27a5081cb015c5cb61a886a86d5e452485146ee95ae518d18c36401da8d0eac9

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 06:34

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General

Target

2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe
Size

35KB
MD5

7948eadc7a51ee4efa97dbea2b047b62
SHA1

8dc1695fbb5585030f7f88b24e74e4f9e5d8082e
SHA256

27a5081cb015c5cb61a886a86d5e452485146ee95ae518d18c36401da8d0eac9
SHA512

e99fdc88ee39f853776251c86b69c6743d853e7026e535086133ca86981e9bb02e7823c05535de6b76b1fa606223693e294ed7ed7d62d5b08814b1aef4533d6b
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3q4aKtf:b7o/2n1TCraU6GD1a4Xt9bRU64htf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023110-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4228	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 4704 wrote to memory of 4228	4704	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	88
PID 4704 wrote to memory of 4228	4704	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	88
PID 4704 wrote to memory of 4228	4704	2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_7948eadc7a51ee4efa97dbea2b047b62_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4228

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
35KB

MD5
d87ad48f636da130f32a2376ba7e4e05

SHA1
39645ad7571d0b974329e5af12b19f581df24a46

SHA256
bb65602e162a1b559c0de1e9d74f7a53794ffef20b38517a21363cd003ab4373

SHA512
966af82c3f2b2acd09c30549f851f499623b1e0cadc58fc53883a610697b4f29aee044ef64ff6b520162a45823fc468a32e7df17237a1937ee1d7caf818cab75

Download Submit
memory/4228-19-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download
memory/4704-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4704-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4704-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download