9b8b8f2475bc05ce45912a40fbc864b7500bd22a373ae56949d35f824b386144

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
04/06/2024, 16:08

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General

Target

2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe
Size

47KB
MD5

56d6c4412e730ad72443f13ae8cb1f4a
SHA1

f1c9287d443fbd22f42e7de843a1688c5a50d5eb
SHA256

9b8b8f2475bc05ce45912a40fbc864b7500bd22a373ae56949d35f824b386144
SHA512

499c7b37a56645f2d4d01b07603a7f3d7d78da1b501775b7f07a0916d7630817735b26964002543800d3b49f89f88a408c4e3485640eadeb3cfa5259717c9f40
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoLo:qmbhXDmjr5MOtEvwDpj5cDtKkQZQe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2972-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015cff-14.dat	CryptoLocker_rule2
behavioral1/memory/1728-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1728-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2972-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1728-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000015cff-14.dat	UPX
behavioral1/memory/1728-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1728	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2972	2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_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 2972 wrote to memory of 1728	2972	2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe	28
PID 2972 wrote to memory of 1728	2972	2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_56d6c4412e730ad72443f13ae8cb1f4a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1728

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

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

Filesize
47KB

MD5
69cc4c8482747894c9d8ab99ea13f404

SHA1
cded676d0b8092c50d07d609f48e1d45667f8ebd

SHA256
70fe39b8203d0b563acc6addc33bf70feb22bfa2ffb6ac97a8abc64a62c69d17

SHA512
c16fabc53f87a42b61330f956ae76c5164e4bedf26a3650ea7e6a84e6355bc6e4e165f0a5ad25adba5a47f069ce2af7580375534085961a11b80b6c64554f9e0

Download Submit
memory/1728-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1728-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2972-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2972-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2972-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2972-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download