5cc8ef0e89904996523fbad9dede5b4bd2ba59800353191a3431177126b502f5

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 00:36

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General

Target

2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe
Size

40KB
MD5

72ba5d453bc50ec92121a5f3ac10fdc3
SHA1

ed60cd499f1ce110c8e8936f19da8345aa562752
SHA256

5cc8ef0e89904996523fbad9dede5b4bd2ba59800353191a3431177126b502f5
SHA512

0ae524984f20fe17b5847b554642eafd76ad3c82bfbd9656b973ec328f59804effe5478561e34132b3722dcd07244ec14dfe2c5fa5a5a7a5fda518f528e100b5
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfrG:X6QFElP6n+gJQMOtEvwDpjBsYK6rG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023262-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023262-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3568	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 2260 wrote to memory of 3568	2260	2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe	91
PID 2260 wrote to memory of 3568	2260	2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe	91
PID 2260 wrote to memory of 3568	2260	2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_72ba5d453bc50ec92121a5f3ac10fdc3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3568

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:3284

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
40KB

MD5
fdd0894beeaa297896b41f5855f701f9

SHA1
ad928ab6edf6a797b4472b60477dfdaece971e7a

SHA256
ea5bac9c8efda54250dc6c51e14990c8644319876fdf8e8016fba1d5496832c4

SHA512
0a9c4141ddd3c542a591e5bded600be2e304e28fefc021c1ca7a2c7274116060933d3cb58b42d85f9635bf0f4d294fdd59276977e8b6bcb8cf6722304ead7c76

Download Submit
memory/2260-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2260-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2260-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3568-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3568-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download