0459863bc70b9cbf7c43b8f7911f090084c39fab2c5164d50ef6eb0c86148748

Analysis

max time kernel
143s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 04:41

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General

Target

2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe
Size

51KB
MD5

5836a6c8aca967dbddd19954623c56d6
SHA1

0d25f52489fba45a6688782b6284d58544604150
SHA256

0459863bc70b9cbf7c43b8f7911f090084c39fab2c5164d50ef6eb0c86148748
SHA512

0a038e2196dfe5572f5ae52b7d6f11f1de05892781d8c98681310e5173975964d8f2bc79b389c90178e3ebecd6c81fed8080979c74fe7781f942db991ffc76d5
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGf7:79mqyNhQMOtEvwDpjBxe8GGf7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001000000002323e-13.dat	CryptoLocker_rule2
behavioral2/memory/1844-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001000000002323e-13.dat	CryptoLocker_set1
behavioral2/memory/1844-18-0x0000000000500000-0x000000000050F000-memory.dmp	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	2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
456	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 1844 wrote to memory of 456	1844	2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe	91
PID 1844 wrote to memory of 456	1844	2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe	91
PID 1844 wrote to memory of 456	1844	2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_5836a6c8aca967dbddd19954623c56d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:456

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=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:3692

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
51KB

MD5
5b6022ab31923b43bb0a0f2f191e7b98

SHA1
f493b5680d6cd9a6c4ac6eae7271e8e7550c6b25

SHA256
2d3326ed144d0c4bc6c09b448fdf07eb6d60f257ebbefc913085e89c664a4f99

SHA512
ac21b5d0bb4461ce3e3b00158c031a7218e7bcdce49fd74608be771b30e8d7dd448142ca9c2cb1f58a8d2d62500d30a0520c44b2806712294ab617b71976b577

Download Submit
memory/456-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/456-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1844-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1844-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1844-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1844-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1844-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download