Analysis

  • max time kernel
    12s
  • max time network
    146s
  • platform
    android_x86
  • resource
    android-x86-arm-20240611-en
  • resource tags

    androidarch:armarch:x86image:android-x86-arm-20240611-enlocale:en-usos:android-9-x86system
  • submitted
    11-06-2024 18:27

General

  • Target

    9f236e0d39f042b69f4e493b86061ee1_JaffaCakes118.apk

  • Size

    13.5MB

  • MD5

    9f236e0d39f042b69f4e493b86061ee1

  • SHA1

    4a10ce8b471fbb2f783d269d7ae5a2581fc7dc48

  • SHA256

    85040f1ca529f8e8b40f465bb9246524c468d9847a2d615944530107d80cbb66

  • SHA512

    657b6979fa8448da1d8f11d7e3b4ba065354bb2664fb11cc3437cb624760d1ddac549b09331a88fe2ee9b482a5d5b74563c99363eb409d70eba39f3c16c6b4af

  • SSDEEP

    393216:QJw8mGyA+tslOmaJ2yvIblwRhj2YuBj13SphzWp:j86tsYrUlWj2Yud13SL6p

Malware Config

Signatures

  • Loads dropped Dex/Jar 1 TTPs 6 IoCs

    Runs executable file dropped to the device during analysis.

  • Queries information about running processes on the device 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to collect information about running processes on the device.

  • Domain associated with commercial stalkerware software, includes indicators from echap.eu.org 1 IoCs
  • Queries information about active data network 1 TTPs 1 IoCs
  • Queries information about the current Wi-Fi connection 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to collect information about the current Wi-Fi connection.

  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

Processes

  • com.biquge.book.noverls
    1⤵
    • Loads dropped Dex/Jar
    • Queries information about running processes on the device
    • Queries information about active data network
    • Queries information about the current Wi-Fi connection
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4302
    • /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/data/com.biquge.book.noverls/.jiagu/tmp.dex --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/data/com.biquge.book.noverls/.jiagu/oat/x86/tmp.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4366

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/com.biquge.book.noverls/.00000000000/A3AEECD8.dex

    Filesize

    63KB

    MD5

    ed73a80eb949bacc52428b8d5a087fa5

    SHA1

    07e973549a2cee61ffeeb6439abc419cd8a489a9

    SHA256

    f0ead1ad60e0cc310c1a40685c28fc7a69aa346604552816c51dd3c1718a1e76

    SHA512

    4bc26c18ca3a2edfe38ca1e14ad1e1415268b4a69cdff3c0f8e2b8fa910c67c2e4bc4f32c21274e586e8e139122ea3dbde7ec507c4722b4a9a778ee2598090b8

  • /data/data/com.biquge.book.noverls/.00000000000/A3AEECD8.dex

    Filesize

    63KB

    MD5

    5061e4948844f7d366972ac8005e9f13

    SHA1

    a2b79a1c79afb095ddebf0f16a1f9db64482bcaf

    SHA256

    3aa6caecfcd101531539147e01382bc530b4fdc61e98937d63cc4648793c6a45

    SHA512

    223d18ce248912df18cdea3c8e864ea5e6ec058ca42cc5fde738188c54abcd260d7f24ac53d4987d3e32f4ae3e1e40e01354054d035bb100eef51b2d695f5299

  • /data/data/com.biquge.book.noverls/.jiagu/classes.dex

    Filesize

    6.1MB

    MD5

    a72d48bc8cf681f0292876a04f65cb5c

    SHA1

    45f2a6ba73846cfec59b0729d9061cd5d28876e1

    SHA256

    355cd559da64a3490374b1283af1e486f7c68b61c8136ff9c592d98a560d8f4a

    SHA512

    6868b085bec16b6f6db6d73c7801c815e8cdb455432f956c7b66aedd0b4ba494575458ecaf96e39a74e095e25fde88803f3f945459bfe3d9cd6a6cca4f5949c3

