8e3ab9ba68630f8655e588af40124725974f639a41763bfe90b1cad1f9a78a45

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 04:37

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General

Target

2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe
Size

55KB
MD5

4401242878887e1d84d9c4e7ac61cf4e
SHA1

ed183e890a23843db2beef645eaf7875577b4aee
SHA256

8e3ab9ba68630f8655e588af40124725974f639a41763bfe90b1cad1f9a78a45
SHA512

68fa36b00dd932ac8c4e71baf5655c9493d29e2d6f47e4f8c419c569b8b7a4f84b5b97d1009d854abf77644e3390ae4c18c31172473a68709955c8a835d97db3
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impyx:BbdDmjr+OtEvwDpjM+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2324-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000139d9-11.dat	CryptoLocker_rule2
behavioral1/memory/2324-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2560-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2324-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2560-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2324-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d0000000139d9-11.dat	UPX
behavioral1/memory/2324-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2560-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2560	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2324	2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_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 2324 wrote to memory of 2560	2324	2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe	28
PID 2324 wrote to memory of 2560	2324	2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe	28
PID 2324 wrote to memory of 2560	2324	2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe	28
PID 2324 wrote to memory of 2560	2324	2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_4401242878887e1d84d9c4e7ac61cf4e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2560

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
55KB

MD5
74a80ede9c4917299423e9f0e7b84a49

SHA1
a1ede1fd631b68e59cf44057164c5ff252df9324

SHA256
0a4496f11a934b82f5fe395dbc3b67c7c68c2e666bbc447224d4b693087d3bcd

SHA512
9cd78a0fffa37f3ae81f9bdb113cda9f493dd3904ee6454eef3de8642b4ab4fdc646bb3d8446641c65862fad09da5934e204812fdbbdf0fcd377a461e0b9ce73

Download Submit
memory/2324-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2324-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2324-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2324-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2324-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2560-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2560-25-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2560-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download