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Analysis
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max time kernel
154s -
max time network
156s -
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
22/12/2023, 08:06
Behavioral task
behavioral1
Sample
China.z-rpvd
Resource
ubuntu1804-amd64-20231215-en
General
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Target
China.z-rpvd
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Size
1.5MB
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MD5
9f5049a1f72b215d122d8c13c77301c8
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SHA1
56c89dda5ff4182bdccef7e53a4af77407e2a9ed
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SHA256
8035cfe776a0730dedb984d83a1272054f920d248b6e8134126a61eecd28b97c
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SHA512
7f08ee472d1fa3b622ddf053aa365fba118eb312326fc18f62fb1caf2cd98ec7f583284394cc71566f4f01e164d9fad151e0c463f8fef0e3924ffa484576b9b3
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SSDEEP
49152:2nilOolLbt1laIunbZsehkqS55555555555555555555555555555555555k55w1:yeOolLbt1laIunlsehKNtYi7COEm
Malware Config
Signatures
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MrBlack trojan 1 IoCs
resource yara_rule behavioral1/files/fstream-4.dat family_mrblack -
Executes dropped EXE 2 IoCs
ioc pid Process /usr/bin/bsd-port/getty 1559 getty /usr/bin/.sshd 1577 .sshd -
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
description ioc File opened for reading /proc/cpuinfo -
description ioc File opened for modification /etc/init.d/DbSecuritySpt File opened for modification /etc/init.d/selinux -
Reads system routing table 1 TTPs 1 IoCs
Gets active network interfaces from /proc virtual filesystem.
description ioc File opened for reading /proc/net/route -
Write file to user bin folder 1 TTPs 8 IoCs
description ioc Process File opened for modification /usr/bin/bsd-port/udevd.lock Process not Found File opened for modification /usr/bin/bsd-port/getty cp 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 Process not Found -
Writes file to system bin folder 1 TTPs 2 IoCs
description ioc Process File opened for modification /bin/ps cp File opened for modification /bin/ss cp -
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.
description ioc File opened for reading /proc/net/dev File opened for reading /proc/net/route File opened for reading /proc/net/arp -
Reads runtime system information 23 IoCs
Reads data from /proc virtual filesystem.
description ioc Process File opened for reading /proc/filesystems mkdir File opened for reading /proc/filesystems cp File opened for reading /proc/stat Process not Found File opened for reading /proc/meminfo Process not Found File opened for reading /proc/filesystems cp File opened for reading /proc/filesystems cp 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/cmdline insmod 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/cmdline insmod 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 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 -
Writes file to tmp directory 5 IoCs
Malware often drops required files in the /tmp directory.
description ioc File opened for modification /tmp/gates.lod File opened for modification /tmp/notify.file File opened for modification /tmp/conf.n File opened for modification /tmp/moni.lod File opened for modification /tmp/bill.lock
Processes
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/tmp/China.z-rpvd/tmp/China.z-rpvd1⤵PID:1536
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt"1⤵PID:1541
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc1.d/S97DbSecuritySpt2⤵PID:1542
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt"1⤵PID:1543
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc2.d/S97DbSecuritySpt2⤵PID:1544
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt"1⤵PID:1545
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc3.d/S97DbSecuritySpt2⤵PID:1546
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt"1⤵PID:1547
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc4.d/S97DbSecuritySpt2⤵PID:1548
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/bin/shsh -c "ln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt"1⤵PID:1549
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/bin/lnln -s /etc/init.d/DbSecuritySpt /etc/rc5.d/S97DbSecuritySpt2⤵PID:1550
