b9a15aae4a836f46e11e3df0821d3e1cd81e0b03e6d04de3783ea12c13adb6ad

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 00:40

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General

Target

2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe
Size

48KB
MD5

64b9a9bd4a928f2aa315d60125942269
SHA1

94dc1eb53b3cd7b2a0900f0017cbecf38718e395
SHA256

b9a15aae4a836f46e11e3df0821d3e1cd81e0b03e6d04de3783ea12c13adb6ad
SHA512

481be48b3735d3d1abaf9a0d4f924b902c74a7fa5e74d4ff7ef245b22bdcc534fe24a4265f3d27feac1d949787a955eb1cd436b704a27963de232fc982870c20
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hvvkH:bgGYcA/53GAA6y37nby

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001db72-12.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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	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 3672 wrote to memory of 2696	3672	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	94
PID 3672 wrote to memory of 2696	3672	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	94
PID 3672 wrote to memory of 2696	3672	2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_64b9a9bd4a928f2aa315d60125942269_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2696

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=4184 --field-trial-handle=2228,i,17475224967547320003,13667387715861799238,262144 --variations-seed-version /prefetch:8
1⤵
PID:4832

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
48KB

MD5
8cda154173fa41a2cdefa9a689b46e8a

SHA1
230acd14984411fcfe0b0770e0b4c565cd64916a

SHA256
03b9f4fe059ec5f99088b192d9ea89f42105a2ce783f39685dab022265b1bcfa

SHA512
7cb5de59fa283c126a1de3b7fcad509b472405237d95526cfd61ae927bc12f56f3d76fac00cdef5e5509847b4ba1d69012266d9693b7d82b58e1f04bfe0b16b4

Download Submit
memory/2696-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2696-22-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/3672-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3672-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3672-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download