d7d831687db3380ab62bcadc8224de7e8e853aabeab4c2c5d3636d34a12c478b

Analysis

max time kernel
148s
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
12/05/2024, 14:36

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General

Target

2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe
Size

44KB
MD5

7c34e6fe1f75200a5d11a1bdf2136c38
SHA1

06f059a5ef08a79606babde0b764c8ceb23e211f
SHA256

d7d831687db3380ab62bcadc8224de7e8e853aabeab4c2c5d3636d34a12c478b
SHA512

8beb668bcd8e941fd26524e2874e41834ef4a42a8d89c17db55357919d16f11d2efe5d9e05a459a3d854254109f47bfbcdf968dc39774cbda3aa4521d83d1af5
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqs:bc/y2lkF0+Beqs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002297c-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4704	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 1888 wrote to memory of 4704	1888	2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe	85
PID 1888 wrote to memory of 4704	1888	2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe	85
PID 1888 wrote to memory of 4704	1888	2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_7c34e6fe1f75200a5d11a1bdf2136c38_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4704

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
90b680ad08bccb50b7a344e0b7777363

SHA1
9b3d450fdf1d8ad9224883ecf8aa7cd0d90ee19b

SHA256
0201890505bb6486fe216a638cdbaace02f8c5617c13c198d0f2ac2380ba896a

SHA512
38a597c486a2b576485e364f0c743e1caf650cf489598539d66dcebb5f117c964f6c340209a1933e5e4af567d083bbd22be1d8e0038f0de2831e2a9ffbc9b90e

Download Submit
memory/1888-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/1888-8-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/1888-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4704-25-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download