Analysis
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max time kernel
259s -
max time network
260s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
29-04-2024 12:34
Static task
static1
Behavioral task
behavioral1
Sample
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe
Resource
win7-20240419-en
General
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Target
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe
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Size
347KB
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MD5
5ec61087c62b7253d45b72e19c096b5f
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SHA1
90658f4eec68c48a2764acdd86d4ebf8757a27d3
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SHA256
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
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SHA512
71c3071214ac76f9a98c9a86eeb9234c28630a44d533714b85dce8867641de18db7283d4995bfd773434f03646fcd1ab3b79e65ad0210d79c9a5e4f670ca736a
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SSDEEP
6144:8o+4WgjZb/JFOtrrcQfDowFsTPgZvaRGbmDgAsWrJhUN5m8BO:5ZjZb/JfQboRTAvaYykBAfF
Malware Config
Extracted
stealc
http://185.172.128.151
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url_path
/7043a0c6a68d9c65.php
Signatures
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Detects Arechclient2 RAT 1 IoCs
Arechclient2.
Processes:
resource yara_rule behavioral2/memory/4688-170-0x0000000001100000-0x00000000011C6000-memory.dmp MALWARE_Win_Arechclient -
SectopRAT payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4688-170-0x0000000001100000-0x00000000011C6000-memory.dmp family_sectoprat -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
u2mk.0.exerun.exepid process 1280 u2mk.0.exe 4312 run.exe -
Loads dropped DLL 3 IoCs
Processes:
run.exeu2mk.0.exepid process 4312 run.exe 1280 u2mk.0.exe 1280 u2mk.0.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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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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Suspicious use of SetThreadContext 2 IoCs
Processes:
run.execmd.exedescription pid process target process PID 4312 set thread context of 376 4312 run.exe cmd.exe PID 376 set thread context of 4688 376 cmd.exe MSBuild.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
u2mk.0.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 u2mk.0.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString u2mk.0.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
run.execmd.exeu2mk.0.exeMSBuild.exepid process 4312 run.exe 4312 run.exe 376 cmd.exe 376 cmd.exe 1280 u2mk.0.exe 1280 u2mk.0.exe 1280 u2mk.0.exe 1280 u2mk.0.exe 4688 MSBuild.exe -
Suspicious behavior: MapViewOfSection 3 IoCs
Processes:
run.execmd.exepid process 4312 run.exe 376 cmd.exe 376 cmd.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
MSBuild.exedescription pid process Token: SeDebugPrivilege 4688 MSBuild.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
run.exeMSBuild.exepid process 4312 run.exe 4312 run.exe 4688 MSBuild.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exerun.execmd.exedescription pid process target process PID 3404 wrote to memory of 1280 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe u2mk.0.exe PID 3404 wrote to memory of 1280 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe u2mk.0.exe PID 3404 wrote to memory of 1280 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe u2mk.0.exe PID 3404 wrote to memory of 4312 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe run.exe PID 3404 wrote to memory of 4312 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe run.exe PID 3404 wrote to memory of 4312 3404 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe run.exe PID 4312 wrote to memory of 376 4312 run.exe cmd.exe PID 4312 wrote to memory of 376 4312 run.exe cmd.exe PID 4312 wrote to memory of 376 4312 run.exe cmd.exe PID 4312 wrote to memory of 376 4312 run.exe cmd.exe PID 376 wrote to memory of 4688 376 cmd.exe MSBuild.exe PID 376 wrote to memory of 4688 376 cmd.exe MSBuild.exe PID 376 wrote to memory of 4688 376 cmd.exe MSBuild.exe PID 376 wrote to memory of 4688 376 cmd.exe MSBuild.exe PID 376 wrote to memory of 4688 376 cmd.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe"C:\Users\Admin\AppData\Local\Temp\fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3404 -
