Analysis
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max time kernel
159s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system -
submitted
04-11-2023 11:52
Static task
static1
Behavioral task
behavioral1
Sample
b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe
Resource
win10v2004-20231023-en
General
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Target
b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe
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Size
5.6MB
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MD5
7db819034b5e2bdfd4553650dad4fc0d
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SHA1
3ebbb1f62fd5a6201d4002536340db754eed06eb
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SHA256
b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078
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SHA512
65c9c6b8382af84d06bd38a01e09d663b1958dc94727b3ed2163014a92769c82d8a172a6e3442f97c54db32452ad4d8507311b4be74f748da050f3a6d4a8c9fe
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SSDEEP
98304:CiRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:nRm1syxacY48eda2TMpQdZ9nc+fyhNjG
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4144 is-J5T3B.tmp 4580 IsoBuster_1121.exe 4544 IsoBuster_1121.exe -
Loads dropped DLL 1 IoCs
pid Process 4144 is-J5T3B.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 34 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Smart Projects\IsoBuster\unins000.dat is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-UHTBO.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9JPLK.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-HMML7.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-F6NNL.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-JH7OI.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Online\is-8FKS0.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Help\is-67EUO.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-GE7VK.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-T9C1U.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\is-RLOF4.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9TTHM.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9AORJ.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Online\is-BDB3T.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\unins000.dat is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-7HCCS.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-RGOS0.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-VITGM.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-RMM0E.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\is-6GK6G.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-6NN9O.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-CPU4C.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-6DHTB.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-CR9SM.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-A8UUU.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9VA05.tmp is-J5T3B.tmp File opened for modification C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-5T915.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-1LBBM.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-U4U8M.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-10TM1.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-24B8B.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-28G3C.tmp is-J5T3B.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-HCUM6.tmp is-J5T3B.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Runs net.exe
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Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4764 wrote to memory of 4144 4764 b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe 91 PID 4764 wrote to memory of 4144 4764 b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe 91 PID 4764 wrote to memory of 4144 4764 b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe 91 PID 4144 wrote to memory of 3040 4144 is-J5T3B.tmp 96 PID 4144 wrote to memory of 3040 4144 is-J5T3B.tmp 96 PID 4144 wrote to memory of 3040 4144 is-J5T3B.tmp 96 PID 4144 wrote to memory of 4580 4144 is-J5T3B.tmp 98 PID 4144 wrote to memory of 4580 4144 is-J5T3B.tmp 98 PID 4144 wrote to memory of 4580 4144 is-J5T3B.tmp 98 PID 3040 wrote to memory of 3536 3040 net.exe 99 PID 3040 wrote to memory of 3536 3040 net.exe 99 PID 3040 wrote to memory of 3536 3040 net.exe 99 PID 4144 wrote to memory of 4544 4144 is-J5T3B.tmp 101 PID 4144 wrote to memory of 4544 4144 is-J5T3B.tmp 101 PID 4144 wrote to memory of 4544 4144 is-J5T3B.tmp 101
Processes
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C:\Users\Admin\AppData\Local\Temp\b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe"C:\Users\Admin\AppData\Local\Temp\b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4764 -
C:\Users\Admin\AppData\Local\Temp\is-3RTEB.tmp\is-J5T3B.tmp"C:\Users\Admin\AppData\Local\Temp\is-3RTEB.tmp\is-J5T3B.tmp" /SL4 $B0090 "C:\Users\Admin\AppData\Local\Temp\b3b19e7bc9aedeeb00ba87d29b85e2963a7ce3d5595ef855f526faaca7b4c078.exe" 5597940 1418242⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4144 -
C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 23⤵
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 24⤵PID:3536
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i3⤵
- Executes dropped EXE
PID:4580
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s3⤵
- Executes dropped EXE
PID:4544
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.4MB
MD581bf17b6bc712eec07e481349afc3dbc
SHA1eedecca191d3a6b1f16483714343fe1019d7fc62
SHA25681baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b
SHA5123aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171
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Filesize
4.4MB
MD581bf17b6bc712eec07e481349afc3dbc
SHA1eedecca191d3a6b1f16483714343fe1019d7fc62
SHA25681baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b
SHA5123aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171
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Filesize
4.4MB
MD581bf17b6bc712eec07e481349afc3dbc
SHA1eedecca191d3a6b1f16483714343fe1019d7fc62
SHA25681baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b
SHA5123aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171
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Filesize
642KB
MD5e57693101a63b1f934f462bc7a2ef093
SHA12748ea8c66b980f14c9ce36c1c3061e690cf3ce7
SHA25671267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f
SHA5123dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e
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Filesize
642KB
MD5e57693101a63b1f934f462bc7a2ef093
SHA12748ea8c66b980f14c9ce36c1c3061e690cf3ce7
SHA25671267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f
SHA5123dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63