021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0

Analysis

max time kernel
152s
max time network
103s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
28-11-2022 01:09

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General

Target

021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe
Size

68KB
MD5

a104334f091fba128807dcf115819720
SHA1

ab4dee275193e7a0f2a19f71cfc6d0f69692f424
SHA256

021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0
SHA512

bda7359cc600a26a40f252ff52f36a83605de71adef15c87c4a0fb4cfb5d2f2b1ae633b4549aceaedfa6a69101bdab32571bea2eb283f553a14ae2faf036e34e
SSDEEP

768:rdsv/UDO00cfykvw8qqOve3ZVrt2F0mv9PIKr5LQ6hZDyVYUv5m/668OWQHYNnds:qeO00cdVrMFjdF5L7hov5Ex4Br+KkCKT

Score

10^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	SP00LSV.EXE

Executes dropped EXE 3 IoCs

pid	Process
1120	winlog.exe
1864	SP00LSV.EXE
1380	SVCH0ST.EXE

Drops file in Windows directory 10 IoCs

description	ioc	Process
File created	C:\Windows\Recycled.{645FF040-5081-101B-9F08-00AA002F954E}\winlog.EXE	SP00LSV.EXE
File opened for modification	C:\Windows\Recycled.{645FF040-5081-101B-9F08-00AA002F954E}\winlog.EXE	SP00LSV.EXE
File opened for modification	C:\Windows\Recycled.{645FF040-5081-101B-9F08-00AA002F954E}	SP00LSV.EXE
File opened for modification	C:\Windows\winlog.EXE	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe
File opened for modification	C:\Windows\SP00LSV.EXE	winlog.exe
File created	C:\Windows\SVCH0ST.EXE	SP00LSV.EXE
File opened for modification	C:\Windows\Recycled.{645FF040-5081-101B-9F08-00AA002F954E}\system.exe	SP00LSV.EXE
File created	C:\Windows\winlog.EXE	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe
File opened for modification	C:\Windows\SVCH0ST.EXE	SP00LSV.EXE
File created	C:\Windows\Recycled.{645FF040-5081-101B-9F08-00AA002F954E}\system.exe	SP00LSV.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 24 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\explore	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\ = "open"	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\explore\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\explore\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\NeverShowExt	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\open\command	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\open	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\open\ = "??(&O) "	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\open\command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Drive\shell\explore\ = "?????(&X) "	SP00LSV.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\vbsfile\shell\open\command	SP00LSV.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\VBSFile\Shell\Open\Command\ = "C:\\Windows\\winlog.EXE %1"	SP00LSV.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1864	SP00LSV.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1864	SP00LSV.EXE
1120	winlog.exe
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1864	SP00LSV.EXE
1120	winlog.exe
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1380	SVCH0ST.EXE
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1120	winlog.exe
1380	SVCH0ST.EXE
1864	SP00LSV.EXE
1380	SVCH0ST.EXE
1864	SP00LSV.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1864	SP00LSV.EXE

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1444	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe
1120	winlog.exe
1864	SP00LSV.EXE
1380	SVCH0ST.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1444 wrote to memory of 1120	1444	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe	27
PID 1444 wrote to memory of 1120	1444	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe	27
PID 1444 wrote to memory of 1120	1444	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe	27
PID 1444 wrote to memory of 1120	1444	021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe	27
PID 1120 wrote to memory of 1864	1120	winlog.exe	28
PID 1120 wrote to memory of 1864	1120	winlog.exe	28
PID 1120 wrote to memory of 1864	1120	winlog.exe	28
PID 1120 wrote to memory of 1864	1120	winlog.exe	28
PID 1864 wrote to memory of 1380	1864	SP00LSV.EXE	29
PID 1864 wrote to memory of 1380	1864	SP00LSV.EXE	29
PID 1864 wrote to memory of 1380	1864	SP00LSV.EXE	29
PID 1864 wrote to memory of 1380	1864	SP00LSV.EXE	29

