Analysis
- max time kernel
149s - max time network
134s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
02/06/2026, 17:06
General
- Target 2026-06-02_511497ec95e36f6a61450a3414b6f97c_byakugan_cobalt-strike_coinminer_glassworm_icedid_njrat_.exe
- Size 36.2MB
- Sample260602-vmsbvabs8y
- SHA256 cae04dad46e202cb8582257ba95e0fd050dfec56e8f6adb4019618c99b07da99
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
85.204.125.75:1604
-
QSR_MUTEX_6yVRvpf7KKn9ALvbrc
-
encryption_key
N15OMIPyz74RUhss8wk1
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Detects Windows executables referencing non-Windows User-Agents 2 IoCs
- Detects executables containing common artifacts observed in infostealers 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.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-02_511497ec95e36f6a61450a3414b6f97c_byakugan_cobalt-strike_coinminer_glassworm_icedid_njrat_.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-02_511497ec95e36f6a61450a3414b6f97c_byakugan_cobalt-strike_coinminer_glassworm_icedid_njrat_.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\pjsrq3v93.exeC:\Users\Admin\AppData\Local\Temp\pjsrq3v93.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
pjsrq3v93.exe
memory/3500-5-0x0000000000190000-0x00000000001EE000-memory.dmp
memory/3500-6-0x00000000051E0000-0x0000000005786000-memory.dmp
memory/3500-8-0x0000000004B00000-0x0000000004B10000-memory.dmp
memory/3500-7-0x0000000004C30000-0x0000000004CC2000-memory.dmp
memory/3500-9-0x0000000004B80000-0x0000000004BE6000-memory.dmp
memory/3500-10-0x0000000005890000-0x00000000058A2000-memory.dmp
memory/3500-11-0x0000000004B00000-0x0000000004B10000-memory.dmp
memory/3500-12-0x0000000005F10000-0x0000000005F1A000-memory.dmp