  • /data/data/com.biquge.book.noverls/.jiagu/classes.dex!classes2.dex

    Filesize

    5.0MB

    MD5

    e3e6b819aeeba9f228827945c5bbd4b6

    SHA1

    647cfd1a6f4e1ab6c8c378f79b80afacd97b28c4

    SHA256

    6ac6b69f1b8d8a9d7668a1689ff40248500149bb8841356b3f15eb4102c00de8

    SHA512

    9c31599e904ab3cbbf711af04e46f48cb578229b3643e3bfe7d1a1f7d8f295dd85a0a1d4cf6808cab6129fa4d26c441d60b90b8796905de02145f8e557d8ec1a

  • /data/data/com.biquge.book.noverls/.jiagu/libjiagu.so

    Filesize

    558KB

    MD5

    98736de515958ae37ae93a0a0e997098

    SHA1

    72d0f9d43f7c9bdc9f19d13834c0872f5652c0f9

    SHA256

    335091dfc73a9f792cb720389c5d94eb6642764a38d70d4b6b7a8afd34038421

    SHA512

    cc4974ce398bf7f4a20160ad30e4c4b5821ff0d7f2cc9fa0aead73ddc036585266edf429add276b53d6db8dd24a344d709469b9c839451deead6b621e70c92cf

  • /data/data/com.biquge.book.noverls/.jiagu/tmp.dex

    Filesize

    284B

    MD5

    f1771b68f5f9b168b79ff59ae2daabe4

    SHA1

    0df6a835559f5c99670214a12700e7d8c28e5a42

    SHA256

    9f8898ce35a47aeafced99ea0d17c33e73037bb2307c7688e50819966f4ae939

    SHA512

    dae27d19727b89bec49398503baa6801640540355688dfabbe689c97545295c2c2d9b0f0dcd7cbc4cfbf701d0c0c3289e647a152f49ff242d1ecc741efe4145d

  • /data/data/com.biquge.book.noverls/app_crashrecord/1002

    Filesize

    235B

    MD5

    019fca57eaadad566355b1066443b432

    SHA1

    591e894fbc490e5e998c90dc54d56184cd84fac6

    SHA256

    cf2f3a5e8b68678658850036a4b991a9144b366bce214267714c7793dde28bdc

    SHA512

    c95a32ab61eb59da187360b7f4b3e1b53bdbddef51d0e3f01b7582d3a799130049cae2f509b7415de6e14339ede6268f7e4aae759c099660700151dc1f59f6a4

  • /data/data/com.biquge.book.noverls/app_crashrecord/1004

    Filesize

    235B

    MD5

    7184c394333157b2a86da0ad821602df

    SHA1

    687365504b0775bfd50987b075ae1acd5ec3e8de

    SHA256

    eb0ce83263f124d1cbc3a7d26c0c0cc57ad34a55b8a23c3ea11b668e3d2ed4ae

    SHA512

    95b7a217eb85b8152e88924464596a762727331d630964b385fc063b2b2ed94287315b77b587d0ef97e507ab3a8e276affed6e744f3f1a25b721dbfa3486cf39

  • /data/data/com.biquge.book.noverls/app_crashrecord/1004

    Filesize

    58B

    MD5

    0d210bfb2a0e1f1b4c082a6a0f79de07

    SHA1

    bb8ed9e364db79d1d9f2fcde3f15091893222faa

    SHA256

    988722c23d78a46021d0e7ca9deee7aa8bb83288269174ffacb7316f381cca1d

    SHA512

    536e9867b0df29b15b789f8949be6ab37fcdeccb9d39ded981da7dc2052c9533d0ec0e6f9a5444132977605d372e1463d91bdde41b528ff2ca3f65ab152325c1

