Analysis

  • max time kernel
    148s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-03-2023 14:34

General

  • Target

    23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1.exe

  • Size

    6.8MB

  • MD5

    ca6b1b3b00d1bdccb7cc73255bc97329

  • SHA1

    88923d5bf5f29cab5fe3ac66459bc94d709b06a1

  • SHA256

    23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1

  • SHA512

    fd92162cb9fc5f0a22e25b17cf9386034121af061b821531823292778978f7f44c2e51a7eadc07e902560ec8cffd389a40dd32649ffe3782fbf956dc293224b3

  • SSDEEP

    196608:V09b1yxhIsD1xLyVUZIBZjUQHQ8dq9XvjUQ:V09bsBvy2GjeV

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 19 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1.exe
    "C:\Users\Admin\AppData\Local\Temp\23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1.exe"
    1⤵
    • Maps connected drives based on registry
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c C:\Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1104
      • C:\Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
        C:\Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
          "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
          4⤵
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          PID:1452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\23e3550cb43e9362251d56005e3c961c426d8e065ff2f2123f457e217415f6c1.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Windows\SysWOW64\timeout.exe
        timeout -t 5
        3⤵
        • Delays execution with timeout.exe
        PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\656E.tmp
    Filesize

    32B

    MD5

    9007aba6f5ee53a482249147787479b2

    SHA1

    4ac87bdc6d0eb472030d4f70d9aa265d7fdcb730

    SHA256

    9e1905de40a93ef8708e59f3861320b915c8cd029c7614d92cb526407d4cca0f

    SHA512

    ff645e2a70960ce438921c2dd1eaec811facf54a865b5977b9f8d1327ac2a499a99d42df80b9cb75ff8b4e7746194d4748b49b27cda17832c59d90091b5584fb

  • C:\Users\Admin\AppData\Local\Temp\662D.tmp
    Filesize

    71KB

    MD5

    dfeffc3924409d9c9d3c8cae05be922b

    SHA1

    a89046cbf54c00e17ff0a5f3e1a8f01eb399bce4

    SHA256

    06ea3ad1c1c1067bfdfaa5ad8a91632fac6cad9776ded85fa65d3b6181d89be6

    SHA512

    d9614ecf528a2bf48cafe99a4c54d5c9f3656d628001fbf575d367d5ad8008cf30a58a7b3d9489d8534064442df89a7263df4a91d0863dcd6cc33574c576da33

  • C:\Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
    Filesize

    2.7MB

    MD5

    c958ae268c1966cdce74530648a61e99

    SHA1

    704274ad1b508f7dcc2839519030ac9ff6f66a20

    SHA256

    cabce825f470146722193da1daaf7c14930ccc251362656a93885fdc4a51f245

    SHA512

    ee582850228d0f608e41d626b2c2d74bc12e3ff15e10ed09da4ae128cd1717dfcfcb8b873e3abb1858ed959a327214e2cbf1d92c8bb1ebaf11159982db6c2cae

  • C:\Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
    Filesize

    2.7MB

    MD5

    c958ae268c1966cdce74530648a61e99

    SHA1

    704274ad1b508f7dcc2839519030ac9ff6f66a20

    SHA256

    cabce825f470146722193da1daaf7c14930ccc251362656a93885fdc4a51f245

    SHA512

    ee582850228d0f608e41d626b2c2d74bc12e3ff15e10ed09da4ae128cd1717dfcfcb8b873e3abb1858ed959a327214e2cbf1d92c8bb1ebaf11159982db6c2cae

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    Filesize

    2.7MB

    MD5

    c958ae268c1966cdce74530648a61e99

    SHA1

    704274ad1b508f7dcc2839519030ac9ff6f66a20

    SHA256

    cabce825f470146722193da1daaf7c14930ccc251362656a93885fdc4a51f245

    SHA512

    ee582850228d0f608e41d626b2c2d74bc12e3ff15e10ed09da4ae128cd1717dfcfcb8b873e3abb1858ed959a327214e2cbf1d92c8bb1ebaf11159982db6c2cae

  • \Users\Admin\AppData\Roaming\44B0BD7DE16453EE\uptorn.exe
    Filesize

    2.7MB

    MD5

    c958ae268c1966cdce74530648a61e99

    SHA1

    704274ad1b508f7dcc2839519030ac9ff6f66a20

    SHA256

    cabce825f470146722193da1daaf7c14930ccc251362656a93885fdc4a51f245

    SHA512

    ee582850228d0f608e41d626b2c2d74bc12e3ff15e10ed09da4ae128cd1717dfcfcb8b873e3abb1858ed959a327214e2cbf1d92c8bb1ebaf11159982db6c2cae

  • \Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    Filesize

    2.7MB

    MD5

    c958ae268c1966cdce74530648a61e99

    SHA1

    704274ad1b508f7dcc2839519030ac9ff6f66a20

    SHA256

    cabce825f470146722193da1daaf7c14930ccc251362656a93885fdc4a51f245

    SHA512

    ee582850228d0f608e41d626b2c2d74bc12e3ff15e10ed09da4ae128cd1717dfcfcb8b873e3abb1858ed959a327214e2cbf1d92c8bb1ebaf11159982db6c2cae

  • memory/924-154-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-163-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-158-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-157-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-156-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-155-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/924-153-0x0000000000990000-0x000000000107B000-memory.dmp
    Filesize

    6.9MB

  • memory/1104-152-0x0000000001FC0000-0x00000000026AB000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-165-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-171-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-170-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-169-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-168-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-167-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1452-166-0x0000000000C50000-0x000000000133B000-memory.dmp
    Filesize

    6.9MB

  • memory/1684-58-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/1684-62-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/1684-70-0x0000000000280000-0x0000000000281000-memory.dmp
    Filesize

    4KB

  • memory/1684-71-0x0000000000280000-0x0000000000281000-memory.dmp
    Filesize

    4KB

  • memory/1684-67-0x0000000000270000-0x0000000000271000-memory.dmp
    Filesize

    4KB

  • memory/1684-68-0x0000000000270000-0x0000000000271000-memory.dmp
    Filesize

    4KB

  • memory/1684-65-0x0000000000260000-0x0000000000261000-memory.dmp
    Filesize

    4KB

  • memory/1684-64-0x0000000000260000-0x0000000000261000-memory.dmp
    Filesize

    4KB

  • memory/1684-54-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/1684-61-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/1684-56-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/1684-55-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/1684-74-0x0000000000290000-0x0000000000291000-memory.dmp
    Filesize

    4KB

  • memory/1684-57-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/1684-59-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/1684-60-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/1684-75-0x0000000000400000-0x0000000000F02000-memory.dmp
    Filesize

    11.0MB

  • memory/1684-73-0x0000000000290000-0x0000000000291000-memory.dmp
    Filesize

    4KB