Analysis
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max time kernel
154s -
max time network
140s -
platform
ubuntu-18.04_amd64 -
resource
ubuntu1804-amd64-20231215-en -
resource tags
arch:amd64arch:i386image:ubuntu1804-amd64-20231215-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system -
submitted
29-01-2024 05:50
Behavioral task
behavioral1
Sample
7f0c9c24f2bd4145e923fe65bcdfd49c
Resource
ubuntu1804-amd64-20231215-en
General
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Target
7f0c9c24f2bd4145e923fe65bcdfd49c
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Size
1.2MB
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MD5
7f0c9c24f2bd4145e923fe65bcdfd49c
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SHA1
ee482d0f762f102a86bd500c16b2586d3d20795c
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SHA256
7fd819ff6a69b045b0d7eb9900987dff73792a68acaa45cb0e2ef9298c5bba54
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SHA512
33a3ce0ee73f7ee07cb39955a8c29649578b4e38dbcd9d442dff725b97896bda1ba73bd816955f48c562925345c8790ec976a0b4e5a6cf1f93b2f2e91199b186
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SSDEEP
24576:e845rGHu6gVJKG75oFpA0VWeX462y1q2rJp0:745vRVJKGtSA0VWeo5u9p0
Malware Config
Signatures
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MrBlack trojan 2 IoCs
Processes:
resource yara_rule /usr/bin/bsd-port/getty family_mrblack /usr/bin/.sshd family_mrblack -
Executes dropped EXE 2 IoCs
Processes:
getty.sshdioc pid process /usr/bin/bsd-port/getty 1553 getty /usr/bin/.sshd 1570 .sshd -
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
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Processes:
description ioc File opened for modification /etc/init.d/DbSecuritySpt File opened for modification /etc/init.d/selinux -
Write file to user bin folder 1 TTPs 8 IoCs
Processes:
cpcpcpcpcpcpdescription ioc process File opened for modification /usr/bin/.sshd cp File opened for modification /usr/bin/dpkgd/ps cp File opened for modification /usr/bin/dpkgd/ss cp File opened for modification /usr/bin/dpkgd/lsof cp File opened for modification /usr/bin/lsof cp File opened for modification /usr/bin/bsd-port/getty.lock File opened for modification /usr/bin/bsd-port/udevd.lock File opened for modification /usr/bin/bsd-port/getty cp -
Writes file to system bin folder 1 TTPs 2 IoCs
Processes:
cpcpdescription ioc process File opened for modification /bin/ss cp File opened for modification /bin/ps cp -
Reads system network configuration 1 TTPs 1 IoCs
Uses contents of /proc filesystem to enumerate network settings.
Processes:
description ioc File opened for reading /proc/net/dev -
Reads runtime system information 23 IoCs
Reads data from /proc virtual filesystem.
Processes:
cpmkdircpmkdirmkdircpmkdircpmkdircpinsmodinsmodcpcpmkdirmkdircpmkdirmkdirmkdirmkdirdescription ioc process File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/stat File opened for reading /proc/meminfo File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/cmdline insmod File opened for reading /proc/cmdline insmod File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems mkdir -
Writes file to tmp directory 4 IoCs
Malware often drops required files in the /tmp directory.
