Analysis
- max time kernel
146s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
04/05/2024, 19:23
General
- Target 1423a4be112f647fe95730150a842627_JaffaCakes118.exe
- Size 348KB
- Sample240504-x3wqbabc44
- SHA256 7655e16003aa8856e7585f5d4b76d39f9e56b784442c9523d9f0b7b9c85b714b
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Slave
-
134.209.192.40:4782
-
QSR_MUTEX_k8JOK9yrF6X0eZEc1V
-
encryption_key
Mx5vn03LCy6ul2fLffQw
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT 2 IoCs
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1423a4be112f647fe95730150a842627_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\1423a4be112f647fe95730150a842627_JaffaCakes118.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
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=3020 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/4772-19-0x0000000006C90000-0x0000000006C9A000-memory.dmp
memory/4772-18-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/4772-15-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/4772-14-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/5104-4-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/5104-6-0x0000000004D80000-0x0000000004DE6000-memory.dmp
memory/5104-7-0x0000000005300000-0x0000000005312000-memory.dmp
memory/5104-8-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/5104-9-0x0000000006000000-0x000000000603C000-memory.dmp
memory/5104-5-0x0000000074DCE000-0x0000000074DCF000-memory.dmp
memory/5104-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp
memory/5104-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp
memory/5104-17-0x0000000074DC0000-0x0000000075570000-memory.dmp
memory/5104-2-0x0000000005330000-0x00000000058D4000-memory.dmp
memory/5104-1-0x0000000000360000-0x00000000003BE000-memory.dmp