cryptodef | 381f1c14eeddc9e885026291eddc39962bab20d9eed21f07083fd1b319fc1ed5

Analysis

max time kernel
150s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
21/05/2026, 03:55

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General

Target
2026-05-21_3e3d3eb5af4be8f65ddcaba3b71fc92b_elex_wannacry.exe
Size 53KB
Sample260521-eg7xcaft5l
SHA256 381f1c14eeddc9e885026291eddc39962bab20d9eed21f07083fd1b319fc1ed5
MD5 3e3d3eb5af4be8f65ddcaba3b71fc92b
SHA1 ad92bd2af8cbaeee0d866ba6ddc0ea8b4ecd10cb
SHA512 40fd3a0aa79a014494bb2477c5311d54d8fc5087ccf76fb2b294b94d77c5c61c95a023d82e0006137b956a055ca73d8b73ddfc07455e2e0638f936ed9d9eb1b7
SSDEEP 768:NHxbwCOVqhe+8YmcuwrvGBETGxtJH7jAKtzkyCzkKiWmpfrjG:fETVqhp8AvGBFswzLKiWmJG
TLSH
T140334338AED51572F37BDE758AF651C7AA747C227902280F4086B3540C33F76AEA5A0D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery cryptodef trojan

Malware Config

Signatures

Family: CryptoDef
CryptoDef is a Windows trojan written in C.
trojan cryptodef

Detects CryptoDef 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000002af1f-4.dat	family_cryptodef

Executes dropped EXE 1 IoCs

pid	Process
2412	eilgx.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	2026-05-21_3e3d3eb5af4be8f65ddcaba3b71fc92b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eilgx.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 2412	956	2026-05-21_3e3d3eb5af4be8f65ddcaba3b71fc92b_elex_wannacry.exe	79

C:\Users\Admin\AppData\Local\Temp\2026-05-21_3e3d3eb5af4be8f65ddcaba3b71fc92b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-21_3e3d3eb5af4be8f65ddcaba3b71fc92b_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\eilgx.exe
  "C:\Users\Admin\AppData\Local\Temp\eilgx.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2412

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

eilgx.exe

Path C:\Users\Admin\AppData\Local\Temp\eilgx.exe
Size 53KB
SHA256 2ceb04978446fcc0f85aa0a45d1df429fb38acac6530bb4eb6739624558ecf70
MD5 1f953d51711c13997e15c12ee64aae31
SHA1 bdfdf0464326473ac7806025b499cf80a8d52f48
SHA512 b9920173d228c6d67b3c73f61460723046a8efcc69786c4a9c8539c8f36302eee45f6240b07c21a25dc4003ca8863bb3ef6d15931bdbbf1e07c2228f12b0a955
SSDEEP 768:NHxbwCOVqhe+8YmcuwrvGBETGxtJH7jAKtzkyCzkKiWmpfrjl:fETVqhp8AvGBFswzLKiWmJl
TLSH
T1A9334338AED51572F37BDE758AF651C7AA747C227902280F4086B3540C33F76AEA5A0D
MD5 SHA1 SHA512 SSDEEP TLSH

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