46c0f1c0590d715a3b6a446b74da986dc02ecbb31c4623d5b44592adde02ec3f

Analysis

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

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 05:28

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe
Size

124KB
MD5

1fad888cf35f935db8df2dfa5faf4c8c
SHA1

1eec9acf690d9f74a1ab74ccd7c9d98ef11cd819
SHA256

46c0f1c0590d715a3b6a446b74da986dc02ecbb31c4623d5b44592adde02ec3f
SHA512

d1558e0f7bdde285775bc6dc47b5882cb1912d79de1731b2cd77a9fbdec573dd781b596c7e75d28dd664dc26f24463304fd291ab82e7235f6bc184308827e882
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMgd9:u6a++OtEvwDpj6zb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0011000000023125-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0011000000023125-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
372	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 4856 wrote to memory of 372	4856	2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe	89
PID 4856 wrote to memory of 372	4856	2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe	89
PID 4856 wrote to memory of 372	4856	2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_1fad888cf35f935db8df2dfa5faf4c8c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:372

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
124KB

MD5
f031f5f0a0ad68943d6e8c4e97fa14df

SHA1
7564f0464a57e895af5e15cb020e998a9e812a5d

SHA256
35188efb9897e7610471bceb9821d463b5820d00dcaac684839ef940162ca550

SHA512
98fe68847bb8ee0d7e12ab830f19f0ef6bb7afe8bd7f041ebca1dd534b92199c519b00c4cbc40299de5b88a104212bd70b23f2ec5bc85cc8b698632d64ec6a28

Download Submit
memory/372-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/372-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4856-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4856-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4856-2-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download