8c6dd549b6fb32f8815d415c6b7ffe0e71114cd3af1c96b17dcf22e4e79e0eec

Analysis

max time kernel
135s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 04:25

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General

Target

2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe
Size

41KB
MD5

3370a742834a6e4873a186a27f31c61e
SHA1

b77c4b0c0597a13e6cedf52608e9e1eb1f5c058b
SHA256

8c6dd549b6fb32f8815d415c6b7ffe0e71114cd3af1c96b17dcf22e4e79e0eec
SHA512

0862bfd2567809d5cda570a482b9318840f3917c9de2852201ce8c28f18b9917537232235f4fff730967faff30baa018f938d2d248456f02b5ff021ff459a53b
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Ey/A:btB9g/WItCSsAGjX7e9N0hunKLYNOZN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002343b-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
5060	gewos.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 5060	2808	2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe	85
PID 2808 wrote to memory of 5060	2808	2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe	85
PID 2808 wrote to memory of 5060	2808	2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_3370a742834a6e4873a186a27f31c61e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:5060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
41KB

MD5
33a8b824ede98f3b8286fd0cc6032100

SHA1
a22f41cdec623e1a03e1bc04d58a7cbfd0c0ca69

SHA256
408d7f2c744b13317baff85aa793e7530f2f07d4f4f3c90fc539f26fbcb6d637

SHA512
38c63229f14b062bbd79c44faf7f870763190647c9f75fe2c47f204a5d93fdc09bb363c321800860d1adcc5582a2bfa8f9e4f784f9fd64fcc134c6358a1bf451

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
3842c96c28eaec4440ac965398c10565

SHA1
2606117076a25bba51b3048ec651df98b79bd577

SHA256
cc6db1a8a225e20b4a83597d8bca7a23efacafea61859fa1d86ffdbbf9f6a576

SHA512
5f04dc089b4030f47ce9a784a2084d9c38cb9d74935fc90d1a6e26df4c277368c93643523942897f13a4dcda13567f9e544d9ac6c3460d8034d5c9bda68baab3

Download Submit
memory/2808-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2808-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2808-7-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/5060-25-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download