f24abadfee98370f14f30266999b90ec7cecf26a524eaf7b5fc066896f5a6fb0

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 01:32

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General

Target

2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe
Size

41KB
MD5

cfa6f4d8b1a315cfd3dcc6b92aa57cf5
SHA1

4e11b88266bbb7b9eee8d4fd6acdb4d7e819d679
SHA256

f24abadfee98370f14f30266999b90ec7cecf26a524eaf7b5fc066896f5a6fb0
SHA512

e13a81e3af8896704bbf6ea7188f8879ead6b256f2f0fc24a83619cc6b417c9fb7f0c102837baf7bc7142a45112a3db6718a6402ff338c2130d10bf93d241f02
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwovv:bc/y2lm6Y0AqJ51mwovv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fd-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	2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2092	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 1588 wrote to memory of 2092	1588	2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe	88
PID 1588 wrote to memory of 2092	1588	2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe	88
PID 1588 wrote to memory of 2092	1588	2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_cfa6f4d8b1a315cfd3dcc6b92aa57cf5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2092

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
41KB

MD5
c8f396dd918b83e6815f4f37067d0532

SHA1
a3cc2168168ed61d0c0bea7f65aeb3e2a73cb9f7

SHA256
4c3396bcb1734413e6ca1fa072c276725779adfaa464c31c39c30dedab016123

SHA512
1ea542c950c82627cf7539d3e8500fd56e8d599a0bc1e4592d17d3df2ef4e8f8904e7942135c21b7be81d35050d64e4235c0c28127c4ec83070d211074dc97d3

Download Submit
memory/1588-0-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1588-1-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1588-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2092-21-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download