3ff8b640a0c543d40a24157fe7a2b2af698866a625a4b7d21495614e85d1b420

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 00:25

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General

Target

2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe
Size

46KB
MD5

31ebb34623488344999ffc0d94374f54
SHA1

ff806145a7b06339f394afc9b0ab414b23cbb831
SHA256

3ff8b640a0c543d40a24157fe7a2b2af698866a625a4b7d21495614e85d1b420
SHA512

95982ffd30ce10b04453afc787be3938c8ba54c1733e0a5b3f68f2a1c23e7e092419c41626a1733e948806267ebec912552dfe061e766dc7473f196dab5f714e
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6ddZ:bgGYcA/53GAA6y37Q6ddZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231ef-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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3168	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 2920 wrote to memory of 3168	2920	2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe	84
PID 2920 wrote to memory of 3168	2920	2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe	84
PID 2920 wrote to memory of 3168	2920	2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_31ebb34623488344999ffc0d94374f54_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3168

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
97e52270a680ce7c3668fbf005b32277

SHA1
8763d417c9f7ddeee0dd46350de563608a568695

SHA256
c217a1fd6a1c6274ba9f468bb652229bed6cf419af2d01761e668eaa4ea309c0

SHA512
fafde102a380936dc15fef355c5692bbe352171322cc8d910925701fd10371226d8569de7867d351f77c0e5f1977257639e6029f537a9e078053369d85ee18c6

Download Submit
memory/2920-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2920-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2920-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3168-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/3168-21-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download