Analysis
-
max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 00:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe
Resource
win10v2004-20240426-en
General
-
Target
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe
-
Size
224KB
-
MD5
0c72bb175ba9104c14c0cf668f1832ec
-
SHA1
da07aa76cc0a65c7d3a2018ac726b501273407f9
-
SHA256
14888c52667a38754fe46eda4b250c301dfd1e20563cddb756c8725d58f24bc6
-
SHA512
742a2de2d124d21ab573f71bd3e1c479ab11c1f21a23fc686f5bd5329d880800c42b61282a18d50a12f5325314d96753a06cfeb44e2fa7aa8ba0fcb83af93c8a
-
SSDEEP
6144:ayU2zi7aamRcGLKZH2FaLw9hH4JdBV+UdvrEFp7hKCop:ayU2zi+amf9hH4JdBjvrEH7mp
Malware Config
Signatures
-
UPX dump on OEP (original entry point) 5 IoCs
Processes:
resource yara_rule C:\Program Files\Common Files\System\symsrv.dll UPX behavioral2/memory/2772-3-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/2772-16-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/2772-22-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/2772-26-0x0000000010000000-0x0000000010030000-memory.dmp UPX -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule C:\Program Files\Common Files\System\symsrv.dll acprotect -
Loads dropped DLL 1 IoCs
Processes:
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exepid process 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe -
Processes:
resource yara_rule C:\Program Files\Common Files\System\symsrv.dll upx behavioral2/memory/2772-3-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/2772-16-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/2772-22-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/2772-26-0x0000000010000000-0x0000000010030000-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:
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exedescription ioc process File opened (read-only) \??\e: 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe -
Drops file in Program Files directory 2 IoCs
Processes:
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exedescription ioc process File created C:\Program Files\Common Files\System\symsrv.dll 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe File created \??\c:\program files\common files\system\symsrv.dll.000 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exepid process 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exedescription pid process Token: SeDebugPrivilege 2772 2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_0c72bb175ba9104c14c0cf668f1832ec_avoslocker_cobalt-strike_floxif.exe"1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2772
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
-
Filesize
175B
MD51130c911bf5db4b8f7cf9b6f4b457623
SHA148e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA51294e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0