Analysis Overview
SHA256
43acaa8dd6ef2afc04a0c5de6b4c6ffb879e79af8c4ebcc033c9a230ffa7944a
Threat Level: Known bad
The file XClient.exe was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Xworm family
Command and Scripting Interpreter: PowerShell
Drops startup file
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Enumerates physical storage devices
Unsigned PE
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-30 12:28
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-30 12:28
Reported
2024-05-30 12:33
Platform
win10v2004-20240226-en
Max time kernel
233s
Max time network
296s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Xworm
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Runtime Broker.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Runtime Broker.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\Users\\Admin\\AppData\\Roaming\\Runtime Broker.exe" | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Runtime Broker.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Runtime Broker.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
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'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
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\Roaming\Runtime Broker.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
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=4080 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /delete /f /tn "Runtime Broker"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3605.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| GB | 172.217.169.74:443 | tcp | |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 8.8.8.8:53 | 24.19.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | brands-omissions.gl.at.ply.gg | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 147.185.221.20:3488 | brands-omissions.gl.at.ply.gg | tcp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 20.221.185.147.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.16.208.104.in-addr.arpa | udp |
Files
memory/2432-0-0x00007FF82DDE3000-0x00007FF82DDE5000-memory.dmp
memory/2432-1-0x00000000001A0000-0x00000000001B6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oonmdl4j.35k.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/668-11-0x0000019902990000-0x00000199029B2000-memory.dmp
memory/668-12-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
memory/668-13-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
memory/668-14-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
memory/668-15-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
memory/668-18-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | d85ba6ff808d9e5444a4b369f5bc2730 |
| SHA1 | 31aa9d96590fff6981b315e0b391b575e4c0804a |
| SHA256 | 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f |
| SHA512 | 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 62623d22bd9e037191765d5083ce16a3 |
| SHA1 | 4a07da6872672f715a4780513d95ed8ddeefd259 |
| SHA256 | 95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010 |
| SHA512 | 9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 4f473e15a0686d0c819ad40b5f232368 |
| SHA1 | a769892ae2e8203e7d4a992a317189b56723da33 |
| SHA256 | 53d6c0d9a801d45fefdcec9b3ecf217fef683efc4e40ba9c72f0116ee4d20237 |
| SHA512 | d9b43132432078d5496688717253e58e7caab0dcbd20fc41fa8a718d11d699e93ee198f18be4243ed34bcf8912e1377888fe72ae5b26d920e765ab523f0bdf55 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 50d3033f2bc3a3774c469d03e71a79a9 |
| SHA1 | 22027b1d52085de99b3bffa276530fea5d961471 |
| SHA256 | 2987e99ec7fa17bd4ab7de3cb4dc62645e1052012a5a357904d6fc6db9054147 |
| SHA512 | ecf7ab1a9e4192454a3e24c60453fd702a8c648e00078fc933b9182f4a3d3c10c6f5da622a5729b35727e6ddc8837029caddcaf76f56e805b9744253b56da5d8 |
memory/2432-57-0x00007FF82DDE3000-0x00007FF82DDE5000-memory.dmp
memory/2432-58-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
| MD5 | ec8785fe24a3652b48f3c26305fbe895 |
| SHA1 | 55d19ee15841fc8f9862d1c5eed0884b7c0b4363 |
| SHA256 | 43acaa8dd6ef2afc04a0c5de6b4c6ffb879e79af8c4ebcc033c9a230ffa7944a |
| SHA512 | 20e792dfe3d50159bc67267ab067dbdf4b29c52cd865bb7fbacfcb6e1b0a52a10a9fe5efb09b3f074c01b06feb8354ee293ecdb0b1c843e530f6d2cd2278824d |
memory/2432-62-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Runtime Broker.exe.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |
memory/2432-71-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp3605.tmp.bat
| MD5 | aeb8f9994d906674bf3b2399b4c5eeb2 |
| SHA1 | 70a97c3e9bccc9194f35a89cbc3811546910ccf0 |
| SHA256 | 7e7cd6272bf38d3505a88365408e0b226afc409c5c953e2c86f4e9d33a657425 |
| SHA512 | 95bc024726e96c20bbc44b67b525d50f8ada5af32ac6daa4a102cfcf6ef0660cd2fae351ae4b03c60a96a4aee855f8a8d3c806762cc001416bbf3620bf3837ba |