  • /data/data/com.biquge.book.noverls/databases/bugly_db_

    Filesize

    4KB

    MD5

    f2b4b0190b9f384ca885f0c8c9b14700

    SHA1

    934ff2646757b5b6e7f20f6a0aa76c7f995d9361

    SHA256

    0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514

    SHA512

    ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

  • /data/data/com.biquge.book.noverls/databases/bugly_db_-journal

    Filesize

    512B

    MD5

    e17b7065daf79bf1a7c486af88340ca9

    SHA1

    06c60c91ba0b77c53e2a42b9695153b94c2c5478

    SHA256

    40f90f8709e402db7f8263b444dffb98a856ef0178b1f2b0bedc1b630fb85037

    SHA512

    2cad26c971852ab384fe83260f0b7c06be1e491d3d262c0e3057aa148f31c8bba4a21b66ea5ae6e1857e0e23522bac764a87e8736b8455cf654fb4746ad7bab4

  • /data/data/com.biquge.book.noverls/databases/bugly_db_-shm

    Filesize

    28KB

    MD5

    cf845a781c107ec1346e849c9dd1b7e8

    SHA1

    b44ccc7f7d519352422e59ee8b0bdbac881768a7

    SHA256

    18619b678a5c207a971a0aa931604f48162e307c57ecdec450d5f095fe9f32c7

    SHA512

    4802861ea06dc7fb85229a3c8f04e707a084f1ba516510c6f269821b33c8ee4ebf495258fe5bee4850668a5aac1a45f0edf51580da13b7ee160a29d067c67612

  • /data/data/com.biquge.book.noverls/databases/bugly_db_-wal

    Filesize

    68KB

    MD5

    8b45870e6f2b5592ec2f37b81c61d35f

    SHA1

    3d1b8de99b7ac31e4a5597a49153bd4f9a23565e

    SHA256

    7bb4904e0883d0c6ef6307b3d3e5a1c7d3f1aaa04c8946c690daa3ce60f82946

    SHA512

    d4fb87ad75b80c5bf57d009e00533bda9dfa8855fc39f5e4f019809531039abb17b09212ece4143f5a9ea6afdcd96a0d34603e2fada77ffb58aaa9849bba7666

  • /data/data/com.biquge.book.noverls/databases/npth_log.db-journal

    Filesize

    512B

    MD5

    421c6211a0e24f99a120e3172076dea7

    SHA1

    fa144a4eb1fe0714d7c6ecea2d384b8a4f87a637

    SHA256

    dcd9644a5950bdaf6cb9b1e373db8ea318ff042245ea57d85ae55196d51e1ea9

    SHA512

    6bd6676e78cc05fd75e6e301fe666afc934f403d8bb803c1be44ab9e2c211901029d2754f31eb67d62cac4f98dafe527160ec269a0fd343df4c387dc1b6d81ea

  • /data/data/com.biquge.book.noverls/databases/npth_log.db-wal

    Filesize

    32KB

    MD5

    5b5d2ffd3db3bec6c19b2f889f9f9779

    SHA1

    a905c53535e01b44d57ab7aef2a8bb83fa724c30

    SHA256

    40208a78d01e9115b76a80dc5d1bec420b63a36a93636ad4e845ab267e256e4c

    SHA512

    e74c7f860702628bb7ec1067711c816f3ae94ac83c07af5f32825ca8526e94729f247b4633e328232c9066c3751c8369bf82b9045a7a50b7a37d0c317dd3e2f7

  • /data/data/com.biquge.book.noverls/databases/ut.db-journal

    Filesize

    512B

    MD5

    19084d9d32d0f9e902e31d9522865196

    SHA1

    967209aa49e7749a307f1006c3813438e572e893

    SHA256

    41e1a6b938eb317632f8935b7f56540678189c77f2ae546275e05fe2817f9809

    SHA512

    90b27fe8abc2866d88b180c6feb7eea9498573d2b5562338624a4abdee626757ddc42bf2ca7441cb80b00cd919a87114f04ebca6f6e23c39560f688836589d6f

