b0d7cbcfd95d2aef7f6dede68065b2b5fa993f316949e9d793a399cdeb004150

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 04:43

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General

Target

2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe
Size

68KB
MD5

80f3874c2ca85919c7ca47f1e476cd07
SHA1

e91bd0cf75a8b3a79de520f0de9513e45bddc109
SHA256

b0d7cbcfd95d2aef7f6dede68065b2b5fa993f316949e9d793a399cdeb004150
SHA512

007725f852a9886e1aaa6d794763795859499fc0bc924e94d0a9d4c9ead1a139b08f82995aa88cd69b51bff1b0041b536b240d6cd6d33644f27f6628d44924d9
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQATr:78SEOtEvwDpjWYvQd2Pn

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/3740-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3740-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_set1
behavioral2/memory/3740-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3740-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0008000000022f51-13.dat	UPX
behavioral2/memory/3740-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3740-27-0x0000000000500000-0x000000000050F000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3740	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000022f51-13.dat	upx
behavioral2/memory/3740-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3740-27-0x0000000000500000-0x000000000050F000-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 1976 wrote to memory of 3740	1976	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	82
PID 1976 wrote to memory of 3740	1976	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	82
PID 1976 wrote to memory of 3740	1976	2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_80f3874c2ca85919c7ca47f1e476cd07_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3740

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

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Downloads

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

Filesize
68KB

MD5
c75710ca0d653fa55caeff02754f64d0

SHA1
0dc5b5a4409d52112182ecc0fe0f951e17777c23

SHA256
dea96b42b5b65221e310e5a8103ed5557479802f45098030118b9624a978dee7

SHA512
e77d63c48ab312048098fe026c1f3aa464146845f2f8b4cc6bf6d1f92be5c685a9392da88cbd0883a624b751d22992070b1dacf9b64bc7ad162a34b6cdc9afb0

Download Submit
memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1976-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3740-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3740-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3740-26-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3740-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download