a010d7fb8d84e8e5448ff10d561845d487ae1b0210bfe90de17aa5056a6cb349

Analysis

max time kernel
146s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 13:25

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General

Target

2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe
Size

31KB
MD5

178e818d6224f801f37204386b56825f
SHA1

3c2d80a0fb4c5f8b1b170e2f892e7bfd21054636
SHA256

a010d7fb8d84e8e5448ff10d561845d487ae1b0210bfe90de17aa5056a6cb349
SHA512

67654c9178d2f9947755d79aebf2a65ab8500c9a55ba074603a7124d490ca43eeac1e6305d4a4459e279ee35cb5cd2a29ae993d00307738e8761e6ca480bb131
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9R0a2yqA:b7o/2n1TCraU6GD1a4Xt9R0a7qA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231e7-12.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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3148	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 4940 wrote to memory of 3148	4940	2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe	80
PID 4940 wrote to memory of 3148	4940	2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe	80
PID 4940 wrote to memory of 3148	4940	2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_178e818d6224f801f37204386b56825f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3148

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
31KB

MD5
e52ebf445b592104b91cb462413fbd53

SHA1
4a7c3bdd1e6c71e303fe8e4472ef14a8ef9a5f50

SHA256
a5efb5198c5362712a84e3d4f23da97ccd814a4169aff49e3d06fa68a4058ba1

SHA512
cc3d8c909ac16311722dffa2902bca3f850d0504d9e7e983bd99128170ecd4d86ec8e7823ae4886c2b9a4d6f7c17e2bc3b276984e3f5b66236aaf2db82a6cf90

Download Submit
memory/3148-24-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4940-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4940-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4940-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download