517cd83a4c51363f3ec4cbf66549666799b63f75f8a282e7df5a110b986f64b9

Analysis

max time kernel
132s
max time network
144s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 10:15

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General

Target

2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe
Size

44KB
MD5

ac8b758def8c9b487885246eb57d6aee
SHA1

e2eca5b3ecb11cf71a884e9ff2ba679bc09b22aa
SHA256

517cd83a4c51363f3ec4cbf66549666799b63f75f8a282e7df5a110b986f64b9
SHA512

82e2c086c4cc397ccb0b563b938f74785358e71dd5ac0cf9c76ed75c3ce0b0385bbb15bb6cda42ca2bf81a6944dd776704a64b126a8a09f7a4b9fc9a45184b15
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSJJl:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1604-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001225a-11.dat	CryptoLocker_rule2
behavioral1/memory/2336-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1604-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1604-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001225a-11.dat	CryptoLocker_set1
behavioral1/memory/2336-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1604-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2336	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1604	2024-01-19_ac8b758def8c9b487885246eb57d6aee_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 1604 wrote to memory of 2336	1604	2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe	28
PID 1604 wrote to memory of 2336	1604	2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe	28
PID 1604 wrote to memory of 2336	1604	2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe	28
PID 1604 wrote to memory of 2336	1604	2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_ac8b758def8c9b487885246eb57d6aee_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

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
44KB

MD5
4af7582930ed51465c94f452f15f0356

SHA1
d3d3cea10872a3944019eb3c4aefb04f290142a8

SHA256
0d057a3af9c4bb6de713e6dbb7638fff057a53d0860343cb839d2202b226d8ec

SHA512
66486bc6e0500f6abcf9d72dc15c5b6a87b4c3ec6ad1c62e45f5c951e91b0351a54d01ffee54c31b66b929683a4dede451c5b613ed00539b07ae6bd7434c2642

Download Submit
memory/1604-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1604-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1604-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1604-4-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1604-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2336-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2336-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2336-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download