811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9

General
Target

811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe

Filesize

350KB

Completed

25-01-2022 22:59

Score
10/10
MD5

8c9e5e9823162d0ae2a5e97854d33663

SHA1

4ce2d87583186c866b3482eb3dcf8320dc684cef

SHA256

811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9

Malware Config

Extracted

Family arkei
Botnet Default
C2

http://coin-file-file-19.com/tratata.php
Signatures 11

Filter: none

Collection
Credential Access
Discovery
  • Arkei

    Description

    Arkei is an infostealer written in C++.

    Tags

  • Arkei Stealer Payload

    Tags

    Reported IOCs

    resourceyara_rule
    behavioral1/memory/2500-116-0x00000000004E0000-0x000000000058E000-memory.dmpfamily_arkei
    behavioral1/memory/2500-117-0x0000000000400000-0x000000000045E000-memory.dmpfamily_arkei
  • Downloads MZ/PE file
  • Loads dropped DLL
    811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe

    Reported IOCs

    pidprocess
    2500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
    2500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
    2500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
  • Reads user/profile data of web browsers

    Description

    Infostealers often target stored browser data, which can include saved credentials etc.

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Accesses cryptocurrency files/wallets, possible credential harvesting

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Checks installed software on the system

    Description

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    Tags

    TTPs

    Query Registry
  • Enumerates physical storage devices

    Description

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

    TTPs

    System Information Discovery
  • Checks processor information in registry
    811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe

    Description

    Processor information is often read in order to detect sandboxing environments.

    TTPs

    Query RegistrySystem Information Discovery

    Reported IOCs

    descriptioniocprocess
    Key opened\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
    Key value queried\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
  • Delays execution with timeout.exe
    timeout.exe

    Tags

    Reported IOCs

    pidprocess
    512timeout.exe
  • Suspicious use of WriteProcessMemory
    811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.execmd.exe

    Reported IOCs

    descriptionpidprocesstarget process
    PID 2500 wrote to memory of 33122500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.execmd.exe
    PID 2500 wrote to memory of 33122500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.execmd.exe
    PID 2500 wrote to memory of 33122500811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.execmd.exe
    PID 3312 wrote to memory of 5123312cmd.exetimeout.exe
    PID 3312 wrote to memory of 5123312cmd.exetimeout.exe
    PID 3312 wrote to memory of 5123312cmd.exetimeout.exe
Processes 3
  • C:\Users\Admin\AppData\Local\Temp\811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe
    "C:\Users\Admin\AppData\Local\Temp\811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe"
    Loads dropped DLL
    Checks processor information in registry
    Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\811c11ae0f3eed20db631e3896e8a5e9ac05c8b941644f7adcfbaa74c27fe2a9.exe" & exit
      Suspicious use of WriteProcessMemory
      PID:3312
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        Delays execution with timeout.exe
        PID:512
Network
MITRE ATT&CK Matrix
Collection
Command and Control
    Credential Access
    Defense Evasion
      Discovery
      Execution
        Exfiltration
          Impact
            Initial Access
              Lateral Movement
                Persistence
                  Privilege Escalation
                    Replay Monitor
                    00:00 00:00
                    Downloads

                    • \ProgramData\mozglue.dll

                      MD5

                      8f73c08a9660691143661bf7332c3c27

                      SHA1

                      37fa65dd737c50fda710fdbde89e51374d0c204a

                      SHA256

                      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

                      SHA512

                      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

                      Download Submit

                    • \ProgramData\nss3.dll

                      MD5

                      bfac4e3c5908856ba17d41edcd455a51

                      SHA1

                      8eec7e888767aa9e4cca8ff246eb2aacb9170428

                      SHA256

                      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

                      SHA512

                      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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                    • \ProgramData\sqlite3.dll

                      MD5

                      e477a96c8f2b18d6b5c27bde49c990bf

                      SHA1

                      e980c9bf41330d1e5bd04556db4646a0210f7409

                      SHA256

                      16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

                      SHA512

                      335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

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                    • memory/2500-115-0x00000000004A0000-0x00000000004B1000-memory.dmp

                      Download

                    • memory/2500-116-0x00000000004E0000-0x000000000058E000-memory.dmp

                      Download

                    • memory/2500-117-0x0000000000400000-0x000000000045E000-memory.dmp

                      Download