9e2e257b621c913a726483048a03ed9115444a4424f76414f6fe3d59dcc5a5bc

Analysis

max time kernel
141s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 17:13

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General

Target

2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe
Size

38KB
MD5

c2f2b8fd5f837f5160cb1b92dd0d877d
SHA1

d62f8181c98e4b1201ff67df6d08f9ae9440f11f
SHA256

9e2e257b621c913a726483048a03ed9115444a4424f76414f6fe3d59dcc5a5bc
SHA512

350ec11f2655826b64dce8b4e192b041354ea360330fd446c3e7a76b989512e151c16ae6ee51b15291ac8688cf3651c81200ddf952594aff80006f0c80dc21be
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5ax6yG:V6QFElP6n+gMQMOtEvwDpjyaYaPG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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	2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3748	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 4120 wrote to memory of 3748	4120	2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe	95
PID 4120 wrote to memory of 3748	4120	2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe	95
PID 4120 wrote to memory of 3748	4120	2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_c2f2b8fd5f837f5160cb1b92dd0d877d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3748

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=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2440

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
38KB

MD5
b1b87428338b54f714c7a306affb26df

SHA1
304f7af356b8bd5c96dc2e69056b2f46e7dc49e8

SHA256
8b5013a26dd7cacb4c4709fdef4cceba59082da82edb76d86e4d8ef640552c05

SHA512
58169d2eb0930bf42e84253978662da0ceec488cbf4ccc17c84f9d05ead97def9528666dd0fcc09e480c65a7b31b8a408150769154b4eb2ed57976b0e538d770

Download Submit
memory/3748-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3748-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4120-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4120-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4120-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download