c62fbac09fd71f39a8f4b7cb158545db53f8deea18c11d1d71f1e8867d012a65

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29-05-2024 16:43

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General

Target

2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe
Size

53KB
MD5

cdab87ad571fe407eda2e2fe986b1443
SHA1

94c2ff84a6806be48e9ffc65853b3d018838a15a
SHA256

c62fbac09fd71f39a8f4b7cb158545db53f8deea18c11d1d71f1e8867d012a65
SHA512

612e2b581a2b8e831d01e3dd1510562931027c7606a2b534a6fb361b882578cfda2bf976fb7cff6d725085b32eead44864381c6358a179a9900dcae72537652c
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOXr:bODOw9acifAoc+vw

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/1976-8-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000014b27-11.dat	CryptoLocker_rule2
behavioral1/memory/2792-23-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/1976-8-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x000c000000014b27-11.dat	UPX
behavioral1/memory/2792-23-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2792	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1976-8-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000c000000014b27-11.dat	upx
behavioral1/memory/2792-23-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 1976 wrote to memory of 2792	1976	2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe	28
PID 1976 wrote to memory of 2792	1976	2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe	28
PID 1976 wrote to memory of 2792	1976	2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe	28
PID 1976 wrote to memory of 2792	1976	2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_cdab87ad571fe407eda2e2fe986b1443_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2792

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
53KB

MD5
b3ba252a258f63149217dfd001e6faec

SHA1
d4f4ec4b79c1df7093d63d0648c75e69fad9f616

SHA256
cedebb9be7d00e63cf60355427157a1ddf90c9a2d81716d6f342cfb838629693

SHA512
fb2e94013d7129b6a3f9a64062aa0b78ea3c8dcd58e2f17582e52970905419062572da8c089c281e955d732ad8386b51760b7defe6157b7035fd609186e1ffa7

Download Submit
memory/1976-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1976-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1976-8-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2792-16-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2792-24-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2792-23-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download