27ca84e1d2090d4f3f86760f5864913786f073170ee2c53388f24cd88393db94

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 02:48

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General

Target

2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe
Size

42KB
MD5

f383edb1628e2323495f9d347fd81570
SHA1

6d320dfe25e42a06aa74459a91629ad75d6632b3
SHA256

27ca84e1d2090d4f3f86760f5864913786f073170ee2c53388f24cd88393db94
SHA512

05984db81003c1470f533feb2593ed99db64c614c6ebd6d2a9f5981feee454088fa83d2ec42f0dc0ec599d1b646eb7cd28636219412e57a31580a3f535738e66
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqI:bc/y2lkF0+BeqI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002296e-12.dat	CryptoLocker_rule2

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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1792	rewok.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 2500 wrote to memory of 1792	2500	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	87
PID 2500 wrote to memory of 1792	2500	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	87
PID 2500 wrote to memory of 1792	2500	2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_f383edb1628e2323495f9d347fd81570_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1792

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\rewok.exe

Filesize
43KB

MD5
c20b486d88c6e86fd0b2504879dba9dc

SHA1
69f9c64331142331acd98350142b19baa4841240

SHA256
498c12634187a0aaf95a2117fe1ef6980667790c403fcde9b441e7951fabc883

SHA512
752cc29db09a656609d721bea725fa43982bf7ecbebb0f9e904efd45e5db907b86810efdeff793c364bafcdc4c8352eade25e37133e83407e9389d5fd377c686

Download Submit
memory/1792-22-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2500-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2500-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2500-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download