924e65377b7b65ae4e0e3a838e935973591671c13d8c74204ff0ec7b846c2fa6

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 18:44

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General

Target

2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe
Size

126KB
MD5

26afe21ab5ffa2a1d0d44967bdf7a445
SHA1

e91d04f0db0af1dbdc03beb62c4b805a4bb6ca4c
SHA256

924e65377b7b65ae4e0e3a838e935973591671c13d8c74204ff0ec7b846c2fa6
SHA512

e00f9690ec941b04bb459fad62d2395ea499ee48401a97a57de350742ed06f458f6a8e6ee5ebb2ddacb35b7ff63f78475d07ed481b0d7c89bb517a71885c066f
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpR/zV:vCA9OtEvwDpjT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002321e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002321e-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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation	2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4412	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 4516 wrote to memory of 4412	4516	2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe	88
PID 4516 wrote to memory of 4412	4516	2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe	88
PID 4516 wrote to memory of 4412	4516	2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_26afe21ab5ffa2a1d0d44967bdf7a445_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4412

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
126KB

MD5
f4431ba59a076abb00d43c6002811300

SHA1
3b951bd28c4a0613d3823007fd576453d1bdf456

SHA256
c8c2506a84093ab5ac0d53843c1acaf0a6ece1ea8bb621d15434ac8afa24c9ab

SHA512
a307108ea31d60bed013f339b5108559f2126171de843462dd3fcf5e04dbdcb199305f56da68826ce0c481fe2f10b00c0fe8deadd6ab55b5509f0a173083e1ca

Download Submit
memory/4412-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4412-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4516-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4516-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4516-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download