Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
14-09-2024 00:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe
Resource
win7-20240903-en
General
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Target
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe
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Size
665KB
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MD5
748da875840f2e2c2690b830edfd7397
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SHA1
fe0309b4cebb5ce6284e6a9a0bab1d4bc0032e56
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SHA256
8c84110b6de408ddc9d9e1b13bfb487543a75d8b4423581652bbfb85ed87acd5
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SHA512
ffdcca7cd4590d5456ab869d5e3533a4f073bce683bb9a23c8d23aaef3ee37eb3ae0e99a169dc1ae8960bbc5ed16f0c011a9b1222a25a6b4f07daa6cde546a01
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SSDEEP
12288:XubXcIpafJcLln5QwnVWqqPIBONhxsU/EbBjvrEH78x:Xurj90r/xsU/EhrEH7c
Malware Config
Signatures
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Detects Floxif payload 1 IoCs
Processes:
resource yara_rule behavioral1/files/0x000c00000001225c-1.dat floxif -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule behavioral1/files/0x000c00000001225c-1.dat acprotect -
Loads dropped DLL 1 IoCs
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exepid Process 1796 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe -
Processes:
resource yara_rule behavioral1/files/0x000c00000001225c-1.dat upx behavioral1/memory/1796-3-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral1/memory/1796-62-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exedescription ioc Process File opened (read-only) \??\e: 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe -
Drops file in Program Files directory 2 IoCs
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exedescription ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe File created \??\c:\program files\common files\system\symsrv.dll.000 2024-09-14_748da875840f2e2c2690b830edfd7397_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.
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exepid Process 1796 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exedescription pid Process Token: SeDebugPrivilege 1796 2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-14_748da875840f2e2c2690b830edfd7397_avoslocker_cobalt-strike_floxif.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-14_748da875840f2e2c2690b830edfd7397_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:1796
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4KB
MD5642bdcf74f46548e175e40fa1aa93dcc
SHA10b830de84d7ce631dd079bb0ea828f4fbf51b3eb
SHA256fbce0ba5ed55bf684b830d20112d4b6e990b65e3f3cba2e876feffbff4706b48
SHA5127844ab738fabe3eb705b051b16c4a41425b997c9078db565a4d954245f1b874ae6fd12994ca929e4691640e68208a05d915117ba8c1b90671e40a3187d58f877
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab