af67ba1f07486b97d3b8ba3ee488357d404dc7dcbca9e55cb71b137030e872d4

Analysis

max time kernel
147s
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
26-03-2024 14:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe
Size

40KB
MD5

0341d646b560cf5eca11043f243aec91
SHA1

d66cabec5912fcbafe52fd7bc60256f50af96fff
SHA256

af67ba1f07486b97d3b8ba3ee488357d404dc7dcbca9e55cb71b137030e872d4
SHA512

2237499818a4cf893ff4c021714679b80f0278fe46ec05700531c337d3811ca32b26c54fa722a89b8ac68ed2888a2c25dc2a8d9417550788b236fa1e6755ddc5
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axRV8X:V6QFElP6n+gMQMOtEvwDpjyaYa6X

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2132	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 4988 wrote to memory of 2132	4988	2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe	93
PID 4988 wrote to memory of 2132	4988	2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe	93
PID 4988 wrote to memory of 2132	4988	2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_0341d646b560cf5eca11043f243aec91_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2132

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

Loading Replay Monitor...

Downloads

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

Filesize
40KB

MD5
33f50ef4ca37a160095ef929e3dd13a2

SHA1
c5ed301673e7a15327920bf4d0a5cd1dee0f5913

SHA256
e5e0f9bc858851fed77e31a4d6eccb89494eba533aaf31354bb024176295e849

SHA512
6708f8566e930951b9d4fdb0b167b70594626a65c8f5c43084ffac17a8b546d36f19f552c0121a30c0de5802b489e982a0cbbacd78559285bfde745a77c9e371

Download Submit
memory/2132-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4988-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4988-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4988-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download