5bb130711feea903d970a3cf967ea4a2a0b764f3c7df853efaf3bfc8e10bcfe2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 12:02

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General

Target

2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe
Size

96KB
MD5

9a8ef85b59cefafb4ef7ffb66190ba48
SHA1

b5194390c70ded99351fa98953dd6f2b295d58ca
SHA256

5bb130711feea903d970a3cf967ea4a2a0b764f3c7df853efaf3bfc8e10bcfe2
SHA512

9d905af80557fbcc77c638ad8b4e25a97642d55b6d53e7c21f42dd582d60ff79ee2795682333435884c4d60f0bd1bb7aff1740ff5c833d1488915fd5aec027bc
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0e:V6a+pOtEvwDpjtzm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1952	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 4816 wrote to memory of 1952	4816	2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe	83
PID 4816 wrote to memory of 1952	4816	2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe	83
PID 4816 wrote to memory of 1952	4816	2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_9a8ef85b59cefafb4ef7ffb66190ba48_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1952

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\asih.exe

Filesize
96KB

MD5
5082a769addf8bde05c47c226d6f1d47

SHA1
24f7b5c22525f004dfa69da86a2612c40783d564

SHA256
68537a67c83cb779b77cacfd484e44ab6e32eed40c6a69f45f7c58b1461d1483

SHA512
c7e6778123905c8656c2255e1c6eabb4e719aac2873fc2522d4374a263c6fb3ece6517ffe60fcd8a4561d8e70d51383baeffa14b5f7535f628850a5c3a041e35

Download Submit
memory/1952-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4816-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4816-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4816-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download