Analysis
- max time kernel
149s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
06/07/2026, 10:16
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260629-en
5 signatures
150 seconds
General
- Target 2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe
- Size 41KB
- Sample260706-maxf2adv41
- SHA256 399f0b6a48b4ea5593af38f6f472ab75e1186f9655eaba6bd99ea8828d8f726e
- MD5 8f039df78bbba481d0c5fcebc260f20e
- SHA1 3afd6c4579100574f7239a7f370e6176a364d7eb
- SHA512 9c1e6e4b1e863e15245a63018ee3a9784b3020290627f963de302183f53a2b13f49660bed4e7ae5b117b4f3871b3c359436898c26673af869716c3972d2905cb
- SSDEEP 768:btB9g/WItCSsA5dAXwr3BGub4PnPXHSZl:btB9g/xtCSqOxGFPXHSZl
- TLSH T1FB1364347FE55A72D377C6B645F3E1C2A976BC227916D91D91CEA3480833B02EC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral1/memory/2760-2-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000242bf-13.dat CryptoLocker_rule2 behavioral1/memory/2456-19-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation gewos.exe Key value queried \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation 2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 2456 gewos.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language gewos.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2760 wrote to memory of 2456 2760 2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-06_8f039df78bbba481d0c5fcebc260f20e_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2456
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
- Size 42KB
- SHA256 c5b8d2b3eb95da5f0044f8b3bd32c64a4b9f020481c9618f6d3b791adc042760
- MD5 22d538c792e59ab5188e076b06522e00
- SHA1 6ee31af5ff242ef12ec98f8434f43d431f50cb3c
- SHA512 d811fc15e9d3974b83c985df771535d1e7b3e1cd49ec71d7b4ff30343a0936d9a12c63561b48e23fed18e523baeddc786c39ce8b850fff10b08d3bba0311144c
- SSDEEP 768:btB9g/WItCSsA5dAXwr3BGub4PnPXHSZd:btB9g/xtCSqOxGFPXHSZd
- TLSH T1551364347FE55A72D377CAB645F3E1C2A976BC227916D91D91CEA3480833B02EC90A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
- Size 183B
- SHA256 98363534ad4a5f899889144df284bc070fa009fb5af21c9b1753b66bac3ef0ab
- MD5 36bee7a7a7ad51988a0855d4ff93486f
- SHA1 c9f03e953121d25d909b8c6e47a9ab88fa0b60a5
- SHA512 165022afa212d26b6dc4d0bd25385e8db3de9f4abe4c6e9455e937d96ffe50560f520d578d2f90dd06c7bd4f0b7ec3095533e29d6545604fc382bd8db84ffde3
- TLSH T160C0C0F2C810C85704153636CC81321515137D0CEF845C34C0C936CDC6F0FB20E01504
- MD5 SHA1 SHA512 TLSH