Analysis

  • max time kernel
    132s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-06-2024 13:48

General

  • Target

    584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe

  • Size

    7KB

  • MD5

    e0354350b177887076f4c89567e0af8d

  • SHA1

    999fc3514c83f5b3bfaf899b656a194f7f60ed05

  • SHA256

    584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032

  • SHA512

    5972d529569ad3aecd8a02de1b2150a3901e2fe09aa5223956d4fd9f77ec9acd308d938c5748b8e38b6090484d0ec6f288f2295f67a6fcc12b0dc770620600fd

  • SSDEEP

    96:nGJKj1y2oPbML8RcyuHazDvDId4IBmc+TMsa+aIVzNt:G4jU2o48RVHA4U0Zv

Malware Config

Extracted

Family

purecrypter

C2

https://www1.militarydefensenow.com/Stay/Vdopcuygit.vdf

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe
    "C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3380
    • C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe
      "C:\Users\Admin\AppData\Local\Temp\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:5060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\584c91693287a0d6c66f27a8c0f1841aad3368bc48b9d36b1088548f9f370032.exe.log

    Filesize

    1KB

    MD5

    f3eb81974dc5933681e933f07209ff5f

    SHA1

    7af8cae0f1d03e82daaf784df9886705685baac7

    SHA256

    e82069884dd428bd6a1c67fe00c5fa56f9c4d62b538b694694a699588f1f4ab2

    SHA512

    d9aa3871dffb76c8a73a7940fa03bbc9b65cf575cbd07f7c1fbf490cb0f3d670415eaef0bf79e34689f61ab3cdfbb104efdef004becc12e54b501f02f948aaff

  • C:\Users\Admin\AppData\Local\Temp\Nqamfp.tmpdb

    Filesize

    152KB

    MD5

    73bd1e15afb04648c24593e8ba13e983

    SHA1

    4dd85ca46fcdf9d93f6b324f8bb0b5bb512a1b91

    SHA256

    aab0b201f392fef9fdff09e56a9d0ac33d0f68be95da270e6dab89bb1f971d8b

    SHA512

    6eb58fb41691894045569085bd64a83acd62277575ab002cf73d729bda4b6d43c36643a5fa336342e87a493326337ed43b8e5eaeae32f53210714699cb8dfac7

  • C:\Users\Admin\AppData\Local\Temp\Nxsgrb.tmpdb

    Filesize

    124KB

    MD5

    9618e15b04a4ddb39ed6c496575f6f95

    SHA1

    1c28f8750e5555776b3c80b187c5d15a443a7412

    SHA256

    a4cd72e529e60b5f74c50e4e5b159efaf80625f23534dd15a28203760b8b28ab

    SHA512

    f802582aa7510f6b950e3343b0560ffa9037c6d22373a6a33513637ab0f8e60ed23294a13ad8890935b02c64830b5232ba9f60d0c0fe90df02b5da30ecd7fa26

  • memory/3380-0-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

    Filesize

    4KB

  • memory/3380-1-0x0000000000510000-0x0000000000518000-memory.dmp

    Filesize

    32KB

  • memory/3380-2-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3380-3-0x00000000073D0000-0x00000000076BC000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-4-0x0000000007C70000-0x0000000008214000-memory.dmp

    Filesize

    5.6MB

  • memory/3380-5-0x00000000078C0000-0x0000000007952000-memory.dmp

    Filesize

    584KB

  • memory/3380-11-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-13-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-17-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-23-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-29-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-37-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-41-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-53-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-51-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-49-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-47-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-45-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-43-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-39-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-35-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-33-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-31-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-27-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-25-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-21-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-19-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-15-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-9-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-7-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-6-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-69-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-67-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-65-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-63-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-61-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-59-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-57-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-55-0x00000000073D0000-0x00000000076B6000-memory.dmp

    Filesize

    2.9MB

  • memory/3380-4892-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3380-4894-0x00000000054B0000-0x00000000054FC000-memory.dmp

    Filesize

    304KB

  • memory/3380-4893-0x0000000006000000-0x0000000006128000-memory.dmp

    Filesize

    1.2MB

  • memory/3380-4895-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

    Filesize

    4KB

  • memory/3380-4896-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3380-4897-0x0000000000A50000-0x0000000000AA4000-memory.dmp

    Filesize

    336KB

  • memory/3380-4903-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB

  • memory/5060-4904-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB

  • memory/5060-4905-0x0000000004E60000-0x0000000004F76000-memory.dmp

    Filesize

    1.1MB

  • memory/5060-4902-0x00000000007B0000-0x0000000000888000-memory.dmp

    Filesize

    864KB

  • memory/5060-7206-0x0000000005120000-0x00000000051BE000-memory.dmp

    Filesize

    632KB

  • memory/5060-7207-0x00000000057B0000-0x00000000057DC000-memory.dmp

    Filesize

    176KB

  • memory/5060-7208-0x0000000005870000-0x00000000058D6000-memory.dmp

    Filesize

    408KB

  • memory/5060-7209-0x0000000006070000-0x00000000060EA000-memory.dmp

    Filesize

    488KB

  • memory/5060-7262-0x0000000074A10000-0x00000000751C0000-memory.dmp

    Filesize

    7.7MB