Analysis Overview
SHA256
15b874bf48138911f8e51bcd50b8fbfbb92b2195e841e8f019ec0a4bf43d0b3c
Threat Level: Known bad
The file workpls.exe was found to be: Known bad.
Malicious Activity Summary
Xworm
Xworm family
Detect Xworm Payload
Command and Scripting Interpreter: PowerShell
Drops startup file
Checks computer location settings
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-14 05:53
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: behavioral2
Detonation Overview
Submitted
2024-06-14 05:53
Reported
2024-06-14 05:56
Platform
win10v2004-20240508-en
Max time kernel
146s
Max time network
148s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" | C:\Users\Admin\AppData\Local\Temp\workpls.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 |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
Enumerates physical storage devices
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\workpls.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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\workpls.exe
"C:\Users\Admin\AppData\Local\Temp\workpls.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\workpls.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'workpls.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\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'
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
Files
memory/1328-0-0x00007FFE31143000-0x00007FFE31145000-memory.dmp
memory/1328-1-0x0000000000970000-0x000000000098A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h3ovoc1o.0im.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/3624-2-0x00000167E9110000-0x00000167E9132000-memory.dmp
memory/3624-12-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
memory/3624-13-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
memory/3624-14-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
memory/3624-15-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
memory/3624-18-0x00007FFE31140000-0x00007FFE31C01000-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 | 6d42b6da621e8df5674e26b799c8e2aa |
| SHA1 | ab3ce1327ea1eeedb987ec823d5e0cb146bafa48 |
| SHA256 | 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c |
| SHA512 | 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | d65ebc84c6b0b52901fb46f5e2b83ab5 |
| SHA1 | d036a0c3eb9e1616d0f7f5ca41171060c13a3095 |
| SHA256 | d45581b0807a0d04a70ec75e3e4575e73f148e5b4e0d3d325dfbd6400a4bfbd1 |
| SHA512 | 88ac232e7702ebd53788cf8429d266ae367111bfccf4bc9d40ead25b552347521458ca60d320e2775b5d2edcaf8501251cb2db68b38dc000ac50463fb80865be |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 2bb005f08e40b9d8c31f1c09da44565d |
| SHA1 | 8a7097ecaeca704b6d653bfedea449cfbe79072f |
| SHA256 | d7c96f73a5074bd88297839f5e749996eb91510490acd18d16edd5751f087943 |
| SHA512 | 3da328cd8050288fcd5e9545812f5b0767aa9c19674d6f6f5dc35e92d436b2690056018910ff5a90f33c1f6d9602c70a256637d52498f1794efc8617fea6cbe3 |
memory/1328-57-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
memory/1328-58-0x00007FFE31140000-0x00007FFE31C01000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-14 05:53
Reported
2024-06-14 05:56
Platform
win7-20240221-en
Max time kernel
149s
Max time network
149s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| 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 |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" | C:\Users\Admin\AppData\Local\Temp\workpls.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
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:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\workpls.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\workpls.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\workpls.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\workpls.exe
"C:\Users\Admin\AppData\Local\Temp\workpls.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\workpls.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'workpls.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\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\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6603.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp | |
| US | 147.185.221.18:18043 | tcp |
Files
memory/2164-0-0x000007FEF5F23000-0x000007FEF5F24000-memory.dmp
memory/2164-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp
memory/1296-6-0x0000000002B30000-0x0000000002BB0000-memory.dmp
memory/1296-7-0x000000001B5D0000-0x000000001B8B2000-memory.dmp
memory/1296-8-0x0000000001F00000-0x0000000001F08000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | ecbeb1e4da19783e92eb6c4051a82a6d |
| SHA1 | 988ec64c0fd30e68b31f893280f2969d8bb56dfe |
| SHA256 | 861f6efbf65d1ee2821ffc44a2d279321bc78bcec7a8a05126bd3a926837e541 |
| SHA512 | c8f0a7661c21098c09a44424277feab77faeb161d1de8e2210a3bbc0b5d68b787aa9dd61cb80b226187ae164e06d20a9f95a8ee2a56db4743e47914f6972bf5d |
memory/2152-14-0x000000001B440000-0x000000001B722000-memory.dmp
memory/2152-15-0x00000000023C0000-0x00000000023C8000-memory.dmp
\??\PIPE\srvsvc
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/2164-32-0x000000001B3E0000-0x000000001B460000-memory.dmp
memory/2164-33-0x000007FEF5F23000-0x000007FEF5F24000-memory.dmp
memory/2164-34-0x000000001B3E0000-0x000000001B460000-memory.dmp
memory/2164-36-0x0000000000560000-0x000000000056C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp6603.tmp.bat
| MD5 | fc0988492a8b9efbeea957df7e877902 |
| SHA1 | 597e36a40f5b00eadafd9cdb7db508ecea11f8d7 |
| SHA256 | 7032aea8291374913e99e46b97de56107de6952b7b7414de5c31d1bda0dadc43 |
| SHA512 | 4eac4e9944fe2377628a1ae3e2c5706cdc19db2e3d68a3fb889cdfeed227a1517866febcec18e3916716a0a86e8b3be8a1b155502223098b179f4e882c0cd822 |