1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/08/2026, 16:03

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General

Target
1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
Size 2.4MB
Sample260825-thbb4a11dv
SHA256 1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c
MD5 0fbdd5f4ebc0b8440445aa4af6b0d783
SHA1 a82c8cfd58a34e32b38166743a36bfc77c054dd3
SHA512 ca1952c78981b12f60ff4e58cb6ecb43be8987fe3f17aa4689926ade8ce59e693c386ef1fc7bd63e5a1b438b3381d63106af331771ab2a4794661b03613369ed
SSDEEP 12288:65h3PhAT+T3YJZ7djjyRGt87O7aXp5eZ6:63PGa3YJv3pjaXp5
TLSH
T1D3C54C26F690C833D1321E389D4B86949C26BE503E38DD4B3BF95E4C5E7978179262E3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 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-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe

Executes dropped EXE 1 IoCs

pid	Process
4388	Tcv.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Discv.dll	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
File created	C:\Windows\SysWOW64\Discv.dll	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
File opened for modification	C:\Windows\SysWOW64\Lcv_sys.exe	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
File created	C:\Windows\SysWOW64\Lcv_sys.exe	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ink\mip.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ink\TabTip.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\7-Zip\Uninstall.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ink\ShapeCollector.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\7-Zip\7z.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zFM.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\OFFICE16\LICLUA.EXE	Tcv.exe
File opened for modification	\??\c:\Program Files\7-Zip\7zG.exe	Tcv.exe
File opened for modification	\??\c:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe	Tcv.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\winstart.bat	Tcv.exe
File created	C:\Windows\winstart.bat	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
File opened for modification	C:\Windows\winstart.bat	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
File opened for modification	C:\Windows\winstart.bat	Tcv.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Tcv.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4236 wrote to memory of 4388	4236	1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe	86

C:\Users\Admin\AppData\Local\Temp\1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe
"C:\Users\Admin\AppData\Local\Temp\1a1f2b69282ebe1dee5ddd6daa0587584b1bd78ba3e6ded0c5084396efabb67c.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Windows\TEMP\Tcv.exe
  "C:\Windows\TEMP\Tcv.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4388

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Tcv.exe

Path C:\Windows\Temp\Tcv.exe
Size 2.4MB
SHA256 b724723ffee76185622da682f39aecd9cc0354bf49da05fc6b64cb389a4812ad
MD5 50bfc9884f6d558b05c7f3741c3d9ab7
SHA1 6208afd9dcb171576776a8f820297c3427173d62
SHA512 05ca284fef8dede99f99cacbe078797222e2a192e66f1897e7198c018ef84680a63bd2cfaff75e874a35b78d224da0226f918d69324120b88f999629a1b3d237
SSDEEP 12288:65h3PhAT+T3YJZ7djjyRGt87O7aXp5eZ6:63PGa3YJv3pjaXp5
TLSH
T18AC54C26F690C833D1321E389D4B86949C26BE503E38DD4B3BF95E4C5E7978179262E3
MD5 SHA1 SHA512 SSDEEP TLSH

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winstart.bat

Path C:\Windows\winstart.bat
Size 422B
SHA256 b272167a1dffc3c73e53edc84d2cd59145c51c374b5b67bd5e2725a179da93ec
MD5 09803d071318974890e67f0811e6c81e
SHA1 31cdea8e9f9c5d8f374fcb99f483b4a6f4acbe9f
SHA512 01f8a2cb92d668c2efd1e3d80faa13fc2361945e9ed8db54dab457050afbdb5433b0a2053834cf08478d37916cddefa8174fc4717cc6cf7350d50789406bf5c4
TLSH
T167E08C0805B48646C8620993029B474C9B68F5C3BA002B08724C81CAEFA0009C88046B
MD5 SHA1 SHA512 TLSH

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memory/4236-0-0x0000000000400000-0x0000000000476000-memory.dmp

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memory/4236-1-0x000000000045D000-0x000000000045E000-memory.dmp

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memory/4236-2-0x0000000000400000-0x0000000000476000-memory.dmp

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memory/4236-70-0x0000000000400000-0x0000000000476000-memory.dmp

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memory/4388-68-0x0000000000400000-0x0000000000476000-memory.dmp

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memory/4388-69-0x0000000000400000-0x0000000000476000-memory.dmp

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memory/4388-73-0x0000000000400000-0x0000000000476000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads