Analysis
- max time kernel
143s - max time network
144s - platform
windows10_x64 - resource
win10v20201028 - submitted
12/11/2020, 14:17
General
- Target 464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf.exe
- Size 222KB
- Sample201112-rlk2csd53e
- SHA256 464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Executes dropped EXE 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Modifies service 2 TTPs 26 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 97 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf.exe"C:\Users\Admin\AppData\Local\Temp\464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exe"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Modifies service
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exe\" arguments" /sc MINUTE /mo 13⤵
- Creates scheduled task(s)
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe"2⤵
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf.exe" && del "C:\Users\Admin\AppData\Local\Temp\464e18204c62fb556867fa884488d776fc22f423f11bab4fdc45226aebe5f2cf.exe.config"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exe arguments1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\srmstormod32.exe arguments1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/648-0-0x00007FF91F570000-0x00007FF91FF10000-memory.dmp
memory/696-116-0x00007FF91F570000-0x00007FF91FF10000-memory.dmp
memory/2996-97-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-103-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-90-0x0000000021340000-0x0000000021341000-memory.dmp
memory/2996-91-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-92-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-93-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-94-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-95-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-96-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-11-0x0000000021040000-0x0000000021041000-memory.dmp
memory/2996-98-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-99-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-100-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-101-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-102-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-14-0x0000000021040000-0x0000000021041000-memory.dmp
memory/2996-104-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-105-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-106-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-107-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-108-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-109-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-110-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-111-0x0000000020A60000-0x0000000020A7C000-memory.dmp
memory/2996-10-0x0000000021040000-0x0000000021041000-memory.dmp
memory/2996-6-0x00007FF91F570000-0x00007FF91FF10000-memory.dmp
memory/3220-113-0x00007FF91F570000-0x00007FF91FF10000-memory.dmp