47f1340084e8246053edd146578c808184ca5a36933ab8ebb8b99d483364c3dd

Analysis

max time kernel
142s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/03/2024, 13:24

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General

Target

2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe
Size

53KB
MD5

06645ea8bbc515db86efad97e2b3d107
SHA1

5870c7618d8145ccdd95d8ab4c1f8b4d812d7b65
SHA256

47f1340084e8246053edd146578c808184ca5a36933ab8ebb8b99d483364c3dd
SHA512

e4aa65b294daea0005a803fdce9997a1ec9e245c9f7fef91f20b410cbbf32fca2254d40a19e317e25e8de59f679f6b7bac726f848e80ea3f266c6177e7eb5a04
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyT:BbdDmjr+OtEvwDpjMA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2236-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2236-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2236-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2236-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001224c-11.dat	UPX
behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2236-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2236-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2236	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2320	2024-03-18_06645ea8bbc515db86efad97e2b3d107_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 2320 wrote to memory of 2236	2320	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	28
PID 2320 wrote to memory of 2236	2320	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	28
PID 2320 wrote to memory of 2236	2320	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	28
PID 2320 wrote to memory of 2236	2320	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2236

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

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

Filesize
53KB

MD5
a493a31f5d09c6bbf02902d6388c10ce

SHA1
4b7d40d65d800c368edb12b43102eb1bf33508f3

SHA256
d7abb18ca450581542c197f8a3abb1be322e2ceb4708da708c19225d87d07fb8

SHA512
7699af10b95f9dd4d05b14db859588bed1a93aad1de8b963eba6d2c9e6ef5324dfaaf190df7c8a263b706be573812e629fe3ecd7caa3c8066473a52df20ae527

Download Submit
memory/2236-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2320-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2320-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2320-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download