fb5e10b191033b65c2e7dd34d99f90a15a514b5a5dd13030a75dd06bdd85f73d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 01:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe
Size

70KB
MD5

ddb7e71ba3266c630c84508b4d0ae105
SHA1

3f2c5f3caf7e675c00c245401a8c8b02e1b8d787
SHA256

fb5e10b191033b65c2e7dd34d99f90a15a514b5a5dd13030a75dd06bdd85f73d
SHA512

0b76e5f551b923abe308e37466274eb5c5e2af6c754da3f66fa6868e6b45751940e05459b411d038bae9cbf13f5e2ab5d66cbfad1e17d5bd9e46ca4457af6a63
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUL:DW60sllyWOtEvwDpjwF85V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1268-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f7-13.dat	CryptoLocker_rule2
behavioral2/memory/1268-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/976-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1268-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f7-13.dat	CryptoLocker_set1
behavioral2/memory/1268-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/976-19-0x0000000000500000-0x000000000050B000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
976	asih.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 1268 wrote to memory of 976	1268	2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe	85
PID 1268 wrote to memory of 976	1268	2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe	85
PID 1268 wrote to memory of 976	1268	2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_ddb7e71ba3266c630c84508b4d0ae105_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:976

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
70KB

MD5
28e54ff7281aaf908dc1ee3456a09ea8

SHA1
50869c2b5685c406591307a033bce876cc91c87e

SHA256
f28d2597b6303116c08b96f5422e26d8cad03c92448de3d3db97b4a5ec2347ae

SHA512
852c46ff729d7ee869a52437945441e77ae970fc5d41c5077ca5a1ff065af7afdb5bb15c926a871bbe1c186a279305b525136a2548e8fe0acdb8ce381811bbc3

Download Submit
memory/976-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/976-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/976-22-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1268-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1268-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1268-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1268-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/1268-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download