  • /data/data/com.biquge.book.noverls/databases/ut.db-wal

    Filesize

    32KB

    MD5

    21faad36219301c68ebaaa0d184c546d

    SHA1

    3bf30f0d0ef269bdf4156c429b95731a571873b9

    SHA256

    c61ec48ae6cb7808c26fea7291e3bbd74e9b8adad91888492469a009f84b3695

    SHA512

    63b676a3de776ffb05a7c02fffcfcd540c703717ad0da62e1da5e5ae3a1bfb84eff3536f18bf00ca8dfd594ceddde4c3fcde1ebb818b4d42d8849308941881e0

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.ac

    Filesize

    32B

    MD5

    29a95ff4bac131d3cc3b16214f78072b

    SHA1

    d720f80022455de110b1cae8bfdc0cad154af0fc

    SHA256

    5aa2cbb989e2a50a932c15f4253dcb2d62df4a5254818b86d2fc86a84571f789

    SHA512

    d5ce2e0dad1db153a98014f3c97b135aad070ae4d1c67fd0dbf105041b943c9fbcbc44184e319b06395235a0958e8a6e9d3065a00f89ac3e6604af70d2217372

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.ic

    Filesize

    32B

    MD5

    6d978f8ddde91ad8df297d900242337a

    SHA1

    38c90f9c396912301105632cfdc76855dd34b9c4

    SHA256

    3ba16280c0f2dc67f47f584766b15fa261744cbcbaa9969efb1111cc46808969

    SHA512

    40f7bded1b675e51c1eea5984abcf185ab7395d152e9953f59a330ca1884a430ac54ed20a911c9d027236027bc8461c1cc0726d52756bd0317f1cf4986d17bea

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.pk

    Filesize

    32B

    MD5

    65a52c40b03ddc80a44e3443e3a59cc7

    SHA1

    643b489988990f2014b20a84141ec3f0b034b356

    SHA256

    1cae044281a83245e8b95ac821f9da7edff520f0f378fc126dca7736a2c2c221

    SHA512

    408f0a56a1d7a6fcdea61bb8f815dc04147ba5ecea6829ab3d84bf7bfa77c4939874173358c2a1038246d268ab12c4d05e89979ed8878234c3c6ded52c3789b0

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.pk.h

    Filesize

    64B

    MD5

    b11a68dcbfd6f916b8384a40bc487eff

    SHA1

    c94c3419884bdbe37dae2146f1b12179d89f6221

    SHA256

    76af2985a0aab0b03ce5c36dea6b371cae0eaa7a94f24202ebf85469fcae8c4e

    SHA512

    c9b369f259147eb19351d3d366931218ebd51313703da8e53c3c7991b5c3dadf7b5b1052c42a57498679c01ebe6a0db6c0f4a093e249fa92bc48cbe11729cdd7

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.rd

    Filesize

    32B

    MD5

    309645c3acd89c23986608cbefc6fc2e

    SHA1

    ac72d130bdbca6a9b66d207f3e2ac1727399c197

    SHA256

    84470c48068cce14dc1e3db6f8b8b9a37a356b0c1decefc770572d0d58909d7b

    SHA512

    27f6615422c683f37ca08a3f84f29cda9b119bf8ebb3b773da0f3310f4f0df9f6685d114f9bd4d89e886887d435aad6c8ade25d3dfdf3b5ac86c9761a629cc82

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.ri

    Filesize

    314B

    MD5

    8dc5eb0b7943b645978389c6c7915a13

    SHA1

    dd47f6fb466442976c59ac1397e864e40decb7fc

    SHA256

    907398fa581d139b788a855984531f164b73b2abd12497f0c84c490c207b20a8

    SHA512

    e8cb130c93f669cc27fbd996c19316121b7ac239ddac12358cc112e4f46c16883748da57721807c2be850277bc9ec01d2e9639cc0303b5dd48d42e7ec9dcc22e

