531c1cb1abbf5d120c2da50c48284f0eb60bf3df17ecc85485515ac0f1c1e82f

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 10:01

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General

Target

2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe
Size

386KB
MD5

dec00d23dc60d82aa915bd8008b2db3b
SHA1

275d6445207fc663699df43d38c54eba1c40acb7
SHA256

531c1cb1abbf5d120c2da50c48284f0eb60bf3df17ecc85485515ac0f1c1e82f
SHA512

862edc1c81d400ff2fa97b2c526c7e4fb9d4df470ceaab98938260f66cbb2e5231ddc8b7d7cf3f12fcae9dca1237136e6521a59e4207fab608c0f71b672c47d6
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXr:nnOflT/ZFIjBz3xjTxynGUOUhXr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0002000000022ea1-12.dat	CryptoLocker_rule2

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	2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2804	hasfj.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 3808 wrote to memory of 2804	3808	2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe	97
PID 3808 wrote to memory of 2804	3808	2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe	97
PID 3808 wrote to memory of 2804	3808	2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_dec00d23dc60d82aa915bd8008b2db3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3808
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2804

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=3496 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:1868

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\hasfj.exe

Filesize
386KB

MD5
00dd51456a8625245327349c41709e41

SHA1
df748d780b721606844e1cd7fccd9a8938b86f80

SHA256
cabe9f594431c74f6478a5695571f648aa266fc5abb7447782b709f25a6f36e4

SHA512
c3c514545ea9e0a7060aec7053ee3e37bfca74a36daaa968d127bc845ef7a26335aee3d2d7a33206938841f0903b1a211c64065ac97a797830c3aba52279364a

Download Submit
memory/2804-17-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2804-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3808-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3808-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3808-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download