d70a94af65ba9294ef6cb7c8c889a2c2c5bcbede6d75bfc60dee444936bfacf5

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 04:26

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General

Target

2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe
Size

47KB
MD5

4b82f8832d234167f84ed10052cae978
SHA1

d469753fd4ca243781b1b71dddce46f3d17ba5c1
SHA256

d70a94af65ba9294ef6cb7c8c889a2c2c5bcbede6d75bfc60dee444936bfacf5
SHA512

7a93f3c274df4e9e7bb5542a2930ae6394f612290a47909db830468f0212b45a5a3bc4c7f3f1eed14ab935ff968ae43b3bf0dc9926effd85b476a46f95208544
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vy:79inqyNR/QtOOtEvwDpjBKccJVODvy3/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3100-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b0000000233c3-13.dat	CryptoLocker_rule2
behavioral2/memory/3100-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3100-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b0000000233c3-13.dat	CryptoLocker_set1
behavioral2/memory/3100-16-0x0000000000500000-0x000000000050F000-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	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 3100 wrote to memory of 2596	3100	2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe	83
PID 3100 wrote to memory of 2596	3100	2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe	83
PID 3100 wrote to memory of 2596	3100	2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_4b82f8832d234167f84ed10052cae978_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2596

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
48KB

MD5
9df06e10e65d2f53e5c7f981017d2246

SHA1
098ebb6d2f1c70e42ddd88bfe6b5654a1cba4769

SHA256
948ccc4d45e3b96355ad8d67475a6a039e0654e9dd11a2482c99cf1b94dda43d

SHA512
a7008d9b2ec2577c14a076f55008a153171b31c590e898b89734c83d173c713ce75aaf74ae053eb31b3c23ff2299deb53c7ee167a1897e56483d0bc028023ce1

Download Submit
memory/2596-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2596-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3100-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3100-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3100-2-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/3100-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3100-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download