7b226d4202f1970d5688152bda966a91d6b113f7a2b9e08f497b151914811a8a

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 00:42

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General

Target

2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe
Size

40KB
MD5

98a28753cb2b6ff8a3b4017405819a23
SHA1

a3a2b1dc82ffe1565126b1d146abc8e04a05a4c2
SHA256

7b226d4202f1970d5688152bda966a91d6b113f7a2b9e08f497b151914811a8a
SHA512

f33bacb13fe40ef4dc1153f4a496a502879f2e3d92ebe3a9678f3c8ddeead726822b4d9f827439d5c90599134d5758062c96da26ab5828a6966b587a71d50275
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAnlB:bCDOw9aMDooc+vAlB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/936-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001220d-11.dat	CryptoLocker_rule2
behavioral1/memory/936-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1704-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1704-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1704	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
936	2024-03-28_98a28753cb2b6ff8a3b4017405819a23_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 936 wrote to memory of 1704	936	2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe	28
PID 936 wrote to memory of 1704	936	2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe	28
PID 936 wrote to memory of 1704	936	2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe	28
PID 936 wrote to memory of 1704	936	2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_98a28753cb2b6ff8a3b4017405819a23_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:936
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1704

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
40KB

MD5
8b2d6d528e4e368e2e494e8b46c23f5f

SHA1
62d1a72373a175686734f40b040b4c81f0d1ff9c

SHA256
72251a8db035449f4794114130eb964cd118925b78769fb96b5a878c67847451

SHA512
7b6f90288d46c8d77465dae2338f416938671f076217f34f80e06fef5a034983f134d4382ac6b3dc3461213712b47d99dd23b8497d2235d9fa0e3188ad105cc9

Download Submit
memory/936-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/936-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/936-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/936-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/936-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1704-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1704-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1704-25-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1704-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download