e9535a6fc2d88256f3ca886694cffd1c52a87fa8382d8e55c364f97f94aa1e7e

Analysis

max time kernel
142s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 01:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe
Size

38KB
MD5

6f6a53bbe62bfd90372a386deef3a0a7
SHA1

7be253ef688571026aab70f3ba4f7a3a310895af
SHA256

e9535a6fc2d88256f3ca886694cffd1c52a87fa8382d8e55c364f97f94aa1e7e
SHA512

27fec1357ad08ed5274d242ec55e2683da460608e0558f35edcae8afd58276dfdea45f5859bb9f8d0bfa1256e8762f795d4843ced9172718c35b1601df22f1eb
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLHwp:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2312-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/2312-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2312-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/2312-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5044	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 2312 wrote to memory of 5044	2312	2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe	88
PID 2312 wrote to memory of 5044	2312	2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe	88
PID 2312 wrote to memory of 5044	2312	2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_6f6a53bbe62bfd90372a386deef3a0a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5044

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
5c1786b5715121ecd703e62a057874d1

SHA1
08081d911d1ae73d998ac3dedfb04ef9e93251d2

SHA256
9058ef8b98d549ba5572e8007767cf6850cb9f53231f5f90981017aad30db211

SHA512
1b69239e44657f276125db9d993f29fbe167ba75825dc611bc172948d0dc1f5280d7271985648db08043e7dbc1fff453588b08dd77a09fc41a1c554b7683701a

Download Submit
memory/2312-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2312-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2312-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2312-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2312-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download