d6461ac9de7a6c9661615eb09a72202d666f2aacedcfd925e2f71d53eac88e11

Analysis

max time kernel
151s
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
30/04/2024, 19:40

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General

Target

2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe
Size

42KB
MD5

fc29dfe3743df1179375bbb17b9104ab
SHA1

2aafb6e96c3bca211dad07ad628a13032f1bb772
SHA256

d6461ac9de7a6c9661615eb09a72202d666f2aacedcfd925e2f71d53eac88e11
SHA512

4c59277fa1cd7e304a1b3179b3bda31c1cc26243d6b9a96e8111e33ced36fda4c5c07a67b95c5ae792f7b38b1f11ae9f0c97442775b64a278a9db532f068a6b3
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZLvO:b/pYayGig5HjS3jLm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002326a-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	2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2412	retln.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 636 wrote to memory of 2412	636	2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe	91
PID 636 wrote to memory of 2412	636	2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe	91
PID 636 wrote to memory of 2412	636	2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_fc29dfe3743df1179375bbb17b9104ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2412

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=4328 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:3488

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\retln.exe

Filesize
42KB

MD5
6b220cb3965aeb11b2d7fa089cdb823e

SHA1
456b872a832383734d369970b65ae6834bf5a349

SHA256
1a56b4f17c6a7ca6fb1b83888df9a64d7fc459dfb9596e33dbe72414a75b57b8

SHA512
a7f1610f5c6e3d5e6897bdec5b54f0d9afc9c0f5b88e715e1d46a2c17061dcd4df5a90b9e99d91d3ef451441fb5e3264b3846b9b25f250d1f5a266d632bcd3aa

Download Submit
memory/636-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/636-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/636-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2412-25-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download