Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2023 07:51

General

  • Target

    cf72f08cc5621da876e82ddf3f607024f3752ad234560f5211a4f9261e784262.exe

  • Size

    1.3MB

  • MD5

    760c5027fb9eaeed3b39726aced52f54

  • SHA1

    8dd3c44371aded71f680b541813d6b6d20bf4fd5

  • SHA256

    cf72f08cc5621da876e82ddf3f607024f3752ad234560f5211a4f9261e784262

  • SHA512

    7dfee5a6f41a69801cbd0e6cba9e18b1ebabef75753bbe71f19a498176e81d5156a607e143072a0ccac4a4341b64e2a9c226abeecefdcc757afbcff291c2c26f

  • SSDEEP

    24576:AjHPO2Okx2LFKjHPOnOkx2LFFJbKkKF/eMNPj/t7te:ATG4QQTGHQR9KFeM8

Score
10/10
upx

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in System32 directory 23 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 2 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies system certificate store 2 TTPs 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: LoadsDriver 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:424
      • C:\Windows\Logs\wermgr.exe
        "C:\Windows\Logs\wermgr.exe"
        2⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2660
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
      • Suspicious use of NtCreateUserProcessOtherParentProcess
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1228
      • C:\Users\Admin\AppData\Local\Temp\cf72f08cc5621da876e82ddf3f607024f3752ad234560f5211a4f9261e784262.exe
        "C:\Users\Admin\AppData\Local\Temp\cf72f08cc5621da876e82ddf3f607024f3752ad234560f5211a4f9261e784262.exe"
        2⤵
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2208
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Users\Admin\AppData\Local\Temp\cf72f08cc5621da876e82ddf3f607024f3752ad234560f5211a4f9261e784262.exe"
          3⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:2576
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 1
            4⤵
            • Delays execution with timeout.exe
            PID:2564
    • C:\Windows\Syswow64\858df05e
      C:\Windows\Syswow64\858df05e
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2240
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Windows\Syswow64\858df05e"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:676
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 1
          3⤵
          • Delays execution with timeout.exe
          PID:376

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\a18254e3.tmp

      Filesize

      11.6MB

      MD5

      5244c87dbafa1f764b258766005dea73

      SHA1

      84cb8b4fb3e0910cfecfb31b6fa54c16d940e703

      SHA256

      077035f93ddc3ac5a8b5631d43826baf7722256eb1c4716b3c2567f07379bc40

      SHA512

      54d64d32e73e2752cdf9a110db17ad64574eb072df0ed0dc34a7e4bc469c03aa79ef7d45465e279ef85d5fc6b33a1b750b181476cdea7ea98898ddba9aa60438

    • C:\Windows\Logs\wermgr.exe

      Filesize

      49KB

      MD5

      41df7355a5a907e2c1d7804ec028965d

      SHA1

      453263d230c6317eb4a2eb3aceeec1bbcf5e153d

      SHA256

      207bfec939e7c017c4704ba76172ee2c954f485ba593bc1bc8c7666e78251861

      SHA512

      59c9d69d3942543af4f387137226516adec1a4304bd5696c6c1d338f9e5f40d136450907351cce018563df1358e06a792005167f5c08c689df32d809c4cebdcf

    • C:\Windows\SysWOW64\858df05e

      Filesize

      1.3MB

      MD5

      d80a25d0012fbd0cd6ceb85b6141418b

      SHA1

      77e524e2b8f9ffb604fd89bb8acea284a1e2054d

      SHA256

      ea1a93df79319a55f2dd8ec73ea9b3413ce7dcb7d8208bef8506896f1bd8276f

      SHA512

      fc42791250a4802b6ac4f6f37d38e8343f3aadf23d01436b7c9069df2b0d3e49cf8e22f2fcabb9187563c4686a07388a3ce739b0aedf36c126a7f7bf29bb894c

    • C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

      Filesize

      61KB

      MD5

      f3441b8572aae8801c04f3060b550443

      SHA1

      4ef0a35436125d6821831ef36c28ffaf196cda15

      SHA256

      6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

      SHA512

      5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

    • C:\Windows\Syswow64\858df05e

      Filesize

      1.3MB

      MD5

      d80a25d0012fbd0cd6ceb85b6141418b

      SHA1

      77e524e2b8f9ffb604fd89bb8acea284a1e2054d

      SHA256

      ea1a93df79319a55f2dd8ec73ea9b3413ce7dcb7d8208bef8506896f1bd8276f

      SHA512

      fc42791250a4802b6ac4f6f37d38e8343f3aadf23d01436b7c9069df2b0d3e49cf8e22f2fcabb9187563c4686a07388a3ce739b0aedf36c126a7f7bf29bb894c

