06b193aa7cafaf6255686c80e2242dad7525b73fd7f6924a52742eb915ccefac

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 05:27

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General

Target

2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe
Size

64KB
MD5

1392d42f91cc838edf1f4d82fd8191a7
SHA1

17acb89c07ca0c115661fe68101a618c14e50666
SHA256

06b193aa7cafaf6255686c80e2242dad7525b73fd7f6924a52742eb915ccefac
SHA512

5e52c48539d6d35a30a462807fb941bd725d5263cb984f07019a726776599e3c2005921ae1f66241f5b4c60c033b7ae086d970f96f272e41924d56518cc76685
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsihn:BbdDmjr+OtEvwDpjM8I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3104-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3104-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002324a-15.dat	CryptoLocker_rule2
behavioral2/memory/4884-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3104-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4884-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3104-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3104-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002324a-15.dat	UPX
behavioral2/memory/4884-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4884	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 3104 wrote to memory of 4884	3104	2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe	90
PID 3104 wrote to memory of 4884	3104	2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe	90
PID 3104 wrote to memory of 4884	3104	2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_1392d42f91cc838edf1f4d82fd8191a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3104
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4884

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=3896 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:3396

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
88527a2fc4ef022477ba7f6ec768901a

SHA1
bd205faa438c2475cd6fbadb08b92e917f586dd0

SHA256
375ce1e73c2da5ad48e8d73ea43ae968f6566cb3918f4ed7b986277d0016710e

SHA512
ed5116c17241c84422c70ff348ebde06451b0b6d7a6ffd60694d5d84f2f558806b3eda9814915ac7d6b579ce8ac431664edf6125c3d8a214aa35c37122bc6d29

Download Submit
memory/3104-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3104-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3104-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3104-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3104-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4884-20-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4884-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4884-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download