82d584ff573a7ef3ef11c52084b6cc835ab2aa38d0afc0a46eb4ecc3c4b319de

Analysis

max time kernel
165s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 01:58

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General

Target

2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe
Size

115KB
MD5

e60012e6478b2554b312af9a560cd71a
SHA1

759e062470b292f488f1b3e3385c4a12fdca563b
SHA256

82d584ff573a7ef3ef11c52084b6cc835ab2aa38d0afc0a46eb4ecc3c4b319de
SHA512

6b9c434c0c53055c7d8ee4210ee7bc5184ba3faff769364b1784d94bfa809f124fd79f533b40edabbf6bd685e30e23d996e32710a0060ee4630b5ed8bbe65f73
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp0QVOD:z6a+CdOOtEvwDpjczv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023277-14.dat	CryptoLocker_rule2
behavioral2/memory/1936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023277-14.dat	CryptoLocker_set1
behavioral2/memory/1936-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023277-14.dat	UPX
behavioral2/memory/1936-26-0x0000000000500000-0x0000000000510000-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	2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1936	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0007000000023277-14.dat	upx
behavioral2/memory/1936-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 3552 wrote to memory of 1936	3552	2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe	100
PID 3552 wrote to memory of 1936	3552	2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe	100
PID 3552 wrote to memory of 1936	3552	2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_e60012e6478b2554b312af9a560cd71a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1936

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=1732 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:4108

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
115KB

MD5
bb272a797e4bc27e44736ea7554ba22e

SHA1
c0f47a429ed0fa6250aa63b9eb08bc986197ebc7

SHA256
545fba85290204444a8fdf94211ae83b696e638c03ba18d4ab4785ea28f25afa

SHA512
c5eecc630748e09241df0dde4a6eb0e12b9bbe8823637da1d0cc7a1cb395b53b5ee3121abcb2e8b5518f0dfe2c8a143c1b872705d4b578a8dbf38916466127a8

Download Submit
memory/1936-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1936-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1936-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3552-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3552-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3552-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3552-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3552-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download