xworm | a1292bb41ddd4ffa51e1f7e435b0bb7308edf7aa521ecfdfe9660dd42f556744

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 16:05

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
XClient.exe
Size 61KB
Sample240604-tjs9asch73
SHA256 a1292bb41ddd4ffa51e1f7e435b0bb7308edf7aa521ecfdfe9660dd42f556744
MD5 c943a5b42a5c3581ab6bf74428858a73
SHA1 4d7e7769f93816070a433a19fc837ceb725f7317
SHA512 cecffb3605f3dc05368667966f3b5cbe3e843d9549ed30dc07cf8c04b317a64ae42f75dfbc300617e589dfa98afe8b851f5fa666a68a632170cf9326e048299a
SSDEEP 1536:A6P+jJfmzZFm6TObE5yWHY6doOkf4xqij:A6jzDm9bEV0OkfYj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

simpledays-44630.portmap.host:44630

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1800-1-0x0000000000D70000-0x0000000000D86000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
1292	powershell.exe
4748	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-1-5-21-3808065738-1666277613-1125846146-1000\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
7	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
1292	powershell.exe
1292	powershell.exe
4748	powershell.exe
4748	powershell.exe
1800	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	XClient.exe
Token: SeDebugPrivilege	1292	powershell.exe
Token: SeDebugPrivilege	4748	powershell.exe
Token: SeDebugPrivilege	1800	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1800	XClient.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1292	1800	XClient.exe	91
PID 1800 wrote to memory of 1292	1800	XClient.exe	91
PID 1800 wrote to memory of 4748	1800	XClient.exe	93
PID 1800 wrote to memory of 4748	1800	XClient.exe	93

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1800
- 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:1292
- 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:4748

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=4076 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:4432

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

Loading Replay Monitor...

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

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a31805264b8b13ce4145f272cb2830728c186c46e314b48514d636866217add5
MD5 5f0ddc7f3691c81ee14d17b419ba220d
SHA1 f0ef5fde8bab9d17c0b47137e014c91be888ee53
SHA512 2ce7c2a0833f581297c13dd88ccfcd36bf129d2b5d7718c52b1d67c97cbd8fc93abc085a040229a0fd712e880c690de7f6b996b0b47c46a091fabb7931be58d3
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_ucggqida.3tx.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ucggqida.3tx.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/1292-14-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1292-13-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1292-12-0x000002A99E490000-0x000002A99E4B2000-memory.dmp

Download

memory/1292-15-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1292-16-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1292-17-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1292-20-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1800-0-0x00007FF9EA913000-0x00007FF9EA915000-memory.dmp

Download

memory/1800-2-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download

memory/1800-1-0x0000000000D70000-0x0000000000D86000-memory.dmp

Download

memory/1800-33-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Download