ad5f88e5b2e384a93075e47034be4b8572535283640eb605d17c2ca17158f62f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 05:35

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General

Target

2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe
Size

44KB
MD5

7969a0bcacb63fab789dd5f99fc039c0
SHA1

4f18164f33c7eb006a271a50ea694b3109563c8b
SHA256

ad5f88e5b2e384a93075e47034be4b8572535283640eb605d17c2ca17158f62f
SHA512

6816cd9f176ffa943a05f40f0267e84eacb9e7b0c5b61285d79b280aa9cd3c7b2c2591d750773948fdc58d22699583cab8dc771959e8279ea62a50ffce04a742
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqe:bc/y2lkF0+Beqe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3640	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 3836 wrote to memory of 3640	3836	2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe	84
PID 3836 wrote to memory of 3640	3836	2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe	84
PID 3836 wrote to memory of 3640	3836	2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_7969a0bcacb63fab789dd5f99fc039c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3836
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3640

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
427c96643f0e847930f8a396c419345a

SHA1
b6dc7e8db1d9df6984f12c0a54fedff6e56515e8

SHA256
4d353db72d861bb558e781381a385d2d56214a979c3f794da76e0ccf17ab1da2

SHA512
1360fc4c20f55c45910c1bc9af49094bc410bf932169667c2a423429ef2b2c5006864d40837b4e7e24c7dd7973086a4d51ed61eb9df8aec70df14797b4cc03da

Download Submit
memory/3640-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3836-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3836-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3836-8-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download