4c079ccf50da96b753ba0e7e38c7e194b37732c1a807a5a6c9d87de4747ffaa5

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21/05/2024, 18:50

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General

Target

2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe
Size

71KB
MD5

eb494cc659bacc266b0e619a71984940
SHA1

b6e05bb36df21803d6093db080054706cb7ceb05
SHA256

4c079ccf50da96b753ba0e7e38c7e194b37732c1a807a5a6c9d87de4747ffaa5
SHA512

3975ae81dfe1b0a0d4cd42598022e2c621a3a38b4197b16b3f5c9e79358b64974a54b7b1d3c15c754be0a752e3fac5364a2e3e13cc3cd795a7addd023d71d2c6
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOa:DW60sllyWOtEvwDpjwF85Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012280-11.dat	CryptoLocker_rule2
behavioral1/memory/836-13-0x0000000002020000-0x000000000202B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/836-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2356-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012280-11.dat	CryptoLocker_set1
behavioral1/memory/836-13-0x0000000002020000-0x000000000202B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/836-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2356-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2356	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
836	2024-05-21_eb494cc659bacc266b0e619a71984940_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 836 wrote to memory of 2356	836	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	28
PID 836 wrote to memory of 2356	836	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:836
- 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

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
72KB

MD5
7e81a34ecb4bb2fd9656c0482f0611bd

SHA1
2ee1d0204eff83110b6ab26f3092251fc7c2ce9a

SHA256
03d8b942f8d76a201adaa27a400341def4f89d3878b1d9dfd87444e4fff93590

SHA512
d91476dfd57b85f5063f132b7a1022825f8860080725fcfd7242de48fa2cffea7e6e747cdb4000d0b3f77941d289b3f738e43a021fed6bfc00984df577331e96

Download Submit
memory/836-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/836-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/836-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/836-13-0x0000000002020000-0x000000000202B000-memory.dmp

Filesize
44KB

Download
memory/836-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

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

Filesize
44KB

Download
memory/2356-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2356-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download