2e6b3da16ac51388eeff8abe2ee6ef786d22691d4e65e6444f211e598ebc45d3

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 16:44

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General

Target

2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe
Size

36KB
MD5

c142dfa604169bf561ceeaf2e6a3c293
SHA1

d33b2cb521f96d019778b73a38de473de3babfdf
SHA256

2e6b3da16ac51388eeff8abe2ee6ef786d22691d4e65e6444f211e598ebc45d3
SHA512

66114e1586217a65b0e6502454d6bee22e760f1a9eae281354cbc9b8c8d25269e167e54ca6b75b0b58f06ec236041c8b02cd69fa073ba152d55e73b362636e62
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUqMV6U8zKvGaLLA4:bA74zYcgT/Ekd0ryfj86U8zbCA4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f8-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4908	hasfj.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 2496 wrote to memory of 4908	2496	2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe	88
PID 2496 wrote to memory of 4908	2496	2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe	88
PID 2496 wrote to memory of 4908	2496	2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_c142dfa604169bf561ceeaf2e6a3c293_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4908

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\hasfj.exe

Filesize
36KB

MD5
00286b219cfc990345976f00de7965b4

SHA1
b7ce543103a540c5b88d36b31584625b39327922

SHA256
79f0667c398570199dd5675fbdd2edddf4fe23177e20af93e89d77c3e6c3c60b

SHA512
63f0568aa0fb511a30175e272bf3ddf5ffa00c2ccc30fe83854384ab584dbb3edf7e2dbf45bce0be73b1c2575e2565ed5aed7a5d7b0b04a2b757d6109db2a45f

Download Submit
memory/2496-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2496-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2496-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4908-18-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4908-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download