4fd703d3fc26b5cdc8275cda48035a6ef120854fb17597a5b1607669c3b79d86

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 00:28

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General

Target

2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe
Size

129KB
MD5

2a1974e0da5965913e92c236f3cff47a
SHA1

41cc71f1986916132a8f35e223a628eab03e36c8
SHA256

4fd703d3fc26b5cdc8275cda48035a6ef120854fb17597a5b1607669c3b79d86
SHA512

61d5105734345ed837bce4ce3b5f4aa390690b36c5006c39a945ab33dddd602c4cc45901c5b61498e1e8ab39ee76f86e3481a4e60b04339d0d27c3ff5581579e
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//LIT4d:vCjsIOtEvwDpj5H9YvQd2RR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4676	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 2960 wrote to memory of 4676	2960	2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe	85
PID 2960 wrote to memory of 4676	2960	2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe	85
PID 2960 wrote to memory of 4676	2960	2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_2a1974e0da5965913e92c236f3cff47a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4676

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
129KB

MD5
4eddb96cdf04a87893d48338d01189f9

SHA1
5906aef42fc6f6a4418f881892dbf46fd30c144a

SHA256
fdcb4fe2b142abe40433d1db8e2e933ca3f839bf6ab2d08227e76a28dae9f1de

SHA512
ed629d3534c7545105c1dddf7e83fdb64b73843385bec00b1f300b72cb9422a1daa55d4ad53e71a7a959ca824d32dcc16a1eeebf9acc86aca5fca7ba450bfacf

Download Submit
memory/2960-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2960-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2960-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4676-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4676-19-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download