ff6c3ba44a85536e14d9a528421d2e512cb159c0102a2d84ad662c063128e678

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 12:34

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General

Target

2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe
Size

60KB
MD5

4ffdc9736ffaf21fae185069ae22f840
SHA1

eb4a42df98c41f41601ce00e43c1e31db749f472
SHA256

ff6c3ba44a85536e14d9a528421d2e512cb159c0102a2d84ad662c063128e678
SHA512

bba849777abe4e85128e3f833528c783c1ae128bfffa98fa0ceb435957647dc2f489ee0c9893daa95f3a2473a73e64a1902adaabdec4818d020b49932ed4d3f1
SSDEEP

768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XGP:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2520-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2520-26-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2520	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 1228 wrote to memory of 2520	1228	2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe	85
PID 1228 wrote to memory of 2520	1228	2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe	85
PID 1228 wrote to memory of 2520	1228	2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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
60KB

MD5
4a3956c5924c8f72ba1ad89d11a5e7f4

SHA1
88317e4d2fc98e6c3ef14b9813a82b81985b4dac

SHA256
9ad3225827ccc4c858d97fb73cbfea0776e26a6fbdc028627e3500003aa33c24

SHA512
7577126290717b1a0b072aeef0311ec7a3aa5acf354fa8fbd93dd2d46f73d910340adad8b67d1bbb28866a1cc76618c421517a4264882a743d013752b74f562f

Download Submit
memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1228-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1228-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1228-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2520-20-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2520-19-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/2520-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download