.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2644-3-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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memory/2644-9-0x00000293EFB90000-0x00000293EFBB2000-memory.dmp

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memory/2644-14-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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memory/2644-15-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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memory/2644-18-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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memory/4052-0-0x00007FF9D4E53000-0x00007FF9D4E55000-memory.dmp

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memory/4052-2-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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memory/4052-1-0x00000000003D0000-0x00000000003FE000-memory.dmp

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memory/4052-31-0x00007FF9D4E53000-0x00007FF9D4E55000-memory.dmp

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memory/4052-32-0x00007FF9D4E50000-0x00007FF9D5911000-memory.dmp

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