96c5fc81ecad2bc2cb55dc65a5034a9341df4abd53e57f44cb6f694ae0bfee09

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 06:25

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General

Target

2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe
Size

32KB
MD5

32dbb436a5a2c1406ae580f383d9d763
SHA1

d8b3f233bfca6562caf4adf48f24e007932630b8
SHA256

96c5fc81ecad2bc2cb55dc65a5034a9341df4abd53e57f44cb6f694ae0bfee09
SHA512

75ad04dd3dcbcb6ee7fec2ca3694d0b4281fb5195d323e9e17d0c5eefc8ad4b653d739bdb2057af6dd18676271982b254d9702d62ee08cbede7477752f1fb6c8
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHbjN:q0zizzOSxMOtEvwDpj/arql

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_rule2
behavioral1/memory/2612-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001224f-11.dat	UPX
behavioral1/memory/2612-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2612	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2512	2024-03-15_32dbb436a5a2c1406ae580f383d9d763_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 2512 wrote to memory of 2612	2512	2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe	28
PID 2512 wrote to memory of 2612	2512	2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe	28
PID 2512 wrote to memory of 2612	2512	2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe	28
PID 2512 wrote to memory of 2612	2512	2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_32dbb436a5a2c1406ae580f383d9d763_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2612

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
32KB

MD5
c6c7cacf696df7d2baa74f23c0e3f74c

SHA1
08f7f370aac985c1a7bca2cee089a06acccbb73f

SHA256
627b3f1c0b48b1c1832bf148fb3da2bb5bce7a2134c6b9a86857c0c1b37702d9

SHA512
577d09e8d1017f38b16df668d4d9c392a1f62581c6db6d047bcf6e7711e79122b7761eceece36f6613d05bcdaaa1ac61d75423aeaf816f0cc824bcb39c0a4e2d

Download Submit
memory/2512-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2512-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2512-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2512-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2512-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2612-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2612-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download