Analysis
- max time kernel
151s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
05/12/2022, 01:51
General
- Target file.exe
- Size 371KB
- Sample221205-b9t96sed77
- SHA256 6eb55c2887724ad2f5aec84ed628253b3c898e3cdd5938d80989881f576c87b3
Malware Config
Signatures
- Detects Smokeloader packer 1 IoCs
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 19 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 41 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\3597.exeC:\Users\Admin\AppData\Local\Temp\3597.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 4362⤵
- Program crash
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4336 -ip 43361⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
3597.exe
3597.exe
memory/1004-174-0x0000000000710000-0x000000000071B000-memory.dmp
memory/1004-187-0x0000000000720000-0x0000000000726000-memory.dmp
memory/1004-173-0x0000000000720000-0x0000000000726000-memory.dmp
memory/1116-141-0x0000000000F90000-0x0000000000F9B000-memory.dmp
memory/1116-140-0x0000000000FA0000-0x0000000000FA7000-memory.dmp
memory/1116-181-0x0000000000FA0000-0x0000000000FA7000-memory.dmp
memory/1152-183-0x0000000001020000-0x0000000001025000-memory.dmp
memory/1152-146-0x0000000001010000-0x0000000001019000-memory.dmp
memory/1152-160-0x0000000001020000-0x0000000001025000-memory.dmp
memory/1292-186-0x0000000000A30000-0x0000000000A35000-memory.dmp
memory/1292-170-0x0000000000A30000-0x0000000000A35000-memory.dmp
memory/1292-171-0x0000000000A20000-0x0000000000A29000-memory.dmp
memory/1376-135-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1376-132-0x0000000000633000-0x0000000000649000-memory.dmp
memory/1376-133-0x0000000000030000-0x0000000000039000-memory.dmp
memory/1376-134-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2176-169-0x0000000000870000-0x0000000000897000-memory.dmp
memory/2176-168-0x00000000008A0000-0x00000000008C2000-memory.dmp
memory/2176-185-0x00000000008A0000-0x00000000008C2000-memory.dmp
memory/2236-143-0x00000000005F0000-0x00000000005F9000-memory.dmp
memory/2236-182-0x00000000005F0000-0x00000000005F9000-memory.dmp
memory/2236-145-0x00000000005E0000-0x00000000005EF000-memory.dmp
memory/3004-162-0x0000000000F00000-0x000000000130E000-memory.dmp
memory/3004-148-0x0000000000F00000-0x000000000130E000-memory.dmp
memory/3460-176-0x0000000000C10000-0x0000000000C17000-memory.dmp
memory/3460-177-0x0000000000C00000-0x0000000000C0D000-memory.dmp
memory/3460-188-0x0000000000C10000-0x0000000000C17000-memory.dmp
memory/3536-184-0x0000000000BD0000-0x0000000000BD6000-memory.dmp
memory/3536-166-0x0000000000BD0000-0x0000000000BD6000-memory.dmp
memory/3536-164-0x0000000000BC0000-0x0000000000BCC000-memory.dmp
memory/4084-180-0x0000000001240000-0x000000000124B000-memory.dmp
memory/4084-179-0x0000000001250000-0x0000000001258000-memory.dmp
memory/4084-189-0x0000000001250000-0x0000000001258000-memory.dmp
memory/4336-163-0x00000000005E0000-0x0000000000A41000-memory.dmp