e6da00b30b32ac66af2ef642ddf6044bcde0a6e9dc391c890f1dc2fbc3a10cc2

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 20:35

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe
Size

58KB
MD5

3fdad827f501f9a884e3cf3356de77f2
SHA1

6d7a7a3ff0b7c569f0cfd78723f5f80e92fe4c50
SHA256

e6da00b30b32ac66af2ef642ddf6044bcde0a6e9dc391c890f1dc2fbc3a10cc2
SHA512

10c8238f24a62a7ed4f387ad87201a73906a36c01050639815ef284513e64dd4b33d95b7a64b9916fea450f3eab212252516fbd7213e48caefdc12e200f80df6
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYa59IEZ:z6a+CdOOtEvwDpjQh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4908-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000233d0-13.dat	CryptoLocker_rule2
behavioral2/memory/4908-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4844-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4908-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000233d0-13.dat	CryptoLocker_set1
behavioral2/memory/4908-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4844-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4908-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00080000000233d0-13.dat	UPX
behavioral2/memory/4908-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4844-26-0x0000000000500000-0x0000000000510000-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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4844	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4908-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000233d0-13.dat	upx
behavioral2/memory/4908-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4844-26-0x0000000000500000-0x0000000000510000-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 4908 wrote to memory of 4844	4908	2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe	89
PID 4908 wrote to memory of 4844	4908	2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe	89
PID 4908 wrote to memory of 4844	4908	2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_3fdad827f501f9a884e3cf3356de77f2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4844

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
58KB

MD5
f6feeb382d474578c0a6ef1d0007c4d0

SHA1
0ff3f24f213b51584e4c626812c60880c4a390ed

SHA256
56e3811bb68c36a2d023a33a3bdf66a34a7e1dbc46f4087d155a1a7adefcb409

SHA512
02a73684eea626fd768a305894f1d8511293f750f8733c49524d35f0e85e44b6c5c2babf394598daffd19bcff36aa1cdfa146fab9fe7549a53cf0c1e69612ddb

Download Submit
memory/4844-20-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4844-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4844-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4908-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4908-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4908-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4908-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4908-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download