Analysis
-
max time kernel
148s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
17-04-2024 01:17
Static task
static1
Behavioral task
behavioral1
Sample
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe
Resource
win10v2004-20240226-en
General
-
Target
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe
-
Size
4.8MB
-
MD5
b3605edf698023865b1e65852ff9e627
-
SHA1
93c8ce5f7dd2e69edd50ef26d00f89b4bfbe20b7
-
SHA256
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255
-
SHA512
e7a82bbcd5bf3c9799248ecb91837e5f94431e7a1ad5515dd847d1b1cfce44b76e37981694ae14e5f1f30eab3d98088ef4751ce9b8b83ea11bbc1d9c95ea8ad2
-
SSDEEP
12288:937z0DEczgGtM6oHYuFr7H13jeGeTaGHK4juSAxJWjbA/bJLoGI:WD2twmd
Malware Config
Extracted
marsstealer
Default
Signatures
-
Mars Stealer
An infostealer written in C++ based on other infostealers.
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe -
Executes dropped EXE 1 IoCs
Processes:
QN8R84.exepid process 3448 QN8R84.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exedescription pid process target process PID 4076 wrote to memory of 3448 4076 3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe QN8R84.exe PID 4076 wrote to memory of 3448 4076 3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe QN8R84.exe PID 4076 wrote to memory of 3448 4076 3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe QN8R84.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe"C:\Users\Admin\AppData\Local\Temp\3c71bf86bdeb35c1b8b178e99f3193efabf63a55abebb3356426b731c362a255.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076 -
C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe"C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe"2⤵
- Executes dropped EXE
PID:3448
-
-
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=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:81⤵PID:3388
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x64 Redistributable Setup_10.0.40219\QN8R84.exe
Filesize159KB
MD500333d129e6ef188664819662a141476
SHA141605ab3ceffff75a4abd29d2df0fe26bc7de8a1
SHA25682314104e7bccbced4fbe95a65273d88678b183e45f4fffa8abf2a4ee6a06ee7
SHA512cb762a2b092fe00ce7c6b99816084dfd6d34d59dde8eb6ccad5f8c031f892f0a495fce7e8600e8fdcd3989f828813a06a5dc23feeb5f2ba7c8c649b9f0a8a150