4f592a5af9d89c3e8e4b6ac5576a5f2e8b75f3bebf21383b56df8690f1e0c0f4

Analysis

max time kernel
147s
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
27-03-2024 19:34

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General

Target

2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe
Size

31KB
MD5

8ae03307bbe84a90233d5e1a9f74c933
SHA1

e2fb2de76ba76158eb36a67c8a00fb588d9faa7e
SHA256

4f592a5af9d89c3e8e4b6ac5576a5f2e8b75f3bebf21383b56df8690f1e0c0f4
SHA512

67e1fcebc803e86b85fb70eeca89555e0b2779c96c50021db812b4a75b20338aaf5e3d81fbd946ee3f29e9487e8370eb2896e01d9a72a319e52b25274b8e6508
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuah0G1+24:bAvJCYOOvbRPDEgXRcN1w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023243-12.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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	demka.exe
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
388	demka.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 2000 wrote to memory of 388	2000	2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe	86
PID 2000 wrote to memory of 388	2000	2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe	86
PID 2000 wrote to memory of 388	2000	2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_8ae03307bbe84a90233d5e1a9f74c933_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:388

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\demka.exe

Filesize
32KB

MD5
391e85fa82cd55eac82d2130be433603

SHA1
1700cbe6011596092ec4c2026cd1055e721f46c7

SHA256
6106716de1dd1b9b9487c74c9d50c69c40af4871c7d56908400fac0098ffff06

SHA512
ef25d1eabd9cc29e195a69bc3a01a0dabbd2d1db76cf3db948a64a93656db336886d9b99ad0e62de7f86c6f78ee7feee00ad1118091876070919b1a6eacbe2c1

Download Submit
memory/388-20-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2000-0-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2000-1-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2000-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download