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
24-12-2023 01:09
Static task
static1
Behavioral task
behavioral1
Sample
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe
Resource
win10v2004-20231215-en
General
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Target
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe
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Size
465KB
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MD5
1578590b1e0234b07316d604370a087b
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SHA1
ef865b18e16d6a74e38d3aba0d09600d0d450e3e
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SHA256
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503
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SHA512
4ab2b5847ca31f07dbdb9d7043d462f8556562f30b23827f8b75bc15b4c57e295d56cc93a71a9ab45468ffd985452c79cd89975d3acd13f1146097687f33b974
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SSDEEP
12288:YOZQdNMfxzE94hzovW/0NiqjAQeaDVI9VyvSBwoYE6xPqd2cftuw2:YYZqrNiTqaBb
Malware Config
Extracted
marsstealer
Default
www.moscow-post.su/su/wp-content/lozzz.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:
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe -
Executes dropped EXE 1 IoCs
Processes:
XBELK7QXNRC.exepid process 1400 XBELK7QXNRC.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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3312 1400 WerFault.exe XBELK7QXNRC.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exedescription pid process target process PID 2344 wrote to memory of 1400 2344 c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe XBELK7QXNRC.exe PID 2344 wrote to memory of 1400 2344 c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe XBELK7QXNRC.exe PID 2344 wrote to memory of 1400 2344 c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe XBELK7QXNRC.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"C:\Users\Admin\AppData\Local\Temp\c498dec6b5bae2d62448ffb450fa594f0c0e55c7424923d602386dbdb6c61503.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\ProgramData\Start Menu\XBELK7QXNRC.exe"C:\ProgramData\Start Menu\XBELK7QXNRC.exe"2⤵
- Executes dropped EXE
PID:1400 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1400 -s 13883⤵
- Program crash
PID:3312
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1400 -ip 14001⤵PID:3240
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\Microsoft\Windows\Start Menu\XBELK7QXNRC.exeFilesize
159KB
MD5b1d6d66282771bdaee20f0295991140a
SHA1f65c534725a4aa947285ecbb2acf3f5083803152
SHA2569697901177242e9a450aae820687ddbbd13196b5876ec77cdcb663cfbadb0053
SHA512af0bd80c0fdb1c336268c1bcdb8b0a05a588a1ded511669f6974b10e19752bed5305fda870a9a1e61be30db14228194f84ec8da74e9836eec3506d0629fe0900
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memory/1400-12-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB
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memory/1400-15-0x0000000000400000-0x000000000043D000-memory.dmpFilesize
244KB
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memory/2344-0-0x0000000000120000-0x0000000000198000-memory.dmpFilesize
480KB
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memory/2344-1-0x0000000074A20000-0x00000000751D0000-memory.dmpFilesize
7.7MB
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memory/2344-13-0x0000000074A20000-0x00000000751D0000-memory.dmpFilesize
7.7MB