    • \Windows\Logs\wermgr.exe

      Filesize

      49KB

      MD5

      41df7355a5a907e2c1d7804ec028965d

      SHA1

      453263d230c6317eb4a2eb3aceeec1bbcf5e153d

      SHA256

      207bfec939e7c017c4704ba76172ee2c954f485ba593bc1bc8c7666e78251861

      SHA512

      59c9d69d3942543af4f387137226516adec1a4304bd5696c6c1d338f9e5f40d136450907351cce018563df1358e06a792005167f5c08c689df32d809c4cebdcf

    • memory/424-47-0x00000000008F0000-0x0000000000918000-memory.dmp

      Filesize

      160KB

    • memory/424-45-0x0000000000860000-0x0000000000863000-memory.dmp

      Filesize

      12KB

    • memory/1228-25-0x0000000006A80000-0x0000000006B79000-memory.dmp

      Filesize

      996KB

    • memory/1228-104-0x0000000006A80000-0x0000000006B79000-memory.dmp

      Filesize

      996KB

    • memory/1228-24-0x00000000029D0000-0x00000000029D3000-memory.dmp

      Filesize

      12KB

    • memory/1228-23-0x00000000029D0000-0x00000000029D3000-memory.dmp

      Filesize

      12KB

    • memory/1228-76-0x0000000006A80000-0x0000000006B79000-memory.dmp

      Filesize

      996KB

    • memory/1228-21-0x00000000029D0000-0x00000000029D3000-memory.dmp

      Filesize

      12KB

    • memory/2208-49-0x0000000001220000-0x00000000012A9000-memory.dmp

      Filesize

      548KB

    • memory/2208-0-0x0000000001220000-0x00000000012A9000-memory.dmp

      Filesize

      548KB

    • memory/2208-26-0x0000000001220000-0x00000000012A9000-memory.dmp

      Filesize

      548KB

    • memory/2240-106-0x0000000000D40000-0x0000000000DC9000-memory.dmp

      Filesize

      548KB

    • memory/2240-3-0x0000000000D40000-0x0000000000DC9000-memory.dmp

      Filesize

      548KB

    • memory/2240-39-0x0000000000D40000-0x0000000000DC9000-memory.dmp

      Filesize

      548KB

    • memory/2240-56-0x0000000000D40000-0x0000000000DC9000-memory.dmp

      Filesize

      548KB

    • memory/2660-30-0x0000000000060000-0x0000000000123000-memory.dmp

      Filesize

      780KB

    • memory/2660-109-0x0000000001D30000-0x0000000001DFB000-memory.dmp

      Filesize

      812KB

    • memory/2660-36-0x00000000001E0000-0x00000000001E3000-memory.dmp

      Filesize

      12KB

    • memory/2660-105-0x00000000008F0000-0x0000000000918000-memory.dmp

      Filesize

      160KB

    • memory/2660-32-0x00000000001B0000-0x00000000001B1000-memory.dmp

      Filesize

      4KB

    • memory/2660-107-0x0000000001D30000-0x0000000001DFB000-memory.dmp

      Filesize

      812KB

    • memory/2660-43-0x000007FEBE160000-0x000007FEBE170000-memory.dmp

      Filesize

      64KB

    • memory/2660-102-0x0000000037040000-0x0000000037050000-memory.dmp

      Filesize

      64KB

    • memory/2660-110-0x0000000001E80000-0x0000000001E81000-memory.dmp

      Filesize

      4KB

    • memory/2660-111-0x0000000004670000-0x0000000004835000-memory.dmp

      Filesize

      1.8MB

    • memory/2660-112-0x0000000004670000-0x0000000004835000-memory.dmp

      Filesize

      1.8MB

    • memory/2660-113-0x0000000001E90000-0x0000000001E91000-memory.dmp

      Filesize

      4KB

    • memory/2660-114-0x0000000001E90000-0x0000000001E91000-memory.dmp

      Filesize

      4KB

    • memory/2660-115-0x0000000004670000-0x0000000004835000-memory.dmp

      Filesize

      1.8MB

    • memory/2660-42-0x0000000001D30000-0x0000000001DFB000-memory.dmp

      Filesize

      812KB

    • memory/2660-123-0x0000000004670000-0x0000000004835000-memory.dmp

      Filesize

      1.8MB