cd9873673ae9117ea34f6ec916e71cad46db9755e620add6dc39ffaa638a7b21

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 00:30

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General

Target

2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe
Size

46KB
MD5

4585990c1c5df39c52142d9072967480
SHA1

898e64fbd7fbf7fa3093d7ff8320edb019a641f3
SHA256

cd9873673ae9117ea34f6ec916e71cad46db9755e620add6dc39ffaa638a7b21
SHA512

855f1b83ed100a5e9748a8f31c5a34e0312fc21246c5bc58cb11176d8a617abc7cdcec19a9fcc8ec9775b561471aca6af7cd8f1725f3d2484be98ecd3ba737d5
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dgl:bgGYcA/53GAA6y37Q6d+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4484	hasfj.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 4040 wrote to memory of 4484	4040	2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe	85
PID 4040 wrote to memory of 4484	4040	2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe	85
PID 4040 wrote to memory of 4484	4040	2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_4585990c1c5df39c52142d9072967480_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4484

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\hasfj.exe

Filesize
46KB

MD5
a73b7fe48cb56a56d2eaabc4dec0bb93

SHA1
d2da4e73c55b5ee3ac7ba2191b7b573a2e9ec1c5

SHA256
4ca8198d641b94feefbe86836d59b8871d9a8ea8be6750a66ca26ca92da963b6

SHA512
d3ca225527c368795e35b6e5870d9655a1a3cb405421b413e6274588f0ee6628bdfe221c36cdc62912d9f6a412b0886968e52955eeb3cd4b21b698f068c5b50e

Download Submit
memory/4040-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4040-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4040-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4484-17-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4484-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download