1d51da9f89c6bb2597596b833493d5452cc966eafa26053daf34b272a3fc98cd

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 00:24

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General

Target

2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe
Size

75KB
MD5

1d928611c1d4c031b3820d6f5a8423bd
SHA1

3c70ce8e7895b93f46a145293c98a68569f8d184
SHA256

1d51da9f89c6bb2597596b833493d5452cc966eafa26053daf34b272a3fc98cd
SHA512

a72d9c548f5ece8fd0be506317be9f723a267fd80d7ff478a3063fe667fb517ee571a6ed60193cfe13b381fb2bad8a4a9ec73d87af35058cc52b986ad7713ec2
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLNv:X6a+SOtEvwDpjBZYvQd2Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_set1

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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1764	asih.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 4468 wrote to memory of 1764	4468	2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe	84
PID 4468 wrote to memory of 1764	4468	2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe	84
PID 4468 wrote to memory of 1764	4468	2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_1d928611c1d4c031b3820d6f5a8423bd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1764

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
75KB

MD5
42b6d164336e1602135d15b4a1987a11

SHA1
511cb3a4e13806c24801af880fd244f1efaf0387

SHA256
86e6cb61e99247922d0436b08d918007bd4f7ac359f915e6af259c8d9e4cdf13

SHA512
b4a4f2a311899143656a01c80bdcd12b38b7f6f3bad9ccb078beb18419cc3f70abc1d751a170b08eec5d2c1fea73eaf6778e72b9c94b7bbcb41536fb6346c65d

Download Submit
memory/1764-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1764-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4468-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4468-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4468-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download