C:\Users\Admin\AppData\Local\Temp\u2mk.0.exe"C:\Users\Admin\AppData\Local\Temp\u2mk.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1280 -
C:\Users\Admin\AppData\Local\Temp\u2mk.2\run.exe"C:\Users\Admin\AppData\Local\Temp\u2mk.2\run.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4312 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4688
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
1.4MB
MD5cc902d4651c18699edd7076c9dd6b343
SHA1a50c1cde18d5f84375aedb816cf24bcdb367eb7e
SHA2565b557d8202f564e9a638953327956e3e6c1084d4116d59c9cf78cd87ab4f1ec3
SHA5128918fc782078a18dbce525c3b5f315904761088f43bdf4ea41f2e1914fe8cd4bccad1e62374dbc5ff0e1b35fef005715ec4733c0aab9c016e702660adc3070fb
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Filesize
20KB
MD5c9ff7748d8fcef4cf84a5501e996a641
SHA102867e5010f62f97ebb0cfb32cb3ede9449fe0c9
SHA2564d3f3194cb1133437aa69bb880c8cbb55ddf06ff61a88ca6c3f1bbfbfd35d988
SHA512d36054499869a8f56ac8547ccd5455f1252c24e17d2b185955390b32da7e2a732ace4e0f30f9493fcc61425a2e31ed623465f998f41af69423ee0e3ed1483a73
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Filesize
203KB
MD511c11c214731f0346cb9733eb7f9f0b6
SHA18cf0db84222c4be556b4fb9e9927454540258eac
SHA256d75944f20168d0585058bd5b7035c79c4728cda469bf1edee6f62bfd2847ea67
SHA512f3eca4e0496f1e017f43bc29ecda5dba11b1b00638bd3538d9995ea49706db66f0e839e5fd8e980bf172561d11da2d1530462b395c89479737fa31fce1bebb42
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Filesize
3.7MB
MD578d3ca6355c93c72b494bb6a498bf639
SHA12fa4e5df74bfe75c207c881a1b0d3bc1c62c8b0e
SHA256a1dd547a63b256aa6a16871ed03f8b025226f7617e67b8817a08444df077b001
SHA5121b2df7bee2514aee7efd3579f5dd33c76b40606d07dba69a34c45747662fad61174db4931bca02b058830107959205e889fee74f8ccc9f6e03f9fd111761f4ea
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Filesize
1.6MB
MD5d1ba9412e78bfc98074c5d724a1a87d6
SHA10572f98d78fb0b366b5a086c2a74cc68b771d368
SHA256cbcea8f28d8916219d1e8b0a8ca2db17e338eb812431bc4ad0cb36c06fd67f15
SHA5128765de36d3824b12c0a4478c31b985878d4811bd0e5b6fba4ea07f8c76340bd66a2da3490d4871b95d9a12f96efc25507dfd87f431de211664dbe9a9c914af6f
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Filesize
1.3MB
MD51e8237d3028ab52821d69099e0954f97
SHA130a6ae353adda0c471c6ed5b7a2458b07185abf2
SHA2569387488f9d338e211be2cb45109bf590a5070180bc0d4a703f70d3cb3c4e1742
SHA512a6406d7c18694ee014d59df581f1f76e980b68e3361ae680dc979606a423eba48d35e37f143154dd97fe5f066baf0ea51a2e9f8bc822d593e1cba70ead6559f3
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Filesize
1.5MB
MD510d51becd0bbce0fab147ff9658c565e
SHA14689a18112ff876d3c066bc8c14a08fd6b7b7a4a
SHA2567b2db9c88f60ed6dd24b1dec321a304564780fdb191a96ec35c051856128f1ed
SHA51229faf493bb28f7842c905adc5312f31741effb09f841059b53d73b22aea2c4d41d73db10bbf37703d6aeb936ffacbc756a3cc85ba3c0b6a6863ef4d27fefcd29
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Filesize
2.4MB
MD59fb4770ced09aae3b437c1c6eb6d7334
SHA1fe54b31b0db8665aa5b22bed147e8295afc88a03
SHA256a05b592a971fe5011554013bcfe9a4aaf9cfc633bdd1fe3a8197f213d557b8d3
SHA512140fee6daf23fe8b7e441b3b4de83554af804f00ecedc421907a385ac79a63164bd9f28b4be061c2ea2262755d85e14d3a8e7dc910547837b664d78d93667256
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Filesize
85KB
MD5a723bf46048e0bfb15b8d77d7a648c3e
SHA18952d3c34e9341e4425571e10f22b782695bb915
SHA256b440170853bdb43b66497f701aee2901080326975140b095a1669cb9dee13422
SHA512ca8ea2f7f3c7af21b5673a0a3f2611b6580a7ed02efa2cfd8b343eb644ff09682bde43b25ef7aab68530d5ce31dcbd252c382dd336ecb610d4c4ebde78347273
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571