d2a61ab9ff8e799f10ac3ed8fcea826081137a7f166057fd425771f769a2e700

Analysis

max time kernel
160s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 20:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe
Size

42KB
MD5

618f20b90d2bb3d6309b686e4cc2e7e0
SHA1

cc35f1649ae6520bdccc216d7b7c97762fd51057
SHA256

d2a61ab9ff8e799f10ac3ed8fcea826081137a7f166057fd425771f769a2e700
SHA512

2fcf474cc66479d901a19f841d7b8042aae03f36c6ec5df30e7c6225f0c4b105f095802b07cfeb9fe958ec5d83942f2076ac709ea8fae8f0e93429c5cd814ef3
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedX:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/760-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f3-13.dat	CryptoLocker_rule2
behavioral2/memory/2356-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/760-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/760-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f3-13.dat	CryptoLocker_set1
behavioral2/memory/2356-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/760-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	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 760 wrote to memory of 2356	760	2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe	88
PID 760 wrote to memory of 2356	760	2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe	88
PID 760 wrote to memory of 2356	760	2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_618f20b90d2bb3d6309b686e4cc2e7e0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2356

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
42KB

MD5
54bfadceca55c6c9512056fb2e3cb978

SHA1
1b11d75147e7dc2b89a4c773f5f24ae8df3b9d23

SHA256
88ef63331130b39bbba56a0262715c7a306e6c9e43c8128ab0daad57babcfb04

SHA512
f176f6524b1ba2c5ecafc94b2a3ab72759b243840b8835ad614569f7e5730b0e936de62dc1a51c6dfdf4c63cd300b7e20f9d6470c5bf8c2d52b0f22f3cb8fa1a

Download Submit
memory/760-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/760-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/760-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/760-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/760-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2356-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2356-20-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2356-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download