Analysis
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max time kernel
143s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
12/07/2023, 13:32
Static task
static1
Behavioral task
behavioral1
Sample
Arrival Notice pdf.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
Arrival Notice pdf.exe
Resource
win10v2004-20230703-en
General
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Target
Arrival Notice pdf.exe
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Size
622KB
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MD5
a864ca53a608186b1490ba903c1d2815
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SHA1
d54652d5c400d0111f80176f4083fcbab2e3d7c3
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SHA256
43ad88d4b9b62ac29d1872243f482198d5771dadf38903b63ba51bc344a871a5
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SHA512
9982e107ae6a603ad57600f4ae6343ecbd17dc633e99cb6252741c80f7ece68216cdbade23c21a7773c5ef3e698abbde19c0ce15442965a38b7b2ccbb752a8e8
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SSDEEP
12288:gqB2gfkl5w8ejw7CbwP1G0efdY3f5APcpD8/8L5zr7ZySBLYd:p2gfkl5w8Y6lo23x0cpYUlzXZySBEd
Malware Config
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
description ioc Process File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe Arrival Notice pdf.exe File opened (read-only) C:\Program Files\Qemu-ga\qemu-ga.exe Arrival Notice pdf.exe -
Loads dropped DLL 1 IoCs
pid Process 1660 Arrival Notice 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-1-5-21-1722984668-1829624581-3022101259-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook Arrival Notice pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook Arrival Notice pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook Arrival Notice pdf.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{C394D645-39A2-4EE1-BC25-2B651B221E86}.catalogItem svchost.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
pid Process 4328 Arrival Notice pdf.exe 4328 Arrival Notice pdf.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1660 Arrival Notice pdf.exe 4328 Arrival Notice pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1660 set thread context of 4328 1660 Arrival Notice pdf.exe 94 -
Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Common Files\Tuvaluaners160\Tachibana157\programafprvningerne.ect Arrival Notice 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 1660 Arrival Notice pdf.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 4328 Arrival Notice pdf.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4328 Arrival Notice pdf.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1660 wrote to memory of 4328 1660 Arrival Notice pdf.exe 94 PID 1660 wrote to memory of 4328 1660 Arrival Notice pdf.exe 94 PID 1660 wrote to memory of 4328 1660 Arrival Notice pdf.exe 94 PID 1660 wrote to memory of 4328 1660 Arrival Notice pdf.exe 94 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook Arrival Notice pdf.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook Arrival Notice pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Arrival Notice pdf.exe"C:\Users\Admin\AppData\Local\Temp\Arrival Notice pdf.exe"1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1660 -
C:\Users\Admin\AppData\Local\Temp\Arrival Notice pdf.exe"C:\Users\Admin\AppData\Local\Temp\Arrival Notice pdf.exe"2⤵
- Checks QEMU agent file
- 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:4328
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
PID:4640
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
11KB
MD5a4dd044bcd94e9b3370ccf095b31f896
SHA117c78201323ab2095bc53184aa8267c9187d5173
SHA2562e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc
SHA51287335a43b9ca13e1300c7c23e702e87c669e2bcf4f6065f0c684fc53165e9c1f091cc4d79a3eca3910f0518d3b647120ac0be1a68eaade2e75eaa64adfc92c5a
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1722984668-1829624581-3022101259-1000\0f5007522459c86e95ffcc62f32308f1_a0bc95ba-226b-43bc-9413-1a52b12558b5
Filesize46B
MD5d898504a722bff1524134c6ab6a5eaa5
SHA1e0fdc90c2ca2a0219c99d2758e68c18875a3e11e
SHA256878f32f76b159494f5a39f9321616c6068cdb82e88df89bcc739bbc1ea78e1f9
SHA51226a4398bffb0c0aef9a6ec53cd3367a2d0abf2f70097f711bbbf1e9e32fd9f1a72121691bb6a39eeb55d596edd527934e541b4defb3b1426b1d1a6429804dc61
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1722984668-1829624581-3022101259-1000\0f5007522459c86e95ffcc62f32308f1_a0bc95ba-226b-43bc-9413-1a52b12558b5
Filesize46B
MD5c07225d4e7d01d31042965f048728a0a
SHA169d70b340fd9f44c89adb9a2278df84faa9906b7
SHA2568c136c7ae08020ad16fd1928e36ad335ddef8b85906d66b712fff049aa57dc9a
SHA51223d3cea738e1abf561320847c39dadc8b5794d7bd8761b0457956f827a17ad2556118b909a3e6929db79980ccf156a6f58ac823cf88329e62417d2807b34b64b