181c56341da9aeba00ad999ea6290f9d2419853cb54925876e3859a8eac6d1b4

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 05:45

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General

Target

2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe
Size

61KB
MD5

fbe5584e2a9468f8565f314e3162857c
SHA1

e638544a79abb5cc6c1361bd2ee7d0573e974c25
SHA256

181c56341da9aeba00ad999ea6290f9d2419853cb54925876e3859a8eac6d1b4
SHA512

f9b23ef5bb9cc559ed39e0a494e39e13f7d12e890cb858d9f1f2f7aca8a9296c2eb82f1b31224df34b2fbbfad79eb5ec404509e24c6c99d27811cce3294d3b12
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB16:vj+jsMQMOtEvwDpj5Hy7B3gG8xzUA2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023234-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023234-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2388	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 2940 wrote to memory of 2388	2940	2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe	89
PID 2940 wrote to memory of 2388	2940	2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe	89
PID 2940 wrote to memory of 2388	2940	2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_fbe5584e2a9468f8565f314e3162857c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2388

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
61KB

MD5
cea7c43f16754d07eb2ac1e5c0beff5a

SHA1
78bd995606a7b062763289bb539595bfc17a4dc1

SHA256
91dc49251edbf5137dc169497f87686dacab28efbd2c193af6563605b32d6ba1

SHA512
224e51e9c7a55d0c6a77c7cab814fd5794304bbebe2622a0a2f8beb514fedf9b60745db1ff551b97870530df169b037bc3b8d79c0eea77dece9d63409ddf8dfc

Download Submit
memory/2388-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2388-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2940-0-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2940-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2940-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download