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/bin/shsh -c "mkdir -p /usr/bin/bsd-port"1⤵PID:1551
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/bin/mkdirmkdir -p /usr/bin/bsd-port2⤵
- Reads runtime system information
PID:1552
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/bin/shsh -c "mkdir -p /usr/bin/bsd-port"1⤵PID:1553
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/bin/mkdirmkdir -p /usr/bin/bsd-port2⤵
- Reads runtime system information
PID:1554
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/bin/shsh -c "cp -f /tmp/China.z-rpvd /usr/bin/bsd-port/getty"1⤵PID:1555
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/bin/cpcp -f /tmp/China.z-rpvd /usr/bin/bsd-port/getty2⤵
- Write file to user bin folder
- Reads runtime system information
PID:1556
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/bin/shsh -c /usr/bin/bsd-port/getty1⤵PID:1558
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/usr/bin/bsd-port/getty/usr/bin/bsd-port/getty2⤵
- Executes dropped EXE
PID:1559
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/bin/shsh -c "mkdir -p /usr/bin"1⤵PID:1561
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
PID:1562
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/bin/shsh -c "mkdir -p /usr/bin"1⤵PID:1563
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
PID:1564
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/bin/shsh -c "cp -f /tmp/China.z-rpvd /usr/bin/.sshd"1⤵PID:1565
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/bin/cpcp -f /tmp/China.z-rpvd /usr/bin/.sshd2⤵
- Write file to user bin folder
- Reads runtime system information
PID:1566
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc1.d/S99selinux"1⤵PID:1567
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/bin/lnln -s /etc/init.d/selinux /etc/rc1.d/S99selinux2⤵PID:1568
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc2.d/S99selinux"1⤵PID:1569
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/bin/lnln -s /etc/init.d/selinux /etc/rc2.d/S99selinux2⤵PID:1570
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc3.d/S99selinux"1⤵PID:1571
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/bin/lnln -s /etc/init.d/selinux /etc/rc3.d/S99selinux2⤵PID:1572
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc4.d/S99selinux"1⤵PID:1573
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/bin/lnln -s /etc/init.d/selinux /etc/rc4.d/S99selinux2⤵PID:1576
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/bin/shsh -c /usr/bin/.sshd1⤵PID:1575
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/usr/bin/.sshd/usr/bin/.sshd2⤵
- Executes dropped EXE
PID:1577
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/bin/shsh -c "ln -s /etc/init.d/selinux /etc/rc5.d/S99selinux"1⤵PID:1578
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/bin/lnln -s /etc/init.d/selinux /etc/rc5.d/S99selinux2⤵PID:1579
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/bin/shsh -c "mkdir -p /usr/bin/dpkgd"1⤵PID:1580
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/bin/mkdirmkdir -p /usr/bin/dpkgd2⤵
- Reads runtime system information
PID:1581
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/bin/shsh -c "cp -f /bin/ps /usr/bin/dpkgd/ps"1⤵PID:1582
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/bin/cpcp -f /bin/ps /usr/bin/dpkgd/ps2⤵
- Write file to user bin folder
- Reads runtime system information
PID:1583
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/bin/shsh -c "mkdir -p /bin"1⤵PID:1584
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
PID:1585
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/bin/shsh -c "mkdir -p /bin"1⤵PID:1586
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
PID:1587
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /bin/ps"1⤵PID:1588
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/bin/cpcp -f /usr/bin/bsd-port/getty /bin/ps2⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1589
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/bin/shsh -c "chmod 0755 /bin/ps"1⤵PID:1593
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/bin/chmodchmod 0755 /bin/ps2⤵PID:1594
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/bin/shsh -c "cp -f /bin/ss /usr/bin/dpkgd/ss"1⤵PID:1595
