3e10ec094f24f5d741182d60158b918d796ce807ac060773631e9c552a81285c

Analysis

max time kernel
149s
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
14/03/2024, 15:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe
Size

49KB
MD5

034622ef529ee38f1f6f7d1c21417689
SHA1

29897c0bff2981f2b3bf437d77f4f28536cc5a07
SHA256

3e10ec094f24f5d741182d60158b918d796ce807ac060773631e9c552a81285c
SHA512

7afa2173fcd56370641d47a1991938bc55eb898828155446bd96d8e9fef10d25ec1a6048dc34e297bf32264d485b89ad8ed426e9fe87e3b37477478994cc5820
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTB52zl:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6uj1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1196-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1196-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000400000001e980-13.dat	UPX
behavioral2/memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1196-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1196-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1196	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 3952 wrote to memory of 1196	3952	2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe	89
PID 3952 wrote to memory of 1196	3952	2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe	89
PID 3952 wrote to memory of 1196	3952	2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_034622ef529ee38f1f6f7d1c21417689_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1196

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
49KB

MD5
6e1c8259a385697b7ce8fbd4d16716d4

SHA1
8911dc0d8f5f1badde928608dfcda8c3fb73b4cc

SHA256
02604d9e83db13d51afb1d9138c73048378df4a9f383803ed4675cb2a4b611a0

SHA512
2df428f9a1cfbfe55f40fcbda4c4be916e465da75cb4d6eee7f82c9caee01d36a9fc203d57ae18c0052e5b9d0563e8bdf1a4a896a834198338fcab9994219263

Download Submit
memory/1196-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1196-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1196-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3952-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3952-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3952-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download