4832be9331c641407a7a0c1d391367d52bcda41079a7f029397ee00ca75abecb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 05:46

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General

Target

2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe
Size

44KB
MD5

80817319c379f0ff00298a7c287dd560
SHA1

7cadd107d4c73353a28985cf5956a015a22da130
SHA256

4832be9331c641407a7a0c1d391367d52bcda41079a7f029397ee00ca75abecb
SHA512

7f58b7e45c7b745663c41be0cf23c010e63da66c431b579046fc8f04aa959804fde9b365ba43869ab20e82caac8ca61be33176e713dc54db17e4c2b74bbf82c3
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphej6NTG:bc/y2lkF0+BeVi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000022a9c-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5096	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 1656 wrote to memory of 5096	1656	2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe	84
PID 1656 wrote to memory of 5096	1656	2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe	84
PID 1656 wrote to memory of 5096	1656	2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_80817319c379f0ff00298a7c287dd560_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5096

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
44KB

MD5
4d61955365c63ebed7575e6707e64aa4

SHA1
81d514fa7396aa3f4a5ce28745c0ff7d4ab27855

SHA256
4a7d97e0c1cb0ac639ab4f17e84b76001afde9e2b74cf79ec9e365d9011ece47

SHA512
c9aff916222ba5855ab1f222540b74227e4be3d3cd924a86a431f73c996dcb121e0aab2637fd324bfa5f190935778db25e1219f0f5beb93d0a66302ff3068bac

Download Submit
memory/1656-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1656-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1656-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download