a54e61553bf41d3c2744e24c6afc93c8ba1bff0a8fd5ffdcdcc7530589524fdd

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 12:24

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General

Target

2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe
Size

77KB
MD5

0107c444cc1eef16ffcd4ca508f38cc6
SHA1

921f1ef5aad14a7f75e94a16c6afdbeeb30e0d66
SHA256

a54e61553bf41d3c2744e24c6afc93c8ba1bff0a8fd5ffdcdcc7530589524fdd
SHA512

b007e51f18ac07e90d527b0ae8f0d4f391e4b31b94742c288abf8c2f3b54b1cfe6f35506b7fede23aba7ea3b30e4823e6de197aacb88246c4eef39314661d98e
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yq9g:V6QFElP6n+gMQMOtEvwDpjyaLccVNluu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023332-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023332-12.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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4368	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 2896 wrote to memory of 4368	2896	2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe	96
PID 2896 wrote to memory of 4368	2896	2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe	96
PID 2896 wrote to memory of 4368	2896	2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_0107c444cc1eef16ffcd4ca508f38cc6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4368

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=4232 --field-trial-handle=2000,i,9877262470271371196,11878025205711850266,262144 --variations-seed-version /prefetch:8
1⤵
PID:556

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
78KB

MD5
8c3ae6400be49414180bcabd024a6bbb

SHA1
6fdc6bffbc992c381994cf98cdbde3b529daa736

SHA256
4d3fb0fbb83a3ccf87344e0d4d84be84b2982301a58ed488f14ca61e1bc4ab39

SHA512
c4518dc7cbf7acfb36f52d330712fc09d84d569e3c76b15b10f76ba8aa991184067c1d4c03db06fe0e2ac58d04b8b817f3eeef8b81d9aac9c906b6e8d6239500

Download Submit
memory/2896-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2896-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2896-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4368-18-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download