Analysis
- max time kernel
67s - max time network
67s - platform
windows10_x64 - resource
win10v20210410 - submitted
26/06/2021, 07:17
Errors
Reason
Remote task has failed: Machine shutdown
General
- Target 44da3ea381b7c499288c8af03cb2f273.exe
- Size 344KB
- Sample210626-t6barrdpy2
- SHA256 9a6df8254125afdaf645dd3e76100f3ed825f2a4e18b39ac8a5c5f8e0cfb56ef
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://ppcspb.com/upload/
-
http://mebbing.com/upload/
-
http://twcamel.com/upload/
-
http://howdycash.com/upload/
-
http://lahuertasonora.com/upload/
-
http://kpotiques.com/upload/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Deletes itself 1 IoCs
- Loads dropped DLL 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\44da3ea381b7c499288c8af03cb2f273.exe"C:\Users\Admin\AppData\Local\Temp\44da3ea381b7c499288c8af03cb2f273.exe"1⤵
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Users\Admin\AppData\Local\Temp\FC67.exeC:\Users\Admin\AppData\Local\Temp\FC67.exe1⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/956-121-0x00000000025B0000-0x000000000261B000-memory.dmp
memory/956-122-0x0000000000400000-0x000000000094C000-memory.dmp
memory/3064-117-0x0000000000740000-0x0000000000756000-memory.dmp
memory/3100-115-0x0000000000A20000-0x0000000000A29000-memory.dmp
memory/3100-116-0x0000000000400000-0x00000000008F4000-memory.dmp