e91d002438dce46443bb245d608d5b6e5db4f4b8366c4ebc914fe3afd78f3d1a

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 21:45

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General

Target

2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe
Size

74KB
MD5

f34063e743f30c1a415b8ea9c4553a7c
SHA1

dbe9bf16d5faa0c0ad04a1e0932d4cf52444906a
SHA256

e91d002438dce46443bb245d608d5b6e5db4f4b8366c4ebc914fe3afd78f3d1a
SHA512

c5031182ca2ab3b9236d5dabed70c0956786cfe00cb63547b66d0f919c56cea4db0378104c63dec447039679bd610ea2ded583d5a661b027aba9f4876ac2cd73
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sil:X6a+SOtEvwDpjBZYvQd2f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	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 4432 wrote to memory of 4744	4432	2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe	89
PID 4432 wrote to memory of 4744	4432	2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe	89
PID 4432 wrote to memory of 4744	4432	2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_f34063e743f30c1a415b8ea9c4553a7c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4744

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
75KB

MD5
56fae8d34941bd844740b5b68118e446

SHA1
979ae10a7d58dee7767bc7443bd28ba5b2e77142

SHA256
77bf915337a0a8d92982e21003ce81421e7903886c12b3b434a448e62d8c694e

SHA512
0bdbf2c97cb3ade65ea6ce135695dd7d10b0ab1c3a76c269d32e4ffbaee2614f9f8298caf8f07c988b88429503791b4b2b30a7d9785a2f571c56be89f655cc73

Download Submit
memory/4432-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4432-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4432-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4744-18-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4744-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download