bec2dca699dfde2019a0a25fe9ee66249bf8f49c9592fe9a9d6a7b37571b79e7

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 04:50

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General

Target

2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe
Size

30KB
MD5

e5f4b5318cd7702bd4e20d5d3c952b35
SHA1

bbca2d2c12af3ed3238a8843ad513ca2c659c0ee
SHA256

bec2dca699dfde2019a0a25fe9ee66249bf8f49c9592fe9a9d6a7b37571b79e7
SHA512

09ce42d1dc73b18fb032c27979af6770871a3d95a3def55dad9a8d69938cfa7589b2f2c45fc3a747812febd35e91a465c2af5d9b31a0d2e2365c5d57e2e425d4
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RGf:b7o/2n1TCraU6GD1a4Xt9Re

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023210-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	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 3916 wrote to memory of 3716	3916	2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe	86
PID 3916 wrote to memory of 3716	3916	2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe	86
PID 3916 wrote to memory of 3716	3916	2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_e5f4b5318cd7702bd4e20d5d3c952b35_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3716

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
30KB

MD5
29cec4602a33fe864995ca6848785b52

SHA1
5fdda016228fb6d9cee28da36ed7cb20fb0a75c4

SHA256
34b7d525a2aac10e698f0029cbe7961392fd35462daddc716b673398257b686c

SHA512
2d324ee9c26b5d1c9d65c90c041df5de1c79ae7c96cbad223135440a81d7cd6d4d3d54a1e805f12dbae8d34549becd04ef4a7384413580a0749dbc2b5857ffa9

Download Submit
memory/3716-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3916-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3916-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3916-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download