9f1f518d99125fdb0734c9bf9823c74e8242bcbf0b4166e11480de06a897d7e9

Analysis

max time kernel
149s
max time network
159s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/05/2024, 19:31

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General

Target

2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe
Size

43KB
MD5

7b240d331840a2039a2c7d1affcca173
SHA1

a86ee489b222a41cf6c0262503a77365b95af5b0
SHA256

9f1f518d99125fdb0734c9bf9823c74e8242bcbf0b4166e11480de06a897d7e9
SHA512

efd69f1beb5bb21606b1b4c97fb2702fa31c33ef7805edb83f4dba33dc09403a4c8e7022d01b302a9cea88bf18c026e1e0c1cd1001809e23716b57db4b93d1fd
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH+:bCDOw9aMDooc+vAe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2180-1-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122b8-15.dat	CryptoLocker_rule2
behavioral1/memory/2180-14-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2504-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2504-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2504	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	2024-05-21_7b240d331840a2039a2c7d1affcca173_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 2180 wrote to memory of 2504	2180	2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe	28
PID 2180 wrote to memory of 2504	2180	2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe	28
PID 2180 wrote to memory of 2504	2180	2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe	28
PID 2180 wrote to memory of 2504	2180	2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_7b240d331840a2039a2c7d1affcca173_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2504

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

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
43KB

MD5
f8a484ec8b7730b97d5f661b8468a045

SHA1
400453079fde07bc23ecfb80b2307e4fd282f434

SHA256
7b6f632ef0741237359033221c2a14a6f2621cdc2086d4a3e8f7b906899f9016

SHA512
4ca5f8a4897e545a5b088a1dd8b67ceb97d74047aa64a36753de316c1e8e12ae483eb42d7871f0863ee3445472ff4f1f5e85c5c5bc4e3b63c5892d21cc60ebf5

Download Submit
memory/2180-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2180-1-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2180-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2180-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2180-14-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2504-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2504-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2504-19-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2504-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download