662d549355ae8c47bad8799c56fb7916e7f03e958b6ceaf107b2bfc77c7b89ef

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 05:49

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General

Target

2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe
Size

53KB
MD5

fd9958c8e66f9ef56a11e25a735b2dd1
SHA1

bcdaaa26eff7d991c15aba4b4e0aba308e90f358
SHA256

662d549355ae8c47bad8799c56fb7916e7f03e958b6ceaf107b2bfc77c7b89ef
SHA512

c380ad5d8f4483e810a6d0b97499ace26434c0d4637c6ac15dfe7d31f06ff3f2622f2e438f1ba9fad740632a2bc43d2369966ed168c2be39fcfed08e2e9eac40
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LJr:X6QFElP6n+gJBMOtEvwDpjBtE1yILJr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015c33-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015c33-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2036	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_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 2228 wrote to memory of 2036	2228	2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe	28
PID 2228 wrote to memory of 2036	2228	2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe	28
PID 2228 wrote to memory of 2036	2228	2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe	28
PID 2228 wrote to memory of 2036	2228	2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_fd9958c8e66f9ef56a11e25a735b2dd1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2036

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
53KB

MD5
cebd0e6fb55c40e479c8a8522d91d8b8

SHA1
7ae99afa892f478d71d2c16b1b6d1743a693bc4a

SHA256
994b52171d8b886824874ff232ce5481262088afc4897948cf60e63c66d77e52

SHA512
fbfc2f4b6a302385f83d0adc4c1e46b7e44aed6dcf65a140564f7faf51c1f41e10ae5a73a6d2c4c4cfc4e13a55f7387ce08219b87a7e454489f74fc5026515d8

Download Submit
memory/2036-15-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2036-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2228-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2228-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2228-7-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download