09e757896a8efacab39e9aec88194a68851358c2a4b3b002571a16378c13e1ee

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 17:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe
Size

57KB
MD5

6be4ec94de494195fea56fde00b3aa46
SHA1

d0eb9cb5e019bcdf4bbdfabbf1ed6b0ac030ab19
SHA256

09e757896a8efacab39e9aec88194a68851358c2a4b3b002571a16378c13e1ee
SHA512

bc19c993a8041c57ff698bcd3a61a5a6f614dfb43a9851488b912083ba95365322839336e820d15e88654d075898939848c75a9c82dd766f3fa51d42e5e984d8
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axcE9GV:z6QFElP6n+gKmddpMOtEvwDpj9aYa59g

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3560-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320c-13.dat	CryptoLocker_rule2
behavioral2/memory/3560-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4388-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3560-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320c-13.dat	CryptoLocker_set1
behavioral2/memory/3560-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4388-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3560-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002320c-13.dat	UPX
behavioral2/memory/3560-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4388-26-0x0000000000500000-0x0000000000510000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4388	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3560-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000700000002320c-13.dat	upx
behavioral2/memory/3560-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4388-26-0x0000000000500000-0x0000000000510000-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 3560 wrote to memory of 4388	3560	2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe	88
PID 3560 wrote to memory of 4388	3560	2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe	88
PID 3560 wrote to memory of 4388	3560	2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_6be4ec94de494195fea56fde00b3aa46_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4388

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
57KB

MD5
bb99d82fd67a7d772b4d3c07f677e13a

SHA1
ce87c1a9adaea55ba7a08c0f43a04125aae68321

SHA256
02fbf79c9a3218849e318f4acd098577ac3e5ef7964a4240b227f71e9798dcc1

SHA512
930f036c1bda6ffc33ea4b00df8f8113096f2f66db9a6546501982fd65b1affa55d9d832bd4ea780be671e7fe7fdf3e36eb457fc5edcad5178cff3464a1db1f8

Download Submit
memory/3560-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3560-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3560-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3560-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3560-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4388-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4388-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4388-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download