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Overview
overview
8Static
static
741033e4baa...e0.exe
windows7-x64
841033e4baa...e0.exe
windows10-2004-x64
8$PLUGINSDIR/INetC.dll
windows7-x64
3$PLUGINSDIR/INetC.dll
windows10-2004-x64
3$TEMP/BroomSetup.exe
windows7-x64
7$TEMP/BroomSetup.exe
windows10-2004-x64
7$TEMP/syncUpd.exe
windows7-x64
8$TEMP/syncUpd.exe
windows10-2004-x64
8Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05/03/2024, 10:52
Behavioral task
behavioral1
Sample
41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/INetC.dll
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/INetC.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
$TEMP/BroomSetup.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
$TEMP/BroomSetup.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
$TEMP/syncUpd.exe
Resource
win7-20240221-en
General
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Target
41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe
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Size
1.8MB
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MD5
6c60e89e9a2bd99018da4930811f5f17
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SHA1
6bbf67b1133ad3e97268c6b49c81b5c87d56d22c
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SHA256
41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0
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SHA512
bd288744433405b6760676c82b3efbb163508506c1645b8b07102738f8f02a3b8fc0420fc22da3a74354e6af3be7d79c5e7df511983913c1912d73cdbc8b833e
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SSDEEP
49152:tIiiK2S7ndMn8Oj/xNzvaT55ItITY2DV1ttwyNrDI:qiiK2Ina8Oz/mT55IIF1ttwyNrDI
Malware Config
Signatures
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Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
pid Process 1364 syncUpd.exe 5028 BroomSetup.exe -
Loads dropped DLL 4 IoCs
pid Process 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 1364 syncUpd.exe 1364 syncUpd.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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resource yara_rule behavioral2/files/0x000700000002322f-59.dat upx behavioral2/memory/5028-64-0x0000000000400000-0x0000000000930000-memory.dmp upx behavioral2/memory/5028-87-0x0000000000400000-0x0000000000930000-memory.dmp upx -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4832 1364 WerFault.exe 87 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 syncUpd.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString syncUpd.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5104 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1364 syncUpd.exe 1364 syncUpd.exe 1364 syncUpd.exe 1364 syncUpd.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 5028 BroomSetup.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4888 wrote to memory of 1364 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 87 PID 4888 wrote to memory of 1364 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 87 PID 4888 wrote to memory of 1364 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 87 PID 4888 wrote to memory of 5028 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 96 PID 4888 wrote to memory of 5028 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 96 PID 4888 wrote to memory of 5028 4888 41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe 96 PID 5028 wrote to memory of 2640 5028 BroomSetup.exe 97 PID 5028 wrote to memory of 2640 5028 BroomSetup.exe 97 PID 5028 wrote to memory of 2640 5028 BroomSetup.exe 97 PID 2640 wrote to memory of 1056 2640 cmd.exe 100 PID 2640 wrote to memory of 1056 2640 cmd.exe 100 PID 2640 wrote to memory of 1056 2640 cmd.exe 100 PID 2640 wrote to memory of 5104 2640 cmd.exe 101 PID 2640 wrote to memory of 5104 2640 cmd.exe 101 PID 2640 wrote to memory of 5104 2640 cmd.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe"C:\Users\Admin\AppData\Local\Temp\41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4888 -
C:\Users\Admin\AppData\Local\Temp\syncUpd.exeC:\Users\Admin\AppData\Local\Temp\syncUpd.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1364 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 24283⤵
- Program crash
PID:4832
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C:\Users\Admin\AppData\Local\Temp\BroomSetup.exeC:\Users\Admin\AppData\Local\Temp\BroomSetup.exe2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5028 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:2640 -
C:\Windows\SysWOW64\chcp.comchcp 12514⤵PID:1056
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F4⤵
- Creates scheduled task(s)
PID:5104
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1364 -ip 13641⤵PID:3116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
11KB
MD5a33e5b189842c5867f46566bdbf7a095
SHA1e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA2565abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b
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Filesize
287KB
MD5801fb336a45afb9c6dc7e97fff65edb1
SHA1383f49c069d276417f9243eedf6a808bc880cc78
SHA256ef480a4ba7773186ccaa892cbc81a2a687200081a150324ff5058bd475db9a67
SHA51286a06b55374a296d62d8d54723de899b6f77c2b153e0f772ee4a241961cdb493b3c171b675bac4f7c80d7c616514fb87405fa65609098486b8bcdfb042d0a51e
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Filesize
79KB
MD58c4d332bf829dd684f27a5c8589b9cf8
SHA1f49cb8ca049ad4467653404e634bd15968f80ae8
SHA2566189ae6af7dcdc22a07f902c32c54e13e38d8449200a8ceed0c9633f1c5014ef
SHA51267278141fec8e4ce9ca8a80b673dcf193d787af8deb5116dc20693cbdd3ff5871ea744c22599faae5750c509885fcca3be5b3dab20195cb13f0dbdc81287317c
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Filesize
278KB
MD52ebe96af5efbed6ba453aeb28e0e1d89
SHA16fec70184a5247b2b49866d507c3ebd5500aca36
SHA256a2986db11ff395650afc80b3d20e51d8f61a1607996d2f850c0d7362e79c5230
SHA512b9b08f1c5f19190c5bb7be525146f8743b5d1ce89034fbbab1e6d4bba2775830098d57a553d880e492a8669ce8daa17e113cd506aab84ac7a22727583d26e564
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Filesize
1.7MB
MD5eee5ddcffbed16222cac0a1b4e2e466e
SHA128b40c88b8ea50b0782e2bcbb4cc0f411035f3d5
SHA2562a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54
SHA5128f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc
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Filesize
21KB
MD52b342079303895c50af8040a91f30f71
SHA1b11335e1cb8356d9c337cb89fe81d669a69de17e
SHA2562d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f
SHA512550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47
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Filesize
223KB
MD54798812066cbae4409c74a92f61d89be
SHA1f22ae1face4df9e4ab6445a6e43eedd12c8af868
SHA25617102324a533f9666f6d2a9a9269807f9b49591a20ff7fd4045c43b432ac0079
SHA512e55b78580a1aa1ab9e262ddb57ae95759d459ab75db99459882a22f05310e2e53131f05e0f110ed0cf2056b18f8671272eabda5cbd21667cd51be5754e4c3e56
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Filesize
128B
MD511bb3db51f701d4e42d3287f71a6a43e
SHA163a4ee82223be6a62d04bdfe40ef8ba91ae49a86
SHA2566be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331
SHA512907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2