Analysis
- max time kernel
139s - max time network
150s - platform
windows10_x64 - resource
win10v20210408 - submitted
09/08/2021, 05:44
General
- Target RFQ k Peikko proposal,pdf.exe
- Size 1.0MB
- Sample210809-2kzefgtwgs
- SHA256 fdb6b5f3b83553b83111bd61152a4c4bd29996d778d6c118f52f01abd9435fe5
Malware Config
Signatures
- A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
- A310logger Executable 2 IoCs
- Executes dropped EXE 1 IoCs
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQ k Peikko proposal,pdf.exe"C:\Users\Admin\AppData\Local\Temp\RFQ k Peikko proposal,pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\RFQ k Peikko proposal,pdf.exe"C:\Users\Admin\AppData\Local\Temp\RFQ k Peikko proposal,pdf.exe"2⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/396-123-0x0000000007690000-0x000000000775A000-memory.dmp
memory/396-118-0x0000000004E80000-0x0000000004E81000-memory.dmp
memory/396-120-0x0000000004D60000-0x0000000004D61000-memory.dmp
memory/396-121-0x0000000005030000-0x0000000005043000-memory.dmp
memory/396-122-0x00000000071B0000-0x00000000071B1000-memory.dmp
memory/396-114-0x00000000002F0000-0x00000000002F1000-memory.dmp
memory/396-124-0x0000000009DD0000-0x0000000009E31000-memory.dmp
memory/396-116-0x00000000052E0000-0x00000000052E1000-memory.dmp
memory/396-117-0x0000000004DE0000-0x0000000004DE1000-memory.dmp
memory/396-119-0x0000000004DE0000-0x00000000052DE000-memory.dmp
memory/1408-125-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3732-132-0x00000000000F0000-0x00000000000F1000-memory.dmp
memory/3732-134-0x000000001AF90000-0x000000001AF92000-memory.dmp