f554af07326ac89645d1057060d1a6e1e98e4e90b1cad07ac6f28ab023fc0411

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 15:33

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General

Target

2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe
Size

49KB
MD5

ca3bc8dca47584d3c2ca5ec7f4618c80
SHA1

857ea96693c84ffe16f78b545a81f29411f24203
SHA256

f554af07326ac89645d1057060d1a6e1e98e4e90b1cad07ac6f28ab023fc0411
SHA512

f8fab70617430e18429042e2f9564335c12efd94a1be6d6f35eea1e602d66029533beab60ed074fe05568f5ea207d9f7870d9314d5bbf4e69d1a136da68b8198
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MocbB:qmbhXDmjr5MOtEvwDpj5cDtKkQZQI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1244-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014319-14.dat	CryptoLocker_rule2
behavioral1/memory/1244-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1236-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1236-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1244-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1244-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1236-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1244-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000014319-14.dat	UPX
behavioral1/memory/1244-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1236-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1236-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1236	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1244	2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_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 1244 wrote to memory of 1236	1244	2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe	28
PID 1244 wrote to memory of 1236	1244	2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe	28
PID 1244 wrote to memory of 1236	1244	2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe	28
PID 1244 wrote to memory of 1236	1244	2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_ca3bc8dca47584d3c2ca5ec7f4618c80_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1236

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

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Downloads

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

Filesize
50KB

MD5
2cd2c0e014bbf29aeac2a4392981bb64

SHA1
c9c5f8c83887c252684518851327d54d3decb150

SHA256
f4f86c51f704e109fb469bb4833be92254bc99104fb0a0b6362aed6bea475214

SHA512
e468c427d67bf3cdcdd20109bf8b7c71053372784d4ed69900fcdcbbf9f7b02c75cd48edb9916caf2d3dad8621c69ec1b8364925a8cfdeb812e3a7077a24eeca

Download Submit
memory/1236-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1236-25-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1236-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1236-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1244-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1244-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1244-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1244-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1244-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download