08a25a96ffe2af9b6cf405e211adb512a04b1f8c334663e2d9d9ddef9819309b

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/06/2024, 07:46

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General

Target

2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe
Size

44KB
MD5

a05377d588ace4c20c1099734ac4aa64
SHA1

045e6dcd255f5c9cec512f24f585b072065bd9bd
SHA256

08a25a96ffe2af9b6cf405e211adb512a04b1f8c334663e2d9d9ddef9819309b
SHA512

07f6c367177a47e04b7e12747c7e6fa8775c562de0608c64f6e723e158ed037252505a92127165bba10e06c979bd0858575d3d2848249346bf2a68faf4db3b90
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH0I:bCDOw9aMDooc+vAUI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2648-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015a2d-11.dat	CryptoLocker_rule2
behavioral1/memory/2648-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2828	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2648	2024-06-10_a05377d588ace4c20c1099734ac4aa64_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 2648 wrote to memory of 2828	2648	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	28
PID 2648 wrote to memory of 2828	2648	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	28
PID 2648 wrote to memory of 2828	2648	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	28
PID 2648 wrote to memory of 2828	2648	2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_a05377d588ace4c20c1099734ac4aa64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2828

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\lossy.exe

Filesize
44KB

MD5
2c01273e75ca0e36ae1d4c6c5b9a3511

SHA1
40f2637e94521af1b1084007e0dc5b67f1e25ff8

SHA256
6a05d3393774a8114361e4eca6ea61df4a8499b5ca3c452f01a6d2bc4377bb44

SHA512
f48d31c5bf1bb9c12692336d008b5e3327ea10747bcee08c66d92682df1ddffa069fd1b901fd4449e6c369e584f226b59c4fd81ea06e536acd308c2e24e5f72b

Download Submit
memory/2648-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2648-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2648-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2648-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2648-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2828-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2828-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2828-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2828-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download