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Analysis
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max time kernel
140s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05/04/2024, 01:32
Static task
static1
Behavioral task
behavioral1
Sample
8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe
Resource
win10v2004-20240226-en
General
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Target
8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe
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Size
4.9MB
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MD5
611e8af3116aa80fafc76d0501fd172e
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SHA1
0a82193d9485da25f424c6ff28bdde597fe023a6
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SHA256
8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676
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SHA512
1ad6fa695b89e9436c3953609337adfa01f6436e3714bc9268c2a3252fb967d9916c121c611f7416d5fe265a46f5fe891f07d02a02d27a8d6664a2fc0705acb3
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SSDEEP
6144:1Ss9IYGOxz2RRKOOCxU873xCswRnBOGLeQ5dBRRW6n5FkjdfJauy:t9/X12qOOCxj3x5whwQl2lauy
Malware Config
Extracted
marsstealer
Default
kenesrakishev.net/wp-load.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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe -
Executes dropped EXE 1 IoCs
pid Process 2344 VRAJ4UOP.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
pid pid_target Process procid_target 5104 2344 WerFault.exe 95 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3560 wrote to memory of 2344 3560 8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe 95 PID 3560 wrote to memory of 2344 3560 8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe 95 PID 3560 wrote to memory of 2344 3560 8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe"C:\Users\Admin\AppData\Local\Temp\8faff89242e941f569ee0852ba3463f26741d68b22627d11555b6cee5ef27676.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3560 -
C:\ProgramData\VRAJ4UOP.exe"C:\ProgramData\VRAJ4UOP.exe"2⤵
- Executes dropped EXE
PID:2344 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 17643⤵
- Program crash
PID:5104
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2344 -ip 23441⤵PID:4600
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3716 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵PID:4460
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
159KB
MD53cc6ddf90e7492c803b3d20142b126cc
SHA19899b9c40227e604131018ca2f812edf2ef5a32b
SHA25649ab6b67e5bc75c556a1a8248f318943bc697209fdac3f02f2721ded1a375897
SHA512df8e9bb2c77ca4b3d7d22fb10adf4a93f23442d1712f5afad9df2b073bd4d95fb2c658844d6d30b86a79bccd44b4dcd491bd7a5a98b78797cd72c8c704ab0ec8