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Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
28/01/2025, 01:47
Static task
static1
Behavioral task
behavioral1
Sample
2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe
Resource
win7-20240903-en
General
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Target
2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe
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Size
461KB
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MD5
3671d6a9ca42f394c235d6ef8ae4a071
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SHA1
f2efbef6b83bebdb8af7e44fcaa0a99169d14439
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SHA256
636636122ced4a0845c494c482abb6ad7c3b7b1bda46a66ae41f723cee3a4600
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SHA512
c4176a1562490a63b513c48d10a8d5026c649576aa6fc7d6175730715d595c4f52604b4396bcf9714ce545ad82af44739cbd90ba01524dca8615812c1ba7aaa0
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SSDEEP
12288:SJRL3UmCb6U38Y9de3ANbCS0Z8MfsVdxenVWqqPIBONhxs8hmhSBjvrEH7QK:SJRL3Qp9dNNbCiMfsVf1/xs8hmCrEH7F
Malware Config
Signatures
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Floxif family
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Detects Floxif payload 1 IoCs
resource yara_rule behavioral1/files/0x00070000000120fe-2.dat floxif -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x00070000000120fe-2.dat acprotect -
Loads dropped DLL 1 IoCs
pid Process 2540 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\e: 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe -
resource yara_rule behavioral1/files/0x00070000000120fe-2.dat upx behavioral1/memory/2540-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral1/memory/2540-62-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe File created \??\c:\program files\common files\system\symsrv.dll.000 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2540 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2540 2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-28_3671d6a9ca42f394c235d6ef8ae4a071_avoslocker_cobalt-strike_floxif.exe"1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2540
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5KB
MD51748e3a9503ebe7749dbcce4a27215d9
SHA193aa4a706c7a096409876fe6e8a510d6b7d0d6d2
SHA256d28b0ec44cdd6e854d497a5edb7ce00607bcdfe3ff2c133ae93c5d4fe215c38f
SHA512709770780cc27ed1733d4d8bac045e73aef2123c9a6c9d9a9e792506b32b61d12cff11a50b9d67c6d151a8b64cedb8ca15d3c13cf80efb57d69787e022e29af3
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab