9fdaaae311cdb4efef198fbb0d896939682a08e8b33eaaff31ced8b3b5b55df7

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 20:01

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General

Target

2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe
Size

40KB
MD5

d1ab0c48c334730e3ec2824ece43aaba
SHA1

624d26543941d9c2e8c2465d816a4cb3a8e86779
SHA256

9fdaaae311cdb4efef198fbb0d896939682a08e8b33eaaff31ced8b3b5b55df7
SHA512

98adb7883ac622f9611fada69a1e203a09ce9b4317883e23116c6d97eb64184cef9a8e33f5188a84417b44669a4a94e578781b509d5c88989e3fa408c6dc4f00
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtA5:bCDOw9aMDooc+vA5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2996-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/2996-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3068-26-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	lossy.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 2996 wrote to memory of 3068	2996	2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe	88
PID 2996 wrote to memory of 3068	2996	2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe	88
PID 2996 wrote to memory of 3068	2996	2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_d1ab0c48c334730e3ec2824ece43aaba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

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\lossy.exe

Filesize
40KB

MD5
718bbb33a354c89bb1396b2152806232

SHA1
cb6663a9133f5cfd9d06b4ce8f4feecbd40f6010

SHA256
91b51b5f5419f8977c4ec45e2e57b3c5c9f3e66cf93367730925abe459792d62

SHA512
886e6e24a3b965db469584c75ab363918aef41e889ad47b8a018db49af404931f35453857e4c4324274c8961584bdd9c0ec564ddfa1bba0ce98ecd53ae579113

Download Submit
memory/2996-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2996-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/2996-2-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/2996-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2996-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3068-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3068-21-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3068-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download