2ec9e8fa7709afb11a3e15152ee01049dea1854001469a9e7f05078eac00e83d

Analysis

max time kernel
139s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 02:29

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General

Target

2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe
Size

64KB
MD5

2596685510f291e5fd4bd689f9040987
SHA1

1c77f560d5d2b8c7970e01c7d136b09dbc6c2a2b
SHA256

2ec9e8fa7709afb11a3e15152ee01049dea1854001469a9e7f05078eac00e83d
SHA512

d5449860f95bc49d6a7f267e3e2be2403edbfd52ef2d5a1da6486a1f4b77a34eaea04e1d99819dad43c106fa661e2d98a836d3d9b2a5e486d0607375ece14725
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzo7:X6a+SOtEvwDpjBrOu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002324b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002324b-12.dat	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	2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3876	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 332 wrote to memory of 3876	332	2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe	92
PID 332 wrote to memory of 3876	332	2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe	92
PID 332 wrote to memory of 3876	332	2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_2596685510f291e5fd4bd689f9040987_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:332
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3876

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=4144 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:1472

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
64KB

MD5
17a4031ab0f0efedf84fafcbde6d7460

SHA1
ee3ba0915ce08358332d1e8646d13ac95b3ec2c6

SHA256
87d899bf50527003824f1323fff63a372b1a1e264f53dd6dcb4a0003110a6ca2

SHA512
83b1c251282fe39168a75b60b351eaf44f2577ccc04eaf30f4ec399a8199ead24e5b84050f03c1969cc35b8ca2bbd2d30afb6b0fbd1a052526425424de7fd10c

Download Submit
memory/332-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/332-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/332-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3876-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3876-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download