211cf57348f1ae9042783290767a8e868f61d6aaa1c563e25d751559a2eaa7fc

Analysis

max time kernel
146s
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
26/03/2024, 07:45

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General

Target

2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe
Size

37KB
MD5

28b0b4f834f539efd3bd3a5f6a088be7
SHA1

2e9a75203777ac77b13df69eb6306082f9c6c43a
SHA256

211cf57348f1ae9042783290767a8e868f61d6aaa1c563e25d751559a2eaa7fc
SHA512

72b1739a44334698717824e53e076b174b1b179329f51eda40b48054ce63cb2794ea130cb2fad02f679f545b10b6d737b482bb9c886581237612f3f3a7e27574
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCpgv:X6QFElP6n+gJQMOtEvwDpjBmzDUpgv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002332c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002332c-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1500	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 4568 wrote to memory of 1500	4568	2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe	96
PID 4568 wrote to memory of 1500	4568	2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe	96
PID 4568 wrote to memory of 1500	4568	2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_28b0b4f834f539efd3bd3a5f6a088be7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1500

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=4396 --field-trial-handle=2272,i,1589057049575649654,2929151440327217574,262144 --variations-seed-version /prefetch:8
1⤵
PID:4548

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
37KB

MD5
03fa9feaad4944d9fa812b3434b73d0b

SHA1
4d5dbdb8951b90387b7af738d809ab8fb7e658d3

SHA256
5d7e6856deddc6367cce7509c8ae1e31b2411d9ce5f0d68633d4b9027996bccc

SHA512
607ccb66301e9969c62df9fcf1da9af9d8c581d9a77c6190a5822da164a26ed5618c975c23a25221cd5424507c7024715dad219f20e832db78d360c7d29afc43

Download Submit
memory/1500-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1500-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4568-0-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4568-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4568-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download