4059e1084b7e064ba456a1d6220d690b58ed709ce26dbda959a8f2124459e089

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07-03-2024 23:39

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General

Target

2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe
Size

40KB
MD5

b5ac90d675555e9298fe451d411b9f5a
SHA1

a32e5b15a80eb24d8e6f3477d1d3b17b39ba6532
SHA256

4059e1084b7e064ba456a1d6220d690b58ed709ce26dbda959a8f2124459e089
SHA512

cd16a202148331d0e5d2fe1a14a2b971a6b4ddf199800d32e2bdd800919acc7b45ce9b4991df25ea32f156a092961785c0ebfc530e9b94755e7462e8c86b932a
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc660SV:vj+jsMQMOtEvwDpj5HW5E

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023213-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023213-12.dat	CryptoLocker_set1

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4760	misid.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 5112 wrote to memory of 4760	5112	2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe	83
PID 5112 wrote to memory of 4760	5112	2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe	83
PID 5112 wrote to memory of 4760	5112	2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_b5ac90d675555e9298fe451d411b9f5a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4760

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\misid.exe

Filesize
40KB

MD5
c0d1fe3d95e9faa8fe8b4fc47bdb8a12

SHA1
2fc9ee89d13b7016aa96ce6a7ce3f6c8d2c8bba8

SHA256
63bf32cba5389fb568bbe9e294502f2510413294cf784a1ae8a02ad1daaf0d73

SHA512
4877b55534f3806979f79962a0ea03ae35f7a16943941ed10413d97c95410b5a0ef37769c557e703a07fa6cfe7fad3a2c2aeb871769ba5af96857d9b495cecfe

Download Submit
memory/4760-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4760-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5112-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5112-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5112-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download