Resubmissions

03-07-2024 22:59

240703-2yn7wszhlp 10

03-07-2024 16:13

240703-tn93lsyglf 10

03-07-2024 16:11

240703-tm84xsyfma 10

10-05-2024 16:25

240510-tw1h5shh47 10

24-08-2023 11:16

230824-nda8msdf8z 10

Analysis

  • max time kernel
    120s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-05-2024 16:25

General

  • Target

    Archive.zip__ccacaxs2tbz2t6ob3e.exe

  • Size

    430KB

  • MD5

    a3cab1a43ff58b41f61f8ea32319386b

  • SHA1

    94689e1a9e1503f1082b23e6d5984d4587f3b9ec

  • SHA256

    005d3b2b78fa134092a43e53112e5c8518f14cf66e57e6a3cc723219120baba6

  • SHA512

    8f084a866c608833c3bf95b528927d9c05e8d4afcd8a52c3434d45c8ba8220c25d2f09e00aade708bbbc83b4edea60baf826750c529e8e9e05b1242c56d0198d

  • SSDEEP

    6144:vU9Q9tD5WuDQa4t3BMgLkzvCOnYxcEaSAOPou8BWinO8DR:8Q9tD5WyQlBBVAnYxRhr8DR

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe
    "C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Users\Admin\AppData\Local\Temp\5A9E.tmp.exe
      C:\Users\Admin\AppData\Local\Temp\5A9E.tmp.exe
      2⤵
      • Executes dropped EXE
      PID:884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    5ab8e92e4db097ecd458fc672eed7c24

    SHA1

    6a6f321b5d6283930ba0c71db24773d01cd4c86d

    SHA256

    d089f8ea6268280b1bb7ebdb9114e2d29cd3ac7ff92d652a46d48907cad8a96b

    SHA512

    751485f7b3db53bcfd58d6f73f083dd0d34d32a8743242831fa6dcc6a47b086bcb69a68c50a2f249c838dae4d38745c7eb9ea2b18dcc3865821ed8a491ae71ba

  • C:\Users\Admin\AppData\Local\Temp\5A9E.tmp.exe

    Filesize

    149KB

    MD5

    060404f288040959694844afbd102966

    SHA1

    e0525e9ef6713fd7f269a669335ce3ddaab4b6a1

    SHA256

    40517e822f3442a2f389a50e905f40a6a2c4930077c865e3ea7b1929405f760a

    SHA512

    ddf8c53e1e1888084fa5422f297cc3ba9d97f7576c36f6b633ce67ca789127f7e259e9fb374fcbced66f883dadde0717d81ecce9776770bf07d8cf3b94b1a43f

  • C:\Users\Admin\AppData\Local\Temp\Tar5FC4.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a