f4a534a00e13fb2740237eeeb3686f249c0e975c6ccb6027d0a4ebf232f7e0be

Analysis

max time kernel
149s
max time network
159s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 08:43

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General

Target

2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe
Size

47KB
MD5

8e35f4445a57a034d79f3efbd3cf9af2
SHA1

2ebfb40b7f6877ad69f737c1b5f718d851f85ccc
SHA256

f4a534a00e13fb2740237eeeb3686f249c0e975c6ccb6027d0a4ebf232f7e0be
SHA512

880fc26b1c60c79af7852d0a65a85577d6f322045b09f28c33eb45974f7ca8e36e1f7b761b97b45356d92d1c612a6a87ca4fbee5caec3866bab1e007dc0a0fed
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRKA:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012267-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012267-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2308	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2232	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_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 2232 wrote to memory of 2308	2232	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	28
PID 2232 wrote to memory of 2308	2232	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	28
PID 2232 wrote to memory of 2308	2232	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	28
PID 2232 wrote to memory of 2308	2232	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2308

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
c7f3019a8d1df7ea2566100349ac6b75

SHA1
ea6db5944e210e7b4e622f28b4e152f42d639910

SHA256
e83759f181c15ea6817bf59e5d7a6886091e524944f86dfd6ab07da260628108

SHA512
aba9fc0cb5317e9986c78716ec48e2b4da958a3b84bffab8c23c9ec70e990b14be93a013dcd3c04261bb5b15e547da9f75b2eea54c340d39772d4c203ce6960a

Download Submit
memory/2232-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2232-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2232-1-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2308-15-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2308-17-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download