7dabf13703c1600ce6a74ba58d597ab7bd672494a24fde1d6fdf077819da244a

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 10:02

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General

Target

2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe
Size

386KB
MD5

fd2f9b589fc6c9c03d9815069b9c143f
SHA1

d91ee0f0afcd80b064f1871a7eea723393e66c0f
SHA256

7dabf13703c1600ce6a74ba58d597ab7bd672494a24fde1d6fdf077819da244a
SHA512

d47dd5eba31b080d8cd4e3a1764f5789763583323263c4d0e13d64a5f53f580637d6eb6c5d924332facc698e768dadd107887e2faaba07c01cd1dae8bcb0a9d5
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXt:nnOflT/ZFIjBz3xjTxynGUOUhXt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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	2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
900	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 4772 wrote to memory of 900	4772	2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe	100
PID 4772 wrote to memory of 900	4772	2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe	100
PID 4772 wrote to memory of 900	4772	2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_fd2f9b589fc6c9c03d9815069b9c143f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:900

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=3144 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:3664

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
42c4ec47bde76bddb93ae08b1fd4cfe5

SHA1
78767903108908c86c5955766b49c026cdb9c8d0

SHA256
23282ca42b4439f57c5490c6243dcde369eb2d376041bed6d2ccebddc34434cb

SHA512
4c5ce809c9af2883aa65d74ff0a9e5d745e6804798e7f954c1414019798de822cb106ff1724d931ac24cbbb396c2f1cecd2f7c6020bfa9b05b35ff0cd9f88a88

Download Submit
memory/900-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/900-19-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4772-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4772-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4772-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download