Analysis Overview
SHA256
4b02692bf468a164e333bbfc961c5974d0a95009a72ea8bff2e9cb677eae4f56
Threat Level: Known bad
The file client.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Asyncrat family
Async RAT payload
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-25 14:47
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-25 14:47
Reported
2024-01-25 14:50
Platform
win7-20231215-en
Max time kernel
148s
Max time network
153s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | 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
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\client.exe
"C:\Users\Admin\AppData\Local\Temp\client.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"' & exit
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5F11.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"'
C:\Users\Admin\AppData\Roaming\chromeupdate.exe
"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"
Network
| Country | Destination | Domain | Proto |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp |
Files
memory/2944-0-0x0000000001240000-0x0000000001258000-memory.dmp
memory/2944-1-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp
memory/2944-3-0x000000001ADF0000-0x000000001AE70000-memory.dmp
memory/2944-8-0x0000000077080000-0x0000000077229000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp5F11.tmp.bat
| MD5 | 9939a4bc8388d70b708ab7e0f2a3757e |
| SHA1 | d18fd1e5f2d974dba43f7644c29416f0c6a82005 |
| SHA256 | 1cce710732f8041f379bb92b9594b79851bac02a2005b7ab166e6e9ba3e5ddc3 |
| SHA512 | 97c8613d0501c2a46df171b5485adbb365d2d969834dae9fef00e1740d647c3e2087211c624ae4f300e966e3c1a31037e5339bb89ff34966a99dfe8c90e8b5d1 |
memory/2944-14-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp
memory/2944-15-0x0000000077080000-0x0000000077229000-memory.dmp
C:\Users\Admin\AppData\Roaming\chromeupdate.exe
| MD5 | 25b6389bbaa746df85d53714d4a6d477 |
| SHA1 | 86e6443e902f180f32fb434e06ecf45d484582e3 |
| SHA256 | 4b02692bf468a164e333bbfc961c5974d0a95009a72ea8bff2e9cb677eae4f56 |
| SHA512 | 6ad22c119b548f0e8ed5adb6c9f48c33b356340a7309c8185bec817f2562ae99760ff79e131c89bce2be122b6385bee610704f37edb7f1656a1b9d4782a1fcf4 |
memory/2680-19-0x0000000000CE0000-0x0000000000CF8000-memory.dmp
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
| MD5 | cf759e4c5f14fe3eec41b87ed756cea8 |
| SHA1 | c27c796bb3c2fac929359563676f4ba1ffada1f5 |
| SHA256 | c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761 |
| SHA512 | c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b |
memory/2680-21-0x000007FEF4A50000-0x000007FEF543C000-memory.dmp
memory/2680-22-0x0000000002180000-0x0000000002200000-memory.dmp
memory/2680-23-0x0000000077080000-0x0000000077229000-memory.dmp
memory/2680-24-0x000007FEF4A50000-0x000007FEF543C000-memory.dmp
memory/2680-25-0x0000000002180000-0x0000000002200000-memory.dmp
memory/2680-26-0x0000000077080000-0x0000000077229000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-25 14:47
Reported
2024-01-25 14:50
Platform
win10v2004-20231215-en
Max time kernel
148s
Max time network
155s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | 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
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\chromeupdate.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\client.exe
"C:\Users\Admin\AppData\Local\Temp\client.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"' & exit
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8FAD.tmp.bat""
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"'
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\chromeupdate.exe
"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.135.221.88.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| GB | 96.16.110.41:443 | tcp | |
| SE | 192.229.221.95:80 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp | |
| US | 8.8.8.8:53 | 8.179.89.13.in-addr.arpa | udp |
| BG | 93.123.39.68:4449 | tcp | |
| BG | 93.123.39.68:4449 | tcp |
Files
memory/3580-0-0x0000000000FA0000-0x0000000000FB8000-memory.dmp
memory/3580-2-0x00007FFCAF740000-0x00007FFCB0201000-memory.dmp
memory/3580-3-0x000000001BC10000-0x000000001BC20000-memory.dmp
memory/3580-8-0x00007FFCCE090000-0x00007FFCCE285000-memory.dmp
memory/3580-9-0x00007FFCAF740000-0x00007FFCB0201000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp8FAD.tmp.bat
| MD5 | 8bfdf7b87a8dcf50433efafb70e6b794 |
| SHA1 | e89a49742dc2d4bf7148f13ae600501c7386b523 |
| SHA256 | fe8d831850f9cfc50c6991722ea7a8552340ee3cd588252bc8f34e430d09ecba |
| SHA512 | 2eff1988befa3327e70d4718ecd4f0a820e6b8f3c40c041112513bdae2330bca633f2e1ebad71da2c2a4c0ad38096cc3e70f78d56d3bcf11718a43b6816faf31 |
C:\Users\Admin\AppData\Roaming\chromeupdate.exe
| MD5 | 25b6389bbaa746df85d53714d4a6d477 |
| SHA1 | 86e6443e902f180f32fb434e06ecf45d484582e3 |
| SHA256 | 4b02692bf468a164e333bbfc961c5974d0a95009a72ea8bff2e9cb677eae4f56 |
| SHA512 | 6ad22c119b548f0e8ed5adb6c9f48c33b356340a7309c8185bec817f2562ae99760ff79e131c89bce2be122b6385bee610704f37edb7f1656a1b9d4782a1fcf4 |
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
| MD5 | cf759e4c5f14fe3eec41b87ed756cea8 |
| SHA1 | c27c796bb3c2fac929359563676f4ba1ffada1f5 |
| SHA256 | c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761 |
| SHA512 | c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b |
memory/4508-15-0x00007FFCAF740000-0x00007FFCB0201000-memory.dmp
memory/4508-16-0x0000000002D60000-0x0000000002D70000-memory.dmp
memory/4508-17-0x00007FFCAF740000-0x00007FFCB0201000-memory.dmp
memory/4508-18-0x0000000002D60000-0x0000000002D70000-memory.dmp