58d3994ee7bab73f97993cee3b2e05862c36df7045f26003db465c0692b93b88

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240220-en
resource tags

arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 11:38

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General

Target

2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe
Size

50KB
MD5

942e05ca457134297db8e31fc1140874
SHA1

33800b7ae658ca75c4afc63827afbc6f53ac2414
SHA256

58d3994ee7bab73f97993cee3b2e05862c36df7045f26003db465c0692b93b88
SHA512

a2dc5e14b02a46410d6264e1e7c4370385d02b39622007932ba59e394f78874562c0eeaaee6a58edef561d7782ce3fdd02b244e51ab2f07f2bdf8420f0f51619
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlca96Xg:X6QFElP6n+gJBMOtEvwDpjBtExmlFv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0011000000023113-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0011000000023113-12.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-1-5-21-1888637039-960448630-940472005-1000\Control Panel\International\Geo\Nation	2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	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 2412 wrote to memory of 3836	2412	2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe	87
PID 2412 wrote to memory of 3836	2412	2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe	87
PID 2412 wrote to memory of 3836	2412	2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_942e05ca457134297db8e31fc1140874_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3836

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
50KB

MD5
7efdbf7cda8246307c11b9fd9c319139

SHA1
7668e415512800d194061e7c331244c761080fd4

SHA256
69e4eaa4fc63993573e08b429b16e717083d7c9518b4a0606d9e19a432d5f3b2

SHA512
4233964d8651e0e9de988d01623bcbb6fca3e5a2660d0024f829707ea89c7e111c9d142df2f29a93df5bfda54ad8df8de8a2dbb3480419ef5e696ee78a880d03

Download Submit
memory/2412-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2412-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2412-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3836-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3836-23-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download