Analysis
-
max time kernel
144s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
28-12-2020 07:30
Static task
static1
Behavioral task
behavioral1
Sample
a911862b8e009e674d018aaff16a326b.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
a911862b8e009e674d018aaff16a326b.exe
Resource
win10v20201028
General
-
Target
a911862b8e009e674d018aaff16a326b.exe
-
Size
595KB
-
MD5
a911862b8e009e674d018aaff16a326b
-
SHA1
03537444d8d5fee6c3a86cd5ee86a33cba1deeca
-
SHA256
add432dca76d9ae5e7883d7fccba10211cbf0a6b2f694af0edc37a679739f375
-
SHA512
903e7d5299d2c84f0a2cf2eeec77f48f0aaf0f0bb4947cddddca1667c0721b2ccb38c36573c125ef37f5bb33b9ab6003030fe2606db647d39c8bbab3ee090b02
Malware Config
Signatures
-
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
-
RedLine Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/756-11-0x0000000005440000-0x0000000005464000-memory.dmp family_redline behavioral2/memory/756-13-0x0000000006C80000-0x0000000006CA2000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 756 bestof.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
-
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 15 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
a911862b8e009e674d018aaff16a326b.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 a911862b8e009e674d018aaff16a326b.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString a911862b8e009e674d018aaff16a326b.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 756 bestof.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
a911862b8e009e674d018aaff16a326b.exedescription pid process target process PID 3888 wrote to memory of 756 3888 a911862b8e009e674d018aaff16a326b.exe bestof.exe PID 3888 wrote to memory of 756 3888 a911862b8e009e674d018aaff16a326b.exe bestof.exe PID 3888 wrote to memory of 756 3888 a911862b8e009e674d018aaff16a326b.exe bestof.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\a911862b8e009e674d018aaff16a326b.exe"C:\Users\Admin\AppData\Local\Temp\a911862b8e009e674d018aaff16a326b.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3888 -
C:\Users\Admin\AppData\Roaming\leadentop\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:756
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
MD5
ce62304c3eff639e1b2352667a569b8a
SHA15a5cb774b59befe102fe04e93d9853cfbda3334b
SHA256e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62
SHA51299d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41
-
MD5
ce62304c3eff639e1b2352667a569b8a
SHA15a5cb774b59befe102fe04e93d9853cfbda3334b
SHA256e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62
SHA51299d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41