1b5df1845acce3e0d0fb5bd30def2bda35aebcdbff9e49c64059ab5ae7f372fa

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2024, 10:02

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General

Target

2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe
Size

54KB
MD5

f183266513a429c4e265d1d453b34f01
SHA1

207785ad0d6444822da33e98157858788d891065
SHA256

1b5df1845acce3e0d0fb5bd30def2bda35aebcdbff9e49c64059ab5ae7f372fa
SHA512

26cce68533391ed9f74fef4fd9e12424d7f2a1287ad6847d1bcca7c5da908c83a235b621db0fc2ee94c489b75ce4812fc198f6fd7797d404686a8af0adfaa133
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMduYZ:79mqyNhQMOtEvwDpjBPY7xv3g8ZdtZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2860-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023148-13.dat	CryptoLocker_rule2
behavioral2/memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2860-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023148-13.dat	CryptoLocker_set1
behavioral2/memory/2860-17-0x0000000000500000-0x000000000050F000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	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 2860 wrote to memory of 4496	2860	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	83
PID 2860 wrote to memory of 4496	2860	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	83
PID 2860 wrote to memory of 4496	2860	2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_f183266513a429c4e265d1d453b34f01_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4496

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
55KB

MD5
7a4ab3fcf2c949077fe4d10642c2e4c6

SHA1
4c0d8cc80eb3e9ba5cf690a4bc9de4d7f66c3175

SHA256
fb260dc720668b39baa25cbe07866a354a9636b009b07845d927adc1def62cc7

SHA512
404f3c54c0c6199fd57f467730f527dbdcefd488105f3c0b2877dd805c82b302cc4903cd207261eda8f84436ff7d606c97eae4060bb3401959871471d2f9262d

Download Submit
memory/2860-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2860-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2860-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2860-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4496-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4496-21-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download