Analysis
- max time kernel
145s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
29/02/2024, 01:56
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe
Resource
win7-20240221-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe
Resource
win10v2004-20240226-en
6 signatures
150 seconds
General
- Target 2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe
- Size 65KB
- Sample240229-cctg2sag41
- SHA256 c2290e4375d8a7c365ea2a96446ace29ce712bd245893cdd94538430f9133a60
- MD5 e3d9f6e323aac9d99bd436c320f1f3ca
- SHA1 9e5164b95c19d143b39e28a09a55c70dc6aa00c9
- SHA512 97c47f0edf8e480f180b39f104939f7796490dd1a0a374d1685da1cfb680b29d58986d948f528bcaabfcd1b2953bcb195a0b23ffdde983f79c11151a19b3984b
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HyCyh7vtRJ4BqKb1knzhv:vCjsIOtEvwDpj5Hv0J
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023209-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023209-12.dat CryptoLocker_set1 - 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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation 2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 3616 misid.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3044 wrote to memory of 3616 3044 2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe 91 PID 3044 wrote to memory of 3616 3044 2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe 91 PID 3044 wrote to memory of 3616 3044 2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3616
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 65KB
- SHA256 0e33ad1eba29451d7b5132d21091b4fa24e52d52940c224cbb3df9da7f004afe
- MD5 b1d7e28ed22adaf40a6de807a9bd26c7
- SHA1 bb5860967be3b4d7a9f6c77830f3bfb57782b455
- SHA512 3ffbddc87a5ccacab1618cdb13b39ce994f3e9aaa4e875dc17af08251f82eb9d13bdb528bacc9ff72b00cd2bac156cf645f91f37d83c72834efe95cc8b92d804
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HyCyh7vtRJ4BqKb1knzhu:vCjsIOtEvwDpj5Hv00
- MD5 SHA1 SHA512 SSDEEP