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.ri

    Filesize

    307B

    MD5

    bef54b5dd3b670e1da74fb207f82ef54

    SHA1

    3d13db9f0dd5e8ebfd73c9535c3fdfca3fb47d8a

    SHA256

    a0b5a2df4aa7b356f1794a74e6534d449857626e4521e9814c343366c62bf4d6

    SHA512

    e2bc27b6edc06b2e36ca6a7045d1e41e1c953faeaaaa94e9c115b6dc9ed5e9cba6e4726b1aa635f53a5aefaf053adb24bbccb044a336e44e337306bad5a48dfc

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.ri

    Filesize

    307B

    MD5

    1039913d44a70ed43cfa00af50078b3f

    SHA1

    9632778e345350f117f401f2bf1a0f240bed27ba

    SHA256

    cc09e072a6396f483cd7e483473dc10b61662bbb664af4a5f689ba23f3e27f15

    SHA512

    00f344ebdfaf50662ba5f2f8d3387cca86043c01cba1be9b8627365a2d25d6eeb33a4aaf2bf6ee2bbc1e807f487f838f5f5269221958e84e038a880b0c3f5953

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.store.report_cf

    Filesize

    32B

    MD5

    d01765cb87b6382cc3b9c4e7dbd52415

    SHA1

    08a1a2041d14ae387a8c38642037da358745f216

    SHA256

    ee2c9a986f022b7078a7662e947f1d117e6f64e17956708878d5a4495c93ef62

    SHA512

    1e5e0c560a25ced84ea6ce15bd8198c53194ee297088f3c267c6a87b9cc7f016e4088937217b1c3b605f9890b51e53f75dd9ca7af4808b7fdc13e5ecb6375470

  • /data/data/com.biquge.book.noverls/files/.jglogs/.jg.store.report_pid

    Filesize

    32B

    MD5

    2603f62e5b9bdac7c1130daf84c09cbe

    SHA1

    a420c898417b7e88ec90e09cefeaea61e78475fa

    SHA256

    7971c79d9da81b94bd65b9c27b9aff1b498b31b0533df2c45e6bb78c5ac91d39

    SHA512

    157251503c070acf5966d796692e9c352bfd363c95a967f215a4d28fdb6dfac2ef7de81e853118300117b6386c83621c3afceaee165c98914b93b5fd25e794a5

  • /data/data/com.biquge.book.noverls/files/.jiagu.lock

    Filesize

    27B

    MD5

    1e5f8fe5ca4f21b394ce7557f2a19b21

    SHA1

    02c961553af4337536c5328c6a060a50c6ce15b8

    SHA256

    7ffc685f1cf2f25175fd1c013c29b0675a55b4b70a6433c20fcc5f8ffd0644c8

    SHA512

    c7c80cd92cb584f0de20496ed4959e83048b3f8c0ab2532a63d633bd1104dddaceefd4e4dfbd555e6d30034360c042eb2f48f7a5171fd04fd530eeac1a6561f5

  • /data/data/com.biquge.book.noverls/files/com_alibaba_aliyun_crash_defend_sdk_info

    Filesize

    185B

    MD5

    e47f2223470f5fec847d8a556c5b84ab

    SHA1

    78d8dfd61e8a08800eef8010e7665645ceb6f3cd

    SHA256

    3f4fb3ab6324150b7049289120c6dd02b087fa80627253e4d9da1332307fa271

    SHA512

    72ad028bcb91d2dc5ee5fd657fb2d992293a86299769dc670243b1fd0882b611350a7f8950c02c95300893ea431c3e60091186b235f11957018a57fbf93d87e3

  • /storage/emulated/0/.DataStorage/ContextData.xml

    Filesize

    111B

    MD5

    b91adeade59a27d5a841164aba96de2c

    SHA1

    0cc79c67e2115072e25c9f3812307be542d197e9

    SHA256

    f9596ad8e1c4e45e72ccc5b19dbf85e20b4c83477a09d487042c07fade308c22

    SHA512

    213ee13ef26f4605fc89b029b069c4f21f933596027ac43b6db28c57f83124b26dc5aaabc77979995d46ce9a8fc7c50d61864e9f8d91bb4bb3631003ebca6a73

