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Analysis
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max time kernel
100s -
max time network
157s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
01/06/2022, 16:01
Static task
static1
Behavioral task
behavioral1
Sample
asdf.exe
Resource
win7-20220414-en
General
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Target
asdf.exe
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Size
1.1MB
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MD5
c3f533c47a2f995cd4b5d16653698609
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SHA1
223cfb523ff8b64b339a34db3808dc6a386752a4
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SHA256
672fea64c92edc4d937d3132577b65813738bfddeab6a6b3ef35e6fa4b987009
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SHA512
6f6635c7864f675f0f9dfe315c5a7aeef93da7ca91b6016eed8506b7e1c809de8031f9659f87339f58e807a6d59b83214896af5ba71659b0b9e50511a1c91761
Malware Config
Extracted
arkei
Default
Signatures
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suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
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suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
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Executes dropped EXE 2 IoCs
pid Process 1540 dhgerme.exe 1844 dhgerme.exe -
Loads dropped DLL 5 IoCs
pid Process 1584 asdf.exe 1584 asdf.exe 1540 dhgerme.exe 1844 dhgerme.exe 1844 dhgerme.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 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
description pid Process procid_target PID 1584 set thread context of 1356 1584 asdf.exe 29 PID 1540 set thread context of 1844 1540 dhgerme.exe 30 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dhgerme.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 dhgerme.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1752 timeout.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1584 asdf.exe 1540 dhgerme.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1584 asdf.exe 1540 dhgerme.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 1584 wrote to memory of 1540 1584 asdf.exe 28 PID 1584 wrote to memory of 1540 1584 asdf.exe 28 PID 1584 wrote to memory of 1540 1584 asdf.exe 28 PID 1584 wrote to memory of 1540 1584 asdf.exe 28 PID 1584 wrote to memory of 1356 1584 asdf.exe 29 PID 1584 wrote to memory of 1356 1584 asdf.exe 29 PID 1584 wrote to memory of 1356 1584 asdf.exe 29 PID 1584 wrote to memory of 1356 1584 asdf.exe 29 PID 1584 wrote to memory of 1356 1584 asdf.exe 29 PID 1540 wrote to memory of 1844 1540 dhgerme.exe 30 PID 1540 wrote to memory of 1844 1540 dhgerme.exe 30 PID 1540 wrote to memory of 1844 1540 dhgerme.exe 30 PID 1540 wrote to memory of 1844 1540 dhgerme.exe 30 PID 1540 wrote to memory of 1844 1540 dhgerme.exe 30 PID 1844 wrote to memory of 1048 1844 dhgerme.exe 34 PID 1844 wrote to memory of 1048 1844 dhgerme.exe 34 PID 1844 wrote to memory of 1048 1844 dhgerme.exe 34 PID 1844 wrote to memory of 1048 1844 dhgerme.exe 34 PID 1048 wrote to memory of 1752 1048 cmd.exe 36 PID 1048 wrote to memory of 1752 1048 cmd.exe 36 PID 1048 wrote to memory of 1752 1048 cmd.exe 36 PID 1048 wrote to memory of 1752 1048 cmd.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\asdf.exe"C:\Users\Admin\AppData\Local\Temp\asdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1584 -
C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1540 -
C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"C:\Users\Admin\AppData\Local\Temp\dhgerme.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1844 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\dhgerme.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\SysWOW64\timeout.exetimeout /t 55⤵
- Delays execution with timeout.exe
PID:1752
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C:\Users\Admin\AppData\Local\Temp\asdf.exe"C:\Users\Admin\AppData\Local\Temp\asdf.exe"2⤵PID:1356
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a
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Filesize
636KB
MD53db09f87da90c69511e1e8b27adac692
SHA1f07109e4e9e46467022d45cf12c79f4ead85e0b6
SHA256e7d98b927978c0b948f863f504a1a0e950c7261e895edb0332aedcdcf40b7132
SHA512d301617a3f4c54e4698714243f8701ae462d5178c607f2550e03eb8f50be749c6c74a43037fb29a58e9b5853154c558f0884d74176f999bbe22518156055040a