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/bin/cpcp -f /bin/ss /usr/bin/dpkgd/ss2⤵
- Write file to user bin folder
- Reads runtime system information
PID:1596
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/bin/shsh -c "mkdir -p /bin"1⤵PID:1597
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
PID:1598
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/bin/shsh -c "mkdir -p /bin"1⤵PID:1599
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/bin/mkdirmkdir -p /bin2⤵
- Reads runtime system information
PID:1600
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /bin/ss"1⤵PID:1601
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/bin/cpcp -f /usr/bin/bsd-port/getty /bin/ss2⤵
- Writes file to system bin folder
- Reads runtime system information
PID:1602
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/bin/shsh -c "chmod 0755 /bin/ss"1⤵PID:1603
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/bin/chmodchmod 0755 /bin/ss2⤵PID:1604
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/bin/shsh -c "cp -f /usr/bin/lsof /usr/bin/dpkgd/lsof"1⤵PID:1605
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/bin/cpcp -f /usr/bin/lsof /usr/bin/dpkgd/lsof2⤵
- Write file to user bin folder
- Reads runtime system information
PID:1606
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/bin/shsh -c "mkdir -p /usr/bin"1⤵PID:1607
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
PID:1608
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/bin/shsh -c "mkdir -p /usr/bin"1⤵PID:1609
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/bin/mkdirmkdir -p /usr/bin2⤵
- Reads runtime system information
PID:1610
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/bin/shsh -c "cp -f /usr/bin/bsd-port/getty /usr/bin/lsof"1⤵PID:1611
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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
PID:1612
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/bin/shsh -c "chmod 0755 /usr/bin/lsof"1⤵PID:1613
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/bin/chmodchmod 0755 /usr/bin/lsof2⤵PID:1614
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/bin/shsh -c "insmod /tmp/xpacket.ko"1⤵PID:1617
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/sbin/insmodinsmod /tmp/xpacket.ko2⤵
- Reads runtime system information
PID:1618
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/bin/shsh -c "insmod /usr/bin/bsd-port/xpacket.ko"1⤵PID:1619
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/sbin/insmodinsmod /usr/bin/bsd-port/xpacket.ko2⤵
- Reads runtime system information
PID:1620
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
36B
MD5993cc15058142d96c3daf7852c3d5ee8
SHA10950b8b391b04dd3895ea33cd3141543ebd2525d
SHA2568171d077918611803d93088409f220c66fae1c670b297e1aa5d8cbd548ce9208
SHA5120c4256c00a3710f97e92581b552682b36b62afc35fe72622c491323c618c19ea62611ac04ccafc3dfcde2254a2ebbd93b69b66795b16e36332293bed83adb928
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Filesize
4B
MD5bcb41ccdc4363c6848a1d760f26c28a0
SHA1e66d35a623d670f416f6080f849b834be5e04d17
SHA2566c77b607e17df16d31c46c746a36328056fc8d153b71370ed1a56d4c0700238e
SHA512bb8e75c07ce94b7022865b826126bbba68cea5110cf353f015b80727782246fbff3e004a655b00d495e34f4d426f42abba8558e4bf1e557ca381f0c8e280da6c
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Filesize
159KB
MD5e093dc78225e2a0a25e3b137c1c1e442
SHA1c29497cfaae729eb576875e4fdfa400640ab16be
SHA2561190f4dbc7be174de8fd4096c9bf7a28eebfac937d308b7cc533be4a1240d26e
SHA512fe1cc7a65327732eaaee89f427c10239ba822430e34177842f4681068d78d404b1830d808a2a71b1efcc5f126c6d8c053512237421173aaa150e215a672da6f0
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Filesize
130KB
MD5558edc26f8a38fa9788220b9af8a73e7
SHA13024d44e580e9c67f32f6c585d50e2a6cc9a7cac
SHA256b76435c80333d2c1fd18e0e7682f1c9dfb5da8d507e93e3c416f54b481c428d5
SHA512edaa425b441044f015e8f68fffa1664e42372d00dd0e7b0924d24ce947aa8e5f96b3bdc326fa2f8b978e3fcf638a1ceca45a223735db73f1607df66990feb56f
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Filesize
136KB
MD51dc929b5f2cd12fe6a2fe71140d2a9e3
SHA1f9995a92bb201b1b7738a39a38570ef0c40b52d2
SHA256418aae1da62554afe9f260866267af328fd761b3fd6f90f0ea53d543e2fefc38
SHA512fbed011c595084548db440dfbe485b7d27032a44a6ae9e141fe43f31c8c524ff9347135ab035deb441fca99e5a3794f7bb9194f148aa2f60f1547a7c67d47373