5457ac5d458cfa88ef11b59fc8ddf42bc9d9cb8e4922f1049af9f4dfd9d4e512

Resubmissions

18/03/2024, 15:40

240318-s357jacg3w 7

18/03/2024, 15:29

240318-swytwace6v 10

Analysis

max time kernel
150s
max time network
164s
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, 15:29

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Report Analysis Logs

General

Target

2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe
Size

34KB
MD5

224083c8faf69728c1b696034c0a737a
SHA1

4a6d82e8790ec2562193a5642755c72c43dafc04
SHA256

5457ac5d458cfa88ef11b59fc8ddf42bc9d9cb8e4922f1049af9f4dfd9d4e512
SHA512

1a6734d1c633ac3e7f5964f5e55b52dd38ee8abb77530a64c6bad35e147e13db44bf6f9eb4f3c2cbd2b14f90655d8a1d05003c70c8b5b0fbe1f4089ae3e1fcc6
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axRL:qUmnpomddpMOtEvwDpjjaYaXL

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_rule2
behavioral2/memory/2016-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4392-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2016-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000022745-13.dat	CryptoLocker_set1
behavioral2/memory/2016-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4392-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2016-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0008000000022745-13.dat	UPX
behavioral2/memory/2016-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4392-25-0x0000000000500000-0x000000000050F000-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4392	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2016-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000022745-13.dat	upx
behavioral2/memory/2016-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4392-25-0x0000000000500000-0x000000000050F000-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 2016 wrote to memory of 4392	2016	2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe	92
PID 2016 wrote to memory of 4392	2016	2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe	92
PID 2016 wrote to memory of 4392	2016	2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_224083c8faf69728c1b696034c0a737a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4392

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
34KB

MD5
f803aa12a174b8ae6d21970e4aa3a06b

SHA1
fb0f69bf77325163d09e5537419f16b01b3494e7

SHA256
55a5afc76c2b5199ddfaef036046d11ede9d7214fffa771eb658abc54867798e

SHA512
859055f5971f8f4828cc2fb3d8e82ec836cbb4b2d85a613e1b7ee3ff3790a08418b88e36e4af19f8a3d74522fc00b73409fc9f05342ce03d691875cf9fcedb7a

Download Submit
memory/2016-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2016-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2016-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2016-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2016-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4392-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download