084b2993cd907fc25e8b8ff0debb52d5c748899cb289c6927961306086a3297f

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 14:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe
Size

71KB
MD5

2212af8ca31259762dc4185cfaeec2ce
SHA1

1a8f6cac58efcd8d8d3822a11cf3e2f28db09ff7
SHA256

084b2993cd907fc25e8b8ff0debb52d5c748899cb289c6927961306086a3297f
SHA512

ee8595a4b15ec9150f0b37cfed39d9d8f92976f1463b9fff34708e68e0cdf7dc0ca49a142bb38001ba61d22716008df1b7c62ec54be61d68652a6ccc0202fc31
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOV:DW60sllyWOtEvwDpjwF85m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4816-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4816-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4680-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4816-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4816-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4680-18-0x0000000000500000-0x000000000050B000-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

Processes:

2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4680 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4680	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe

description	pid	process	target process
PID 4816 wrote to memory of 4680	4816	2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe	asih.exe
PID 4816 wrote to memory of 4680	4816	2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe	asih.exe
PID 4816 wrote to memory of 4680	4816	2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_2212af8ca31259762dc4185cfaeec2ce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4680

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
71KB

MD5
4a1db170228f42827fd65c39c9ed8c84

SHA1
192a0673d66bd47409a71671f962751bce3006eb

SHA256
cd21d956c6a18c46a823a0b5c46e35dd818c80edccdd06aba0d0513625d7ca53

SHA512
54063867618eef478af92bd037944ceb9d1c8646b885c40304162fbeed76848779085780a21431c18d127e1fdcdbca94ebf9f60a7202e48d6c3ed021ba0a0375

Download Submit
memory/4680-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4680-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4680-26-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4816-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4816-1-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4816-2-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4816-9-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4816-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download