9fadb5e86b1a4ef3902c4617c4aa8d2c48b720f1e65b2278a95485226de7c532

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:30

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General

Target

2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe
Size

56KB
MD5

65c2ed41227c679de88ccfb2b12ac7b7
SHA1

21efdb8ecd469881d9ee1ef1e2bbb0fb662c6378
SHA256

9fadb5e86b1a4ef3902c4617c4aa8d2c48b720f1e65b2278a95485226de7c532
SHA512

f796787209a27948678ba45053ebaaa15df7201a6a5fbee9e91a8d305354082383ed87e776be940b53b265d3a550009b06014b408b1ab51f64c747e5e9d45896
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PTB:BbdDmjr+OtEvwDpjMT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2756-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2756-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2756-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2756-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2756 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe

pid process

2148 2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2756	asih.exe

pid	process
2148	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe

description	pid	process	target process
PID 2148 wrote to memory of 2756	2148	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe
PID 2148 wrote to memory of 2756	2148	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe
PID 2148 wrote to memory of 2756	2148	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe
PID 2148 wrote to memory of 2756	2148	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2148

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2756

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
57KB

MD5
bb45e1201d21351c7af45e0afe6e0ec0

SHA1
c4fb0fb6cb81237f30fa27540bb8d7e0319209a7

SHA256
0b61be1ee2303c13064d0a43e458f7e43f822310ce835aed088098c7e37e7b18

SHA512
21134ac343c7961d004f5dac5689dd3e51a748741cfccdab7be88ebb3247efb274360b5a740864634e722c2be258dcf21a14193478223185db857ac7adee62a5

Download Submit
memory/2148-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2148-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2148-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2148-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2148-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2756-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2756-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2756-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download