Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    29-04-2021 05:06

General

  • Target

    EXTRACTOSERFINANZA718365418101786154346661555.exe

  • Size

    1.8MB

  • MD5

    4b87651766b45ec78c2c9ea9a6951e5c

  • SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

  • SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

  • SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

Score
10/10

Malware Config

Extracted

Family

remcos

C2

databasepropersonombrecomercialideasearchwords.services:3521

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 18 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Delays execution with timeout.exe 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA718365418101786154346661555.exe
    "C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA718365418101786154346661555.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1864
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1360
    • C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA718365418101786154346661555.exe
      "C:\Users\Admin\AppData\Local\Temp\EXTRACTOSERFINANZA718365418101786154346661555.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1288
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:652
          • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
            C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:600
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1012
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:1376
            • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
              "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetWindowsHookEx
              PID:1664
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 600 -s 924
              6⤵
              • Loads dropped DLL
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:1672
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 884
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1416

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs
    MD5

    a39af763b1c09ead3c98a6a615f377fe

    SHA1

    9bd3d39c89e47fe7072270ecc80b810103235c03

    SHA256

    a3930d7535eb768523ee52bbe69f13f857a0ae0f982d7bfc354d802f21010f8f

    SHA512

    3ed8e33ac95fd2536286b4afb2ed2a082bb5f98843478262b32263a14a5dbe0425de7b8d9662a5e482b207ebf8484ace8009ecd1881a6f6f8b0ccf3b0fdfe5da

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • \Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
    MD5

    4b87651766b45ec78c2c9ea9a6951e5c

    SHA1

    6fd91fe21ba350f55bd6f00d389986084d4e3852

    SHA256

    6993ffac6e8c4020e152ce6ba165cf3efb429908340d2d9c02812dffc019cf0a

    SHA512

    f4e642008a9af3a91b55727636c0155dde65db1d811c776fd2ad7548ae18a52c5642ae6cfab04b9903bd642a10090ea27fe516bd94ddd9fed8af7b5b09c0fb46

  • memory/600-80-0x0000000001110000-0x0000000001111000-memory.dmp
    Filesize

    4KB

  • memory/600-78-0x0000000000000000-mapping.dmp
  • memory/600-85-0x0000000004E50000-0x0000000004E51000-memory.dmp
    Filesize

    4KB

  • memory/652-75-0x0000000000000000-mapping.dmp
  • memory/980-60-0x0000000000910000-0x0000000000911000-memory.dmp
    Filesize

    4KB

  • memory/980-65-0x00000000004E0000-0x00000000004E1000-memory.dmp
    Filesize

    4KB

  • memory/980-62-0x00000000001F0000-0x000000000022F000-memory.dmp
    Filesize

    252KB

  • memory/1012-83-0x0000000000000000-mapping.dmp
  • memory/1288-66-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1288-73-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1288-68-0x0000000075FF1000-0x0000000075FF3000-memory.dmp
    Filesize

    8KB

  • memory/1288-67-0x0000000000413FA4-mapping.dmp
  • memory/1360-64-0x0000000000000000-mapping.dmp
  • memory/1376-84-0x0000000000000000-mapping.dmp
  • memory/1416-74-0x0000000002040000-0x000000000221C000-memory.dmp
    Filesize

    1.9MB

  • memory/1416-70-0x0000000000000000-mapping.dmp
  • memory/1608-69-0x0000000000000000-mapping.dmp
  • memory/1664-87-0x0000000000413FA4-mapping.dmp
  • memory/1664-96-0x0000000000400000-0x0000000000422000-memory.dmp
    Filesize

    136KB

  • memory/1672-90-0x0000000000000000-mapping.dmp
  • memory/1672-97-0x0000000001E30000-0x0000000001E31000-memory.dmp
    Filesize

    4KB

  • memory/1864-63-0x0000000000000000-mapping.dmp