Analysis
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max time kernel
300s -
max time network
180s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
08/03/2023, 03:56
Behavioral task
behavioral1
Sample
a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe
Resource
win10-20230220-en
General
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Target
a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe
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Size
29KB
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MD5
1f2126ce6f8cc98a2159a33fa81b4285
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SHA1
aaf914b5e5f7d79ab387a07019033bb28c4f0956
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SHA256
a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc
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SHA512
621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377
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SSDEEP
768:khafATBfqNGiP+x800ekJHwCukdqS+/td7N:cy2BfqNGMo/vpkQSOb7
Malware Config
Extracted
smokeloader
2022
https://humman.art/
http://humman.art/
Signatures
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Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/3520-119-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3520-122-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/files/0x000500000001a511-154.dat family_smokeloader behavioral2/files/0x000500000001a511-155.dat family_smokeloader behavioral2/memory/1396-156-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1396-158-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Deletes itself 1 IoCs
pid Process 3236 Process not Found -
Executes dropped EXE 1 IoCs
pid Process 1396 avrssia -
Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avrssia Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avrssia Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI avrssia -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3520 a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe 3520 a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3236 Process not Found -
Suspicious behavior: MapViewOfSection 14 IoCs
pid Process 3520 a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 3236 Process not Found 1396 avrssia -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 3236 Process not Found Token: SeCreatePagefilePrivilege 3236 Process not Found -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 3236 wrote to memory of 4964 3236 Process not Found 66 PID 3236 wrote to memory of 4964 3236 Process not Found 66 PID 3236 wrote to memory of 4964 3236 Process not Found 66 PID 3236 wrote to memory of 4964 3236 Process not Found 66 PID 3236 wrote to memory of 60 3236 Process not Found 67 PID 3236 wrote to memory of 60 3236 Process not Found 67 PID 3236 wrote to memory of 60 3236 Process not Found 67 PID 3236 wrote to memory of 2132 3236 Process not Found 68 PID 3236 wrote to memory of 2132 3236 Process not Found 68 PID 3236 wrote to memory of 2132 3236 Process not Found 68 PID 3236 wrote to memory of 2132 3236 Process not Found 68 PID 3236 wrote to memory of 1644 3236 Process not Found 69 PID 3236 wrote to memory of 1644 3236 Process not Found 69 PID 3236 wrote to memory of 1644 3236 Process not Found 69 PID 3236 wrote to memory of 1644 3236 Process not Found 69 PID 3236 wrote to memory of 3888 3236 Process not Found 70 PID 3236 wrote to memory of 3888 3236 Process not Found 70 PID 3236 wrote to memory of 3888 3236 Process not Found 70 PID 3236 wrote to memory of 4620 3236 Process not Found 71 PID 3236 wrote to memory of 4620 3236 Process not Found 71 PID 3236 wrote to memory of 4620 3236 Process not Found 71 PID 3236 wrote to memory of 4620 3236 Process not Found 71 -
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\a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe"C:\Users\Admin\AppData\Local\Temp\a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3520
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵PID:4964
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵PID:60
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵PID:2132
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵PID:1644
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵PID:3888
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵PID:4620
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C:\Users\Admin\AppData\Roaming\avrssiaC:\Users\Admin\AppData\Roaming\avrssia1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1396
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
29KB
MD51f2126ce6f8cc98a2159a33fa81b4285
SHA1aaf914b5e5f7d79ab387a07019033bb28c4f0956
SHA256a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc
SHA512621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377
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Filesize
29KB
MD51f2126ce6f8cc98a2159a33fa81b4285
SHA1aaf914b5e5f7d79ab387a07019033bb28c4f0956
SHA256a73098a6b3db0ba29a660c287be364d5d676e9fece6495b8dfa90e48e29868fc
SHA512621db8b88c8556c2dcd3401b38bb2b16d5cd75f54bc8fe8d1ed77ea699dd43776e3bb76c78bb86c1098951666b181808f0565e78666d534f0a469daac7c1f377