Analysis
- max time kernel
150s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
01/02/2024, 04:04
General
- Target SB COPY6827366180.PDF.jar
- Size 40KB
- Sample240201-em5deaaha4
- SHA256 243a5315c031347617620bb5c8b694b3308932530519abc04e00c7c4fd7f7c62
Malware Config
Signatures
- STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
- Drops startup file 1 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 8 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exejava -jar "C:\Users\Admin\AppData\Local\Temp\SB COPY6827366180.PDF.jar"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M2⤵
- Modifies file permissions
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C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"3⤵
- Creates scheduled task(s)
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C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"2⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
SB COPY6827366180.PDF.jar
3903daac9bc4a3b7.timestamp
memory/2156-63-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-65-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-64-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-66-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-50-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-62-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-58-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-57-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-56-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2156-55-0x00000253EA960000-0x00000253EA961000-memory.dmp
memory/2156-42-0x00000253EA980000-0x00000253EB980000-memory.dmp
memory/2384-28-0x000001995E7F0000-0x000001995F7F0000-memory.dmp
memory/2384-33-0x000001995EAC0000-0x000001995EAD0000-memory.dmp
memory/2384-32-0x000001995EAB0000-0x000001995EAC0000-memory.dmp
memory/2384-31-0x000001995EAA0000-0x000001995EAB0000-memory.dmp
memory/2384-30-0x000001995EA90000-0x000001995EAA0000-memory.dmp
memory/2384-61-0x000001995E7F0000-0x000001995F7F0000-memory.dmp
memory/2384-29-0x000001995EA70000-0x000001995EA80000-memory.dmp
memory/2384-4-0x000001995E7F0000-0x000001995F7F0000-memory.dmp
memory/2384-17-0x000001995E7F0000-0x000001995F7F0000-memory.dmp
memory/2384-13-0x000001995CFD0000-0x000001995CFD1000-memory.dmp
memory/2384-12-0x000001995CFD0000-0x000001995CFD1000-memory.dmp