C:\Users\Admin\AppData\Local\Temp\021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe
"C:\Users\Admin\AppData\Local\Temp\021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Windows\winlog.exe
  "C:\Windows\winlog.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\SP00LSV.EXE
    "C:\Windows\SP00LSV.EXE"
    3⤵
    - Modifies system executable filetype association
    - Executes dropped EXE
    - Drops file in Windows directory
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1864
  - - C:\Windows\SVCH0ST.EXE
      "C:\Windows\SVCH0ST.EXE"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of SetWindowsHookEx
      PID:1380

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SP00LSV.EXE

Filesize
19KB

MD5
836d2fa36f768019167b6ac48f58bdad

SHA1
9e5ed6d4c78c64a09c8c1804f0c68ae0b225ad1b

SHA256
9b387db163f089f6ed9700a96c49899edf59d20a2215d9e4970601eb905f2c72

SHA512
774563e0d923f2dffa82b7f14d07bf318b7845398aa384d8a278693a67cf548754c3288e92a4f5d339aecc90484e6a87b0eea7abf59a89918cc37148edb8a102

Download Submit
C:\Windows\SP00LSV.exe

Filesize
19KB

MD5
836d2fa36f768019167b6ac48f58bdad

SHA1
9e5ed6d4c78c64a09c8c1804f0c68ae0b225ad1b

SHA256
9b387db163f089f6ed9700a96c49899edf59d20a2215d9e4970601eb905f2c72

SHA512
774563e0d923f2dffa82b7f14d07bf318b7845398aa384d8a278693a67cf548754c3288e92a4f5d339aecc90484e6a87b0eea7abf59a89918cc37148edb8a102

Download Submit
C:\Windows\SVCH0ST.EXE

Filesize
19KB

MD5
836d2fa36f768019167b6ac48f58bdad

SHA1
9e5ed6d4c78c64a09c8c1804f0c68ae0b225ad1b

SHA256
9b387db163f089f6ed9700a96c49899edf59d20a2215d9e4970601eb905f2c72

SHA512
774563e0d923f2dffa82b7f14d07bf318b7845398aa384d8a278693a67cf548754c3288e92a4f5d339aecc90484e6a87b0eea7abf59a89918cc37148edb8a102

Download Submit
C:\Windows\winlog.EXE

Filesize
68KB

MD5
a104334f091fba128807dcf115819720

SHA1
ab4dee275193e7a0f2a19f71cfc6d0f69692f424

SHA256
021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0

SHA512
bda7359cc600a26a40f252ff52f36a83605de71adef15c87c4a0fb4cfb5d2f2b1ae633b4549aceaedfa6a69101bdab32571bea2eb283f553a14ae2faf036e34e

Download Submit
C:\Windows\winlog.exe

Filesize
68KB

MD5
a104334f091fba128807dcf115819720

SHA1
ab4dee275193e7a0f2a19f71cfc6d0f69692f424

SHA256
021c586a2cd7d499d6ad5cf59e8f0d5d2babea0a061bb05e3ba07acd24adf8c0

SHA512
bda7359cc600a26a40f252ff52f36a83605de71adef15c87c4a0fb4cfb5d2f2b1ae633b4549aceaedfa6a69101bdab32571bea2eb283f553a14ae2faf036e34e

Download Submit
memory/1120-83-0x0000000003940000-0x0000000003950000-memory.dmp

Filesize
64KB

Download
memory/1120-68-0x0000000003940000-0x0000000003950000-memory.dmp

Filesize
64KB

Download
memory/1120-67-0x0000000003940000-0x0000000003950000-memory.dmp

Filesize
64KB

Download
memory/1120-57-0x0000000000000000-mapping.dmp

Download
memory/1120-82-0x0000000003940000-0x0000000003950000-memory.dmp

Filesize
64KB

Download
memory/1380-81-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1380-72-0x0000000000000000-mapping.dmp

Download
memory/1380-85-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1380-79-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1444-56-0x0000000075D71000-0x0000000075D73000-memory.dmp

Filesize
8KB

Download
memory/1864-64-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1864-80-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1864-78-0x00000000031B0000-0x00000000031C0000-memory.dmp

Filesize
64KB

Download
memory/1864-69-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1864-84-0x00000000031B0000-0x00000000031C0000-memory.dmp

Filesize
64KB

Download
memory/1864-62-0x0000000000000000-mapping.dmp

Download