Analysis
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max time kernel
264s -
max time network
270s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
10-07-2024 21:05
Behavioral task
behavioral1
Sample
creative sound blaster.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
creative sound blaster.exe
Resource
win10v2004-20240709-en
General
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Target
creative sound blaster.exe
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Size
272KB
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MD5
ec3968fd0cf6b025017dbb83249de6f2
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SHA1
e1805d0f7984f46819320f2121fc67948c0cdfa5
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SHA256
3537198ebe7eb84bea0eaf47c3955d02b7d6b0d94cef1415d25c1558191a19bd
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SHA512
f73da223c70fe28f0f0515d17c56e3c8f2ced64894489749a9ad02822995e72429b6ab50963d84676a3de1f76d48bc5952cbb98f044376929332964fb228c509
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SSDEEP
3072:pUTcxgTEiPMVTb3SH1bnrgYQgy9ckYMmlB/v6A80XH3e55EVu9cBY:pCEiPMVTbiVb0YS5YM6VyA80XHbUe
Malware Config
Extracted
asyncrat
Venom RAT + HVNC + Stealer + Grabber v6.0.3
dllhost.dat
147.185.221.21:5552
147.185.221.21:6643
evyjfpsdxkkqc
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delay
1
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install
true
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install_file
dllhost.dat.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\dllhost.dat.exe family_asyncrat -
Executes dropped EXE 1 IoCs
Processes:
dllhost.dat.exepid process 2760 dllhost.dat.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 532 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 23 IoCs
Processes:
creative sound blaster.exedllhost.dat.exepid process 1528 creative sound blaster.exe 1528 creative sound blaster.exe 1528 creative sound blaster.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe 2760 dllhost.dat.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
creative sound blaster.exedllhost.dat.exedescription pid process Token: SeDebugPrivilege 1528 creative sound blaster.exe Token: SeDebugPrivilege 2760 dllhost.dat.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
dllhost.dat.exepid process 2760 dllhost.dat.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
creative sound blaster.execmd.execmd.exedescription pid process target process PID 1528 wrote to memory of 2116 1528 creative sound blaster.exe cmd.exe PID 1528 wrote to memory of 2116 1528 creative sound blaster.exe cmd.exe PID 1528 wrote to memory of 2116 1528 creative sound blaster.exe cmd.exe PID 1528 wrote to memory of 1824 1528 creative sound blaster.exe cmd.exe PID 1528 wrote to memory of 1824 1528 creative sound blaster.exe cmd.exe PID 1528 wrote to memory of 1824 1528 creative sound blaster.exe cmd.exe PID 2116 wrote to memory of 2320 2116 cmd.exe schtasks.exe PID 2116 wrote to memory of 2320 2116 cmd.exe schtasks.exe PID 2116 wrote to memory of 2320 2116 cmd.exe schtasks.exe PID 1824 wrote to memory of 532 1824 cmd.exe timeout.exe PID 1824 wrote to memory of 532 1824 cmd.exe timeout.exe PID 1824 wrote to memory of 532 1824 cmd.exe timeout.exe PID 1824 wrote to memory of 2760 1824 cmd.exe dllhost.dat.exe PID 1824 wrote to memory of 2760 1824 cmd.exe dllhost.dat.exe PID 1824 wrote to memory of 2760 1824 cmd.exe dllhost.dat.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\creative sound blaster.exe"C:\Users\Admin\AppData\Local\Temp\creative sound blaster.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "dllhost.dat" /tr '"C:\Users\Admin\AppData\Roaming\dllhost.dat.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "dllhost.dat" /tr '"C:\Users\Admin\AppData\Roaming\dllhost.dat.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB7EA.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\dllhost.dat.exe"C:\Users\Admin\AppData\Roaming\dllhost.dat.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\CabD2EB.tmpFilesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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C:\Users\Admin\AppData\Local\Temp\Tar47FD.tmpFilesize
181KB
MD54ea6026cf93ec6338144661bf1202cd1
SHA1a1dec9044f750ad887935a01430bf49322fbdcb7
SHA2568efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA5126c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
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C:\Users\Admin\AppData\Local\Temp\tmpB7EA.tmp.batFilesize
155B
MD5d537876f80100a94dc34b66d8cbec3c0
SHA127531fa4eeb5337138e95bb19dad91e288c41cee
SHA256c679f362e6faa381931975e9d04e74516aae1b5f579ade26afeda96d5802276d
SHA512b1b7a9bf7ffe526f7dd734b523d8b23d69c54f181b4111df0f21155a4aef801c97165748befe085906b9e7b69ea158c2d8e47ccd9233aca96078b69deea124c5
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C:\Users\Admin\AppData\Roaming\MyData\DataLogs.confFilesize
8B
MD5cf759e4c5f14fe3eec41b87ed756cea8
SHA1c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b
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C:\Users\Admin\AppData\Roaming\dllhost.dat.exeFilesize
272KB
MD5ec3968fd0cf6b025017dbb83249de6f2
SHA1e1805d0f7984f46819320f2121fc67948c0cdfa5
SHA2563537198ebe7eb84bea0eaf47c3955d02b7d6b0d94cef1415d25c1558191a19bd
SHA512f73da223c70fe28f0f0515d17c56e3c8f2ced64894489749a9ad02822995e72429b6ab50963d84676a3de1f76d48bc5952cbb98f044376929332964fb228c509
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memory/1528-0-0x000007FEF5263000-0x000007FEF5264000-memory.dmpFilesize
4KB
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memory/1528-1-0x0000000000880000-0x00000000008CA000-memory.dmpFilesize
296KB
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memory/1528-3-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmpFilesize
9.9MB
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memory/1528-12-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmpFilesize
9.9MB
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memory/1528-13-0x000007FEF5260000-0x000007FEF5C4C000-memory.dmpFilesize
9.9MB
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memory/2760-18-0x0000000000D80000-0x0000000000DCA000-memory.dmpFilesize
296KB