5c7697c9911d8226952ac32f18354f68ed240e34db79267700ef4d8e4749c373

Analysis

max time kernel
148s
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
18/03/2024, 14:01

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General

Target

2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe
Size

47KB
MD5

ff5e00f19ce45c8a5ff62d8dca646e48
SHA1

ece8eba345a34e94367fb51b7319b8b8e011423e
SHA256

5c7697c9911d8226952ac32f18354f68ed240e34db79267700ef4d8e4749c373
SHA512

7060e4b277b056fadb9420c0dc6bda5fe782f821dff75eaf3989d9cc37e17c938de1dd41903ee72a5d3229813ee73a9bb5526faa52ae8718f894bb01fd762fef
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnUtR:79mqyNhQMOtEvwDpjBxe8xtR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/3532-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3904-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/3532-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3904-17-0x0000000000500000-0x000000000050F000-memory.dmp	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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3904	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 3532 wrote to memory of 3904	3532	2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe	89
PID 3532 wrote to memory of 3904	3532	2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe	89
PID 3532 wrote to memory of 3904	3532	2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_ff5e00f19ce45c8a5ff62d8dca646e48_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3904

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
48KB

MD5
eb090fdee147b40f518df259a9ec2562

SHA1
85bfeeb6298a4b37eb850a315770119215288afb

SHA256
2b1975ee4f663537d4472f606f99f9972b09ea8c63a6469c1c4f3b9a3f4b3c6d

SHA512
d42adb4ca4c07dc78fb511e20e2dd2d28462a4362db4b16a003008c301b353b31dfcfea51638c73adb36f6f85f7d22c64412bdd3f1c8aae34ee9ef4a1f740563

Download Submit
memory/3532-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3532-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3532-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3532-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3532-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3904-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3904-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3904-22-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download