46460b48fb1852ffea36167f562bf491305e5a908983e2e71bb7a7cdc4d5cfe8

Analysis

max time kernel
133s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 04:46

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General

Target

2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe
Size

64KB
MD5

e5d8c9cec6b6fa7cc773ad84d8a921e2
SHA1

80e4e88dcd596be50a23212710dd07d193ab698b
SHA256

46460b48fb1852ffea36167f562bf491305e5a908983e2e71bb7a7cdc4d5cfe8
SHA512

f6f7d73965be52bae22dc06672a7c1922303fb8da94de16e048011dfe2f2c111661ae9898467d99e2a6fc104835fc57fb0c13906047fe94fe165f8e425893fda
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299efA:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b33-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b33-12.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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2392	hurok.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 880 wrote to memory of 2392	880	2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe	84
PID 880 wrote to memory of 2392	880	2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe	84
PID 880 wrote to memory of 2392	880	2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_e5d8c9cec6b6fa7cc773ad84d8a921e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2392

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\hurok.exe

Filesize
64KB

MD5
15bceb7eb0b8a7e8e377ee54a7edf61e

SHA1
bd073cdd7d5e792831622557d68b87ad43a23d43

SHA256
ab66b6b33194173ad5a642c215b7ecd66c786a16383a37fb07c22d1cf7cf264b

SHA512
2b841a6ee1d1b93efbc1bea6f7df8a165dad6f80cd9e9efdea203d6a21b4d81980aa0192ee1965ac9687c66e12ba3c9608c9336a0f861a5379862e8857b2b61c

Download Submit
memory/880-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/880-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/880-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2392-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download