249e5cd063dc6eafa2ee2f88303c315adabb5bd371b4b498abaf417d48ba396d

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 10:37

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General

Target

2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe
Size

34KB
MD5

650a0ab4fda4e84cf13826e09620dc78
SHA1

6b280eb46bb367aac7f9859ee82c702d255fc632
SHA256

249e5cd063dc6eafa2ee2f88303c315adabb5bd371b4b498abaf417d48ba396d
SHA512

bee1d537c61046f8e52d40a590d4c845789e4addb1e1f14963083ba111b33ef87cab1132c96cdc5d8c2688139c5692db1aef5e7e4947c1651fd360056909b42c
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3q4a+33LilG:b7o/2n1TCraU6GD1a4Xt9bRU64tbilG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00050000000224ff-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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	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 3424 wrote to memory of 4620	3424	2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe	87
PID 3424 wrote to memory of 4620	3424	2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe	87
PID 3424 wrote to memory of 4620	3424	2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_650a0ab4fda4e84cf13826e09620dc78_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4620

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
34KB

MD5
f111bd862d059c81bdb201497e164b7b

SHA1
1374f92d7b1b9f98a62ba6e3800ced5bba4f5522

SHA256
4098edaba5967d8451f62694313b13fe40c35d0cd9ea6522149adb838964aa5b

SHA512
74b6cf3f884ba4c5971700d302af144bca40fb5793bb8f64f25e6c4c0411301f962e97005293de6f5f5540d8e4f72fc41d17e764606c9546f705ece32ffac926

Download Submit
memory/3424-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3424-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3424-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4620-19-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download