Analysis
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max time kernel
73s -
max time network
38s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
09-08-2021 06:59
Static task
static1
Behavioral task
behavioral1
Sample
RFQ k Peikko proposal,pdf.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
RFQ k Peikko proposal,pdf.exe
Resource
win10v20210410
General
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Target
RFQ k Peikko proposal,pdf.exe
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Size
1.0MB
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MD5
b44f95c332073b28fe95157f470f8f2a
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SHA1
ab9265412559d4992d540aa11f05d73e4f544374
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SHA256
fdb6b5f3b83553b83111bd61152a4c4bd29996d778d6c118f52f01abd9435fe5
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SHA512
25bd35d5bd9d233d9f0bc21afa1af51c2326a252d3afe16f65a22f17ec85bd7a73529b24f4408d20aa0aec84dc79339574f4e57f1876f480bbb6b23cc5aa8f4d
Malware Config
Signatures
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A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
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A310logger Executable 3 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe a310logger -
Executes dropped EXE 1 IoCs
Processes:
Fox.exepid process 1548 Fox.exe -
Loads dropped DLL 1 IoCs
Processes:
RFQ k Peikko proposal,pdf.exepid process 752 RFQ k Peikko proposal,pdf.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
RFQ k Peikko proposal,pdf.exedescription pid process target process PID 564 set thread context of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RFQ k Peikko proposal,pdf.exepid process 752 RFQ k Peikko proposal,pdf.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RFQ k Peikko proposal,pdf.exepid process 752 RFQ k Peikko proposal,pdf.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
RFQ k Peikko proposal,pdf.exeRFQ k Peikko proposal,pdf.exedescription pid process target process PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 564 wrote to memory of 752 564 RFQ k Peikko proposal,pdf.exe RFQ k Peikko proposal,pdf.exe PID 752 wrote to memory of 1548 752 RFQ k Peikko proposal,pdf.exe Fox.exe PID 752 wrote to memory of 1548 752 RFQ k Peikko proposal,pdf.exe Fox.exe PID 752 wrote to memory of 1548 752 RFQ k Peikko proposal,pdf.exe Fox.exe PID 752 wrote to memory of 1548 752 RFQ k Peikko proposal,pdf.exe Fox.exe
Processes
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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
PID:564 -
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⤵
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:752 -
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe3⤵
- Executes dropped EXE
PID:1548
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
91b41651e6e9ab352805c6d35a297d08
SHA111b8eaa7b7941461bc952b11ec3f07d25dcd1c2e
SHA2560872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723
SHA512b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892
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MD5
91b41651e6e9ab352805c6d35a297d08
SHA111b8eaa7b7941461bc952b11ec3f07d25dcd1c2e
SHA2560872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723
SHA512b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892
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MD5
91b41651e6e9ab352805c6d35a297d08
SHA111b8eaa7b7941461bc952b11ec3f07d25dcd1c2e
SHA2560872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723
SHA512b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892