  • /storage/emulated/0/.DataStorage/ContextData.xml

    Filesize

    213B

    MD5

    24e7cd1491f1b0ce678e7f38d2e5462d

    SHA1

    4b0649dca4ec3b3389beb59ebdb2011e3091057d

    SHA256

    17e83efa7e04e288cf3cb0b6cefb828600458c7b3cea3f8ff9f5ddeadb3d70c8

    SHA512

    ad736583a8beb1fbcd48831a9617418003bb2b778d7638c29e180afe209683524b76671b9fd41b553a98c5197a12ac5ac61c47400db5a43225f36f39cb34a0bb

  • /storage/emulated/0/.UTSystemConfig/Global/Alvin2.xml

    Filesize

    65B

    MD5

    9781ca003f10f8d0c9c1945b63fdca7f

    SHA1

    4156cf5dc8d71dbab734d25e5e1598b37a5456f4

    SHA256

    3325d2a819fdd8062c2cdc48a09b995c9b012915bcdf88b1cf9742a7f057c793

    SHA512

    25a9877e274e0e9df29811825bd4f680fa0bf0ae6219527e4f1dcd17d0995d28b2926192d961a06ee5bef2eed73b3f38ec4ffdd0a1cda7ff2a10dc5711ffdf03

  • /storage/emulated/0/.UTSystemConfig/Global/Alvin2.xml

    Filesize

    111B

    MD5

    ffd2b3fb021d83347bdccf4cf20196af

    SHA1

    77fee3d16d79cb82799c4e58c692b4c247bd9733

    SHA256

    9f649dded95adcb5a26dd5a098ebd85bd2c8129b8b0661665606c9cdaebb4a6f

    SHA512

    7b7b244f2a07cc83778ebb2fc6e46264e76a39598dbbeb1f6b6f8bffa02dba810759b0b81e3d3b151740ccf4d629a5f65f4a368562e561d6cc2ed3b5e350d2f9

  • /storage/emulated/0/.UTSystemConfig/Global/Alvin2.xml

    Filesize

    167B

    MD5

    1055353d4e776b74d00ca3dbb93704f9

    SHA1

    ff924c6bafa2f5fce27214dca72230db199d431a

    SHA256

    fb79e383e1a31543dd4105464fec0e09b47933bd5dc2312c6e4d125483e2a030

    SHA512

    2bf4748957c5751fa6f5e3091dedce195995795ff6adb53e1581f2d16c1796837c2644949b959007eaf809a10b64f8a07be859b3e2d0a293a67332015fbe27bf

  • /storage/emulated/0/Android/data/com.biquge.book.noverls/cache/uil-images/journal.tmp

    Filesize

    31B

    MD5

    8c92de9ce46d41a22f3b20f77404cc1d

    SHA1

    8671a6dca00edb72be47363a7071be65cf270373

    SHA256

    68bb33ddeed9200be85a71f70b377985f9ee68e91578afbde8321463396f1274

    SHA512

    30f45fe9954215d6adafcc8f0a060a7ff41963a64f9b849a37f0d18fe045038d429ec13bf15226769c4ba78dad3c52f3d9e0dbbb4fcdea4828a1efe956e48f56

  • /storage/emulated/0/Android/data/com.snssdk.api/cache/clientudid.dat

    Filesize

    36B

    MD5

    2e0ebf43ca5b6b5cf209863260362e6d

    SHA1

    d49f363fad573846fa793bca1cedec800127844f

    SHA256

    4dd77ba3c721d3f3a216116e1532f19809758784186cd60b733f45e6c287530c

    SHA512

    c8d6633b190d28bc8b366ddc9fe1ce9a7a2e798ead7bb036af129b58222bf423d6d392d17e63abb689cb6ed031ed865d6f3907d3ed72e05efe51b2db91dd6ac7