6822f15e8c31921a4f2e528f8175ad435e76aaf54f9ae323a4079dda7f382c9f

Analysis

max time kernel
146s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 11:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe
Size

58KB
MD5

4db8ffb248043515e89cfe7061f9699f
SHA1

5d167c365caba6bab80c027beda30498050e001b
SHA256

6822f15e8c31921a4f2e528f8175ad435e76aaf54f9ae323a4079dda7f382c9f
SHA512

ae43ce22b513f6ea127d3c526b163bf818d3062ef2ff381416ffd43f089ebdc42b65dd06962266ae36adc468e0938c68428c44d0b709aa694bc9bfd5bce71ee9
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+NL:z6QFElP6n+gKmddpMOtEvwDpj9aYa0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023259-13.dat	CryptoLocker_rule2
behavioral2/memory/4160-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/692-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023259-13.dat	CryptoLocker_set1
behavioral2/memory/4160-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/692-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023259-13.dat	UPX
behavioral2/memory/4160-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/692-26-0x0000000000500000-0x0000000000510000-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	2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
692	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023259-13.dat	upx
behavioral2/memory/4160-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/692-26-0x0000000000500000-0x0000000000510000-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 4160 wrote to memory of 692	4160	2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe	92
PID 4160 wrote to memory of 692	4160	2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe	92
PID 4160 wrote to memory of 692	4160	2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_4db8ffb248043515e89cfe7061f9699f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:692

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=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:404

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
59KB

MD5
585f1c6e97ff15a743b5fd38f95a75c6

SHA1
289dd3cfd3316210bd4112971ba610cef566cae9

SHA256
bf0263ade00a99a9b359256b5f7bcef7c35709ef28dbf17a81b137ee814853ea

SHA512
d701a024cdece57b0b90bb00f1c4d12b9002ad980da6715e07f5cf8cc8c9339a3e3441db2397ff38e0fc5e3e2c87017a0cd28476fb0560fc186923b409ededf5

Download Submit
memory/692-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/692-25-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/692-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4160-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4160-1-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/4160-2-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/4160-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4160-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download