f5709fb50f7030ba0078864ec38276e3a53b854be7c15372852e4e1e3c5c7c68

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 01:23

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General

Target

2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe
Size

58KB
MD5

35bff181911e528d7193ade301126c7a
SHA1

f92045992d14f037c70b9af9eee7a1915079fab8
SHA256

f5709fb50f7030ba0078864ec38276e3a53b854be7c15372852e4e1e3c5c7c68
SHA512

e851af4a04e93a501a1a167fcc016136fe0e2e2906d2fa64c77e74e116c264cbd8bea4a5e8590bd485fcae05139cac292547295f47edd02adfd70a1d2cfecec3
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/rL:V6QFElP6n+gMQMOtEvwDpjyaLccVCb/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001224e-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001224e-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2704	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-02-21_35bff181911e528d7193ade301126c7a_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 1736 wrote to memory of 2704	1736	2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe	28
PID 1736 wrote to memory of 2704	1736	2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe	28
PID 1736 wrote to memory of 2704	1736	2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe	28
PID 1736 wrote to memory of 2704	1736	2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_35bff181911e528d7193ade301126c7a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2704

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
58KB

MD5
f947cb83a427950e823ff0f8d5cc49a4

SHA1
65e86d76c1a564d48a62dc50ecc7afe17f622ae8

SHA256
ea0ad189bdc4bee982969d6ab83832e2416cb11d7b68b18187c1cc8ef6434ee8

SHA512
e3ab9d6bd6fc422ab430670c748025b4cbc6d62d804f428a9a13560509e3141009c91b9cf0834e558de0a840509e436a5e8b58d1359eed5da687ee11812a928b

Download Submit
memory/1736-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1736-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1736-8-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2704-16-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2704-15-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download