Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
29-12-2023 11:06
Static task
static1
Behavioral task
behavioral1
Sample
a3e2fbe15176a56ac45f26368b80b3fc.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
a3e2fbe15176a56ac45f26368b80b3fc.exe
Resource
win10v2004-20231215-en
General
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Target
a3e2fbe15176a56ac45f26368b80b3fc.exe
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Size
159KB
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MD5
a3e2fbe15176a56ac45f26368b80b3fc
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SHA1
a0431e50317a2c6c94aade1a10be6f20f62ad436
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SHA256
61b5c2f0dd54539e5baea9155aaca72c8fd6f12279083511d4d3eccd9e360f9b
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SHA512
26f7e48275c7565405ca94a15b0414acfbc824979627ed9b48d3dfc5360e8c0cd93227f00df9ed54435ab79a84b0771a0323a6e37448ff15481ed84b92a2f3ac
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SSDEEP
3072:UemE6vyiPCkN0sVKOUP+qU16bQGTt/OgmyNFrnPKDNJSp8Bb8EG:UrSUm+TNG5/Og9frnW8EG
Malware Config
Extracted
marsstealer
Default
couriercare.in/2/gate.php
Signatures
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Mars Stealer
An infostealer written in C++ based on other infostealers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
a3e2fbe15176a56ac45f26368b80b3fc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation a3e2fbe15176a56ac45f26368b80b3fc.exe -
Loads dropped DLL 2 IoCs
Processes:
a3e2fbe15176a56ac45f26368b80b3fc.exepid process 4776 a3e2fbe15176a56ac45f26368b80b3fc.exe 4776 a3e2fbe15176a56ac45f26368b80b3fc.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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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:
a3e2fbe15176a56ac45f26368b80b3fc.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a3e2fbe15176a56ac45f26368b80b3fc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a3e2fbe15176a56ac45f26368b80b3fc.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1460 timeout.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
a3e2fbe15176a56ac45f26368b80b3fc.execmd.exedescription pid process target process PID 4776 wrote to memory of 1528 4776 a3e2fbe15176a56ac45f26368b80b3fc.exe cmd.exe PID 4776 wrote to memory of 1528 4776 a3e2fbe15176a56ac45f26368b80b3fc.exe cmd.exe PID 4776 wrote to memory of 1528 4776 a3e2fbe15176a56ac45f26368b80b3fc.exe cmd.exe PID 1528 wrote to memory of 1460 1528 cmd.exe timeout.exe PID 1528 wrote to memory of 1460 1528 cmd.exe timeout.exe PID 1528 wrote to memory of 1460 1528 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a3e2fbe15176a56ac45f26368b80b3fc.exe"C:\Users\Admin\AppData\Local\Temp\a3e2fbe15176a56ac45f26368b80b3fc.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a3e2fbe15176a56ac45f26368b80b3fc.exe" & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\mozglue.dllFilesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\ProgramData\nss3.dllFilesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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memory/4776-0-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB
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memory/4776-1-0x0000000060900000-0x0000000060992000-memory.dmpFilesize
584KB
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memory/4776-66-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB