b0fc893626855e40abafd8ba1f7c7e9243ce9818de6bd54dde5f870c8393fe85

Analysis

max time kernel
160s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 10:09

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General

Target

2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe
Size

72KB
MD5

947620aacb9b7757959279fd8f24361d
SHA1

5f138571a74cea3f0bb9a9e3d8918d7ed8465969
SHA256

b0fc893626855e40abafd8ba1f7c7e9243ce9818de6bd54dde5f870c8393fe85
SHA512

7762ffc9a673db2875f77f5dc441fb6f539b0181c042dbe548af3d04ad9a334336053ab4693d787c779fb3ec414cb4936d754001a7cd70f4442ea3cb9230ca9c
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1gP:X6a+SOtEvwDpjBZYvQd2w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023229-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023229-12.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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2880	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 780 wrote to memory of 2880	780	2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe	91
PID 780 wrote to memory of 2880	780	2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe	91
PID 780 wrote to memory of 2880	780	2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_947620aacb9b7757959279fd8f24361d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:780
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2880

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\asih.exe

Filesize
73KB

MD5
62db6611628745209818e910c4e8ec97

SHA1
09fc11c17bc9d37624e4f693483ce8230326685e

SHA256
02d1db4f61d7a67a085522c97862635a8724fad0379109d9ef81aa99f83be341

SHA512
5a33b9247085d20409ab37ab820685cf6e5fb08017d8eed9601629ab26f8858cf8f58335d4d150182b47caa42ddc85000212fea807f7c2eddbd99b2acf22f167

Download Submit
memory/780-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/780-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/780-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2880-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2880-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download