Analysis
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max time kernel
148s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/03/2024, 19:53
Static task
static1
Behavioral task
behavioral1
Sample
payment advice_pdf.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
payment advice_pdf.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240226-en
General
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Target
payment advice_pdf.exe
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Size
551KB
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MD5
341dab4037e9eff3fa0f34fb8382f30c
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SHA1
9833559bcda07e6976364672f6b7c8bcef84571f
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SHA256
665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea
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SHA512
bd0d81ddde528f9987f749f9789d6a32300c7eef5d98593c4fc708d0352d0c8828982482894bd8ac9e768e320f4ba5fede2ecd8937a461dadad4015be2940f3d
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SSDEEP
6144:ImOP0pJkkuNjE241F13gyLWoz6XVasKvGSz7tvIPykUn5CRFaPyCoUtU7Hi8R55i:pkNE2cL3rKou+vGEZvx5CD1W4i83bWL
Malware Config
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Loads dropped DLL 1 IoCs
pid Process 2912 payment advice_pdf.exe -
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 Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook payment advice_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook payment advice_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook payment advice_pdf.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 3 drive.google.com 5 drive.google.com -
Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
pid Process 2712 payment advice_pdf.exe 2712 payment advice_pdf.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 2912 payment advice_pdf.exe 2712 payment advice_pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2912 set thread context of 2712 2912 payment advice_pdf.exe 28 -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Common Files\underskrider.pha payment advice_pdf.exe File opened for modification C:\Program Files (x86)\likvidationer\glamorise.ini payment advice_pdf.exe File opened for modification C:\Program Files (x86)\Common Files\unvariegated\Enker.non payment advice_pdf.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\resources\0409\frugtsaftens.urs payment advice_pdf.exe File opened for modification C:\Windows\resources\0409\Escapee246\svingturenes.ini payment advice_pdf.exe File opened for modification C:\Windows\overrealistic.ini payment advice_pdf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2912 payment advice_pdf.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 2712 payment advice_pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2712 payment advice_pdf.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 PID 2912 wrote to memory of 2712 2912 payment advice_pdf.exe 28 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook payment advice_pdf.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook payment advice_pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\payment advice_pdf.exe"C:\Users\Admin\AppData\Local\Temp\payment advice_pdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Users\Admin\AppData\Local\Temp\payment advice_pdf.exe"C:\Users\Admin\AppData\Local\Temp\payment advice_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2712
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1658372521-4246568289-2509113762-1000\0f5007522459c86e95ffcc62f32308f1_f4bfc772-1e14-4cb7-967a-2360098b659f
Filesize46B
MD5d898504a722bff1524134c6ab6a5eaa5
SHA1e0fdc90c2ca2a0219c99d2758e68c18875a3e11e
SHA256878f32f76b159494f5a39f9321616c6068cdb82e88df89bcc739bbc1ea78e1f9
SHA51226a4398bffb0c0aef9a6ec53cd3367a2d0abf2f70097f711bbbf1e9e32fd9f1a72121691bb6a39eeb55d596edd527934e541b4defb3b1426b1d1a6429804dc61
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1658372521-4246568289-2509113762-1000\0f5007522459c86e95ffcc62f32308f1_f4bfc772-1e14-4cb7-967a-2360098b659f
Filesize46B
MD5c07225d4e7d01d31042965f048728a0a
SHA169d70b340fd9f44c89adb9a2278df84faa9906b7
SHA2568c136c7ae08020ad16fd1928e36ad335ddef8b85906d66b712fff049aa57dc9a
SHA51223d3cea738e1abf561320847c39dadc8b5794d7bd8761b0457956f827a17ad2556118b909a3e6929db79980ccf156a6f58ac823cf88329e62417d2807b34b64b
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Filesize
11KB
MD59625d5b1754bc4ff29281d415d27a0fd
SHA180e85afc5cccd4c0a3775edbb90595a1a59f5ce0
SHA256c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
SHA512dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b