581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff

Analysis

max time kernel
155s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11-10-2022 15:28

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General

Target

581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe
Size

388KB
MD5

18dffd2bf006851840e94917bc3b6360
SHA1

64ac0c415fc431a899b6a650121834a1d82766e5
SHA256

581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff
SHA512

3aa3a1e5e714c1ebb183cd4ed5960ab3076c1c107467454d4821d99c56cffa71e83c8ff9fc0e91f2c424812f339f2b688db7c745b2ce6998156f08097f67065d
SSDEEP

6144:QgSaGD36TE5kVFlYerDOyT5MDZCu7hCx99sd6+ZXfx7u2GT6zQBui6MOoJ7nc:QY4q7jjvGDZCuw99m7XfVGTGQwi6u7c

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	sysmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\788547\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 4 IoCs

pid	Process
32	winpytunalpes.exe
2324	winpytunalpes.exe
4716	sysmon.exe
3164	sysmon.exe

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	winpytunalpes.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	winpytunalpes.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	sysmon.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\788547\\sysmon.exe\""	sysmon.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	sysmon.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	sysmon.exe
File created	C:\Windows\SysWOW64\clientsvr.exe:ZONE.identifier:$DATA	sysmon.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 32 set thread context of 2324	32	winpytunalpes.exe	94
PID 4716 set thread context of 3164	4716	sysmon.exe	98

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

System Information Discovery
T1082

NTFS ADS 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\winpytunalpes.exe:ZONE.identifier	cmd.exe
File created	C:\ProgramData\788547\sysmon.exe:ZONE.identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
2324	winpytunalpes.exe
2324	winpytunalpes.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe
3164	sysmon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4632	581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe
Token: SeDebugPrivilege	3164	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3164	sysmon.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 32	4632	581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe	85
PID 4632 wrote to memory of 32	4632	581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe	85
PID 4632 wrote to memory of 32	4632	581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe	85
PID 32 wrote to memory of 4320	32	winpytunalpes.exe	92
PID 32 wrote to memory of 4320	32	winpytunalpes.exe	92
PID 32 wrote to memory of 4320	32	winpytunalpes.exe	92
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 32 wrote to memory of 2324	32	winpytunalpes.exe	94
PID 2324 wrote to memory of 4716	2324	winpytunalpes.exe	95
PID 2324 wrote to memory of 4716	2324	winpytunalpes.exe	95
PID 2324 wrote to memory of 4716	2324	winpytunalpes.exe	95
PID 4716 wrote to memory of 3348	4716	sysmon.exe	96
PID 4716 wrote to memory of 3348	4716	sysmon.exe	96
PID 4716 wrote to memory of 3348	4716	sysmon.exe	96
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 4716 wrote to memory of 3164	4716	sysmon.exe	98
PID 3164 wrote to memory of 2324	3164	sysmon.exe	94
PID 3164 wrote to memory of 2324	3164	sysmon.exe	94
PID 3164 wrote to memory of 2324	3164	sysmon.exe	94
PID 3164 wrote to memory of 2324	3164	sysmon.exe	94
PID 3164 wrote to memory of 2324	3164	sysmon.exe	94

C:\Users\Admin\AppData\Local\Temp\581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe
"C:\Users\Admin\AppData\Local\Temp\581d1f7ae1d329cf7805dbae694535f673b1ac9f875fddfa0543d6ea696151ff.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Users\Admin\AppData\Roaming\winpytunalpes.exe
  "C:\Users\Admin\AppData\Roaming\winpytunalpes.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:32
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\Users\Admin\AppData\Roaming\winpytunalpes.exe":ZONE.identifier & exit
    3⤵
    - NTFS ADS
    PID:4320
- - C:\Users\Admin\AppData\Roaming\winpytunalpes.exe
    "C:\Users\Admin\AppData\Roaming\winpytunalpes.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2324
  - - C:\ProgramData\788547\sysmon.exe
      "C:\ProgramData\788547\sysmon.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:4716
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c echo [zoneTransfer]ZoneID = 2 > "C:\ProgramData\788547\sysmon.exe":ZONE.identifier & exit
        5⤵
        NTFS ADS
        
        PID:3348
    - - C:\ProgramData\788547\sysmon.exe
        
        "C:\ProgramData\788547\sysmon.exe"
        5⤵
        Modifies WinLogon for persistence
        Executes dropped EXE
        Adds Run key to start application
        Drops file in System32 directory
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3164

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\788547\sysmon.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\ProgramData\788547\sysmon.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\ProgramData\788547\sysmon.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\ProgramData\788547\sysmon.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\sysmon.exe.log

Filesize
223B

MD5
cde6529abeea500fb852f29ba0da6115

SHA1
45f2f48492417ae6a0eade8aaa808d3d1d760743

SHA256
d7f4964443470b6729865676d76f5f1f416da633033071c34ea5eb19cdea53b5

SHA512
c95fa7faf6a90f32060dba70f79c4d66c68d6eec587306fb98f36fc3ba5d377ebf9dabf47298b71db208fb10f7ccb4e0ed82236c8f26bcc746552588bbb38234

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\winpytunalpes.exe.log

Filesize
223B

MD5
cde6529abeea500fb852f29ba0da6115

SHA1
45f2f48492417ae6a0eade8aaa808d3d1d760743

SHA256
d7f4964443470b6729865676d76f5f1f416da633033071c34ea5eb19cdea53b5

SHA512
c95fa7faf6a90f32060dba70f79c4d66c68d6eec587306fb98f36fc3ba5d377ebf9dabf47298b71db208fb10f7ccb4e0ed82236c8f26bcc746552588bbb38234

Download Submit
C:\Users\Admin\AppData\Roaming\winpytunalpes.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\Users\Admin\AppData\Roaming\winpytunalpes.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\Users\Admin\AppData\Roaming\winpytunalpes.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
C:\Users\Admin\AppData\Roaming\winpytunalpes.exe

Filesize
360KB

MD5
9930c0ded85fd2bd0bcf7f9c4ad5b0e4

SHA1
2d4ee4622e912ab49593a2b07d14ea98f876de9d

SHA256
554d3138ed9db137bde34864a9e8216f837d6b899588b35162ea79336a9da80b

SHA512
b74b9da9766fc4b9235890b34d67b697ce91920adaf1b2c612fb5bca108926f3b163e3b65775fa7cd56e20cc185cb5381f9d6c45befcabffce37ea3f11afcff8

Download Submit
memory/32-145-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/32-139-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/32-137-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2324-146-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2324-166-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2324-163-0x0000000006000000-0x0000000006017000-memory.dmp

Filesize
92KB

Download
memory/2324-151-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3164-155-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3164-160-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3164-164-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4632-132-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4632-133-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4632-138-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4716-152-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4716-150-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/4716-159-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download