Processes:
description ioc File opened for modification /tmp/moni.lod File opened for modification /tmp/bill.lock File opened for modification /tmp/gates.lod File opened for modification /tmp/notify.file
Processes
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/tmp/7f0c9c24f2bd4145e923fe65bcdfd49c/tmp/7f0c9c24f2bd4145e923fe65bcdfd49c1⤵
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"1⤵
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt2⤵
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"1⤵
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt2⤵
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"1⤵
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt2⤵
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"1⤵
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt2⤵
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"1⤵
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt2⤵
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/bin/shsh -c "mkdir -p /usr/bin/bsd-port"1⤵
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/bin/mkdirmkdir -p /usr/bin/bsd-port2⤵
- Reads runtime system information
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/bin/shsh -c "mkdir -p /usr/bin/bsd-port"1⤵
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/bin/mkdirmkdir -p /usr/bin/bsd-port2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /tmp/7f0c9c24f2bd4145e923fe65bcdfd49c /usr/bin/bsd-port/getty"1⤵
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/bin/cpcp -f /tmp/7f0c9c24f2bd4145e923fe65bcdfd49c /usr/bin/bsd-port/getty2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c /usr/bin/bsd-port/getty1⤵
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/usr/bin/bsd-port/getty/usr/bin/bsd-port/getty2⤵
- Executes dropped EXE
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/bin/shsh -c "mkdir -p /usr/bin"1⤵
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
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/bin/shsh -c "mkdir -p /usr/bin"1⤵
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /tmp/7f0c9c24f2bd4145e923fe65bcdfd49c /usr/bin/.sshd"1⤵
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/bin/cpcp -f /tmp/7f0c9c24f2bd4145e923fe65bcdfd49c /usr/bin/.sshd2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"1⤵
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/bin/lnln -s /etc/init.d/selinux /etc/rc1.d/S99selinux2⤵
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"1⤵
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/bin/lnln -s /etc/init.d/selinux /etc/rc2.d/S99selinux2⤵
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"1⤵
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/bin/lnln -s /etc/init.d/selinux /etc/rc3.d/S99selinux2⤵
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/bin/shsh -c /usr/bin/.sshd1⤵
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/usr/bin/.sshd/usr/bin/.sshd2⤵
- Executes dropped EXE
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"1⤵
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/bin/lnln -s /etc/init.d/selinux /etc/rc4.d/S99selinux2⤵
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"1⤵
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/bin/lnln -s /etc/init.d/selinux /etc/rc5.d/S99selinux2⤵
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/bin/shsh -c "mkdir -p /usr/bin/dpkgd"1⤵
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/bin/mkdirmkdir -p /usr/bin/dpkgd2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"1⤵
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/bin/cpcp -f /bin/ps /usr/bin/dpkgd/ps2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c "mkdir -p /bin"1⤵
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
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/bin/shsh -c "mkdir -p /bin"1⤵
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"1⤵
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/bin/cpcp -f /usr/bin/bsd-port/getty /bin/ps2⤵
- Writes file to system bin folder
- Reads runtime system information
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/bin/shsh -c "chmod 0755 /bin/ps"1⤵
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/bin/chmodchmod 0755 /bin/ps2⤵
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/bin/shsh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"1⤵
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/bin/cpcp -f /bin/ss /usr/bin/dpkgd/ss2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c "mkdir -p /bin"1⤵
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
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/bin/shsh -c "mkdir -p /bin"1⤵
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"1⤵
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/bin/cpcp -f /usr/bin/bsd-port/getty /bin/ss2⤵
- Writes file to system bin folder
- Reads runtime system information
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/bin/shsh -c "chmod 0755 /bin/ss"1⤵
