81815d5cb520b45c7c4ffad156004beda81479e80fe51d5f39b608b71cc0b54d

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 09:29

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General

Target

2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe
Size

46KB
MD5

89c109a68e4fadafa7212d33ca746be6
SHA1

665e18fec6ea6b25191f3ff26a41457ad46fc987
SHA256

81815d5cb520b45c7c4ffad156004beda81479e80fe51d5f39b608b71cc0b54d
SHA512

d2c89233e06afabd97a5daa7e072ce52216b138650982be9e6e140345927d029b7d0e2d8e7131d7e7359bb7c8f92047e4d14880f5922111f97be6b5e14eb6d5b
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2VG:79inqyNR/QtOOtEvwDpjBKccJVODvy3b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2972-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015cff-11.dat	CryptoLocker_rule2
behavioral1/memory/2972-12-0x0000000001D60000-0x0000000001D6F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2972-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2972-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000015cff-11.dat	CryptoLocker_set1
behavioral1/memory/2972-12-0x0000000001D60000-0x0000000001D6F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2972-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1728	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2972	2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 1728	2972	2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_89c109a68e4fadafa7212d33ca746be6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
47KB

MD5
b2b61224eaf466c0785295085117ce5f

SHA1
5aa6754c2dd38eaf4c73feb16fc128de3366cf62

SHA256
a47f1eacab94ae23c3b92524cfbd8f0136bb74a55748455a125114ceedfe6d88

SHA512
2dab291ae9a1389465526e8bde25d3520a899af720ed2103edc0ac34d12c98512d78013ca3bbe09868a201e99d25f35a54dd623e62e8b57870785dda26caac53

Download Submit
memory/1728-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1728-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1728-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2972-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2972-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2972-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2972-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2972-12-0x0000000001D60000-0x0000000001D6F000-memory.dmp

Filesize
60KB

Download
memory/2972-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download