dbc1484c7f2edb0e09dca1c54f0800e2c6aff0c66d176c95f5677a2bb2531f9d

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 07:40

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General

Target

2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe
Size

97KB
MD5

ff8423649e5a9a243123efab8e22c303
SHA1

6c88d101ddd8633c29350a592b62c98e4c5f3449
SHA256

dbc1484c7f2edb0e09dca1c54f0800e2c6aff0c66d176c95f5677a2bb2531f9d
SHA512

9c0d330343e05b1bf3d836497cd25542636d0650a1bbca95322118c1a9739dac22507a30d3566837f4fe3c2edc9a10ef9850d0f9a89c352bc686147d43fc48f6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0M:V6a+pOtEvwDpjtzk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002351a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002351a-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4904	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 2028 wrote to memory of 4904	2028	2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe	90
PID 2028 wrote to memory of 4904	2028	2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe	90
PID 2028 wrote to memory of 4904	2028	2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4904

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 --field-trial-handle=4000,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8
1⤵
PID:3988

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
97KB

MD5
df87e2c1dcaa17c01fc2e27ca4471ff8

SHA1
4ff714643722a7442d30a9108f4f05d997819649

SHA256
6b0139657e65737c9c4784aa1906271a46228228e501814713a33ea58eddbb26

SHA512
27c6c5d9bbd8d28184a2266498bd9ee41e2630380ee36079c11dbe26762ae1cc830eef73e9d677c13cf7b4a851911a65dffb8174f21b108bb3e6398c69558d84

Download Submit
memory/2028-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2028-1-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2028-8-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4904-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4904-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download