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/bin/chmodchmod 0755 /bin/ss2⤵
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/bin/shsh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"1⤵
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/bin/cpcp -f /usr/bin/lsof /usr/bin/dpkgd/lsof2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c "mkdir -p /usr/bin"1⤵
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
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/bin/shsh -c "mkdir -p /usr/bin"1⤵
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"1⤵
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/bin/cpcp -f /usr/bin/bsd-port/getty /usr/bin/lsof2⤵
- Write file to user bin folder
- Reads runtime system information
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/bin/shsh -c "chmod 0755 /usr/bin/lsof"1⤵
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/bin/chmodchmod 0755 /usr/bin/lsof2⤵
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/bin/shsh -c "insmod /usr/bin/bsd-port/xpacket.ko"1⤵
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/sbin/insmodinsmod /usr/bin/bsd-port/xpacket.ko2⤵
- Reads runtime system information
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/bin/shsh -c "insmod /tmp/xpacket.ko"1⤵
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/sbin/insmodinsmod /tmp/xpacket.ko2⤵
- Reads runtime system information
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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/etc/init.d/DbSecuritySptFilesize
50B
MD5ae8f32712d7c1a2e7764ea5ff6558743
SHA1180f1d192073e9666316660a54e86a5c0c077ff1
SHA2565075f90b9cd82dbe868164b4b01805510a986a23a8132516fcac6f48e4d50a7c
SHA51219198a18a1af98ad38b1f3d1415918344284a740bc42b39ea91fc82fb7640e1f36d725fd4bfc11bddb6d49863d2ef702ebc13150b24437b2ce75abef2b3159d6
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/etc/init.d/selinuxFilesize
36B
MD5993cc15058142d96c3daf7852c3d5ee8
SHA10950b8b391b04dd3895ea33cd3141543ebd2525d
SHA2568171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208
SHA5120c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928
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/tmp/gates.lodFilesize
4B
MD5cb8acb1dc9821bf74e6ca9068032d623
SHA10ad54e429b2b6238550f24701541130b978e4640
SHA2568ff9538e65e6781d654b811f88161d12455935ffb8f470815063b6ab6cb7fdff
SHA512355051ba1d636582e623824587c9d5c6e6cc4c98dc830c26b212d61d0d009b91ad062aa99c7c2a3982a3b34091c49e412d7bfaf6d57c80794e7b3c31801dd964
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/tmp/moni.lodFilesize
4B
MD5495dabfd0ca768a3c3abd672079f48b6
SHA12121f1b445f6128e8547c4eca7101700248d4c1a
SHA25625d114d44f1ee498521f51cd12e524e8fd6e67c82a9d21fc29c0bbc7fff457c4
SHA512a42f803d3332cab5bf8d9da63cf705b7418509a6dc5b2e357fabf398fc29cf6fbbcf83c790776d440467968e7c14585aed16a9f61a4b3b590664363767fb8414
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/tmp/notify.fileFilesize
37B
MD576b38b7b44d81c861c723be729a31423
SHA11ce0c29fa01b1e8420a5d625d72fae3906f35411
SHA2561e534188847c57384c26d7c5b1e28b680ed3ade584c3c221b63344643716ef5c
SHA512468bb95f013396bc5fe33c6e881ec6eeecda62334259956c53b152e2e5e7b882d07559d21a3cba5c2a5a6bc584481d9d19810d35036d1aaebabc34c22f32e3af
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/usr/bin/.sshdFilesize
1.1MB
MD53c207c8822386f2da039af4ea99d2a12
SHA11806d34aa550ac027071f08eaa09051e564a2e5c
SHA25642be4f23ba079b6d00236205a4e6adde6b8f23c2952f2112b583898cb5297a43
SHA512e38fcc4bf17b613ca4bfd99f077fb7d57955c6a73b0a96760fe2fe694e64c4d49673c2aedd1fd86eca09924446aff32db628ba8868f68fb75e931d1cb901eab6
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/usr/bin/bsd-port/gettyFilesize
1.2MB
MD57f0c9c24f2bd4145e923fe65bcdfd49c
SHA1ee482d0f762f102a86bd500c16b2586d3d20795c
SHA2567fd819ff6a69b045b0d7eb9900987dff73792a68acaa45cb0e2ef9298c5bba54
SHA51233a3ce0ee73f7ee07cb39955a8c29649578b4e38dbcd9d442dff725b97896bda1ba73bd816955f48c562925345c8790ec976a0b4e5a6cf1f93b2f2e91199b186
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/usr/bin/dpkgd/lsofFilesize
159KB
MD5e093dc78225e2a0a25e3b137c1c1e442
SHA1c29497cfaae729eb576875e4fdfa400640ab16be
SHA2561190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e
SHA512fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0
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/usr/bin/dpkgd/psFilesize
130KB
MD5558edc26f8a38fa9788220b9af8a73e7
SHA13024d44e580e9c67f32f6c585d50e2a6cc9a7cac
SHA256b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5
SHA512edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f
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/usr/bin/dpkgd/ssFilesize
136KB
MD51dc929b5f2cd12fe6a2fe71140d2a9e3
SHA1f9995a92bb201b1b7738a39a38570ef0c40b52d2
SHA256418aae1da62554afe9f260866267af328fd761b3fd6f90f0ea53d543e2fefc38
SHA512fbed011c595084548db440dfbe485b7d27032a44a6ae9e141fe43f31c8c524ff9347135ab035deb441fca99e5a3794f7bb9194f148aa2f60f1547a7c67d47373