f57c24c7461d67e55443fd09f1435b75947e2a0fa373317aef0158b2f9d779ed

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2024, 20:48

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General

Target

2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe
Size

49KB
MD5

d39be122e002879b51f0c37bc498e76e
SHA1

56d94189d90e46a8dcc20f245b4a68953f4e181e
SHA256

f57c24c7461d67e55443fd09f1435b75947e2a0fa373317aef0158b2f9d779ed
SHA512

97ce24a8007cefa0f8e811706a99d3e81764b1a7c5b8789a94f2cc96bac711fbdc2fe7e330e7adcef354d61e76a29afeeadf83dbb16b17b1d70d492a83029527
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3Sp8LM:79mqyNhQMOtEvwDpjBzckqSuw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2528-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0005000000023284-13.dat	CryptoLocker_rule2
behavioral2/memory/540-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2528-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2528-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0005000000023284-13.dat	CryptoLocker_set1
behavioral2/memory/540-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2528-17-0x0000000000500000-0x000000000050F000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
540	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 2528 wrote to memory of 540	2528	2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe	82
PID 2528 wrote to memory of 540	2528	2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe	82
PID 2528 wrote to memory of 540	2528	2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_d39be122e002879b51f0c37bc498e76e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:540

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
49KB

MD5
9148a6457b273696bab0b23f3348debd

SHA1
ad9f2b584ff886cb9c9b87abcccc977021bcaf19

SHA256
46f0ce5884187f2e87d467d228f4c22ae2168156ebec7409f5a0b326ee42e529

SHA512
b3a7b33355bd38e31a4615b24cd12f43dccf3d24ab2158e3ad3252f41a1140cf540d8ad3bf4c638704e8c450d4a484c89c3e60aaf05c360916a0ca243cfdf86b

Download Submit
memory/540-26-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/540-20-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/540-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2528-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2528-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2528-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2528-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download