c321d61c3b58b29cb33b76e6a60f61bcb04995c6daf55143d7c6eeddffab24be

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/04/2024, 03:47

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General

Target

2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe
Size

50KB
MD5

a91c515633e4c39724730368f0132f68
SHA1

aa4b974cdbc22a47290b3123a978be58ef3842f5
SHA256

c321d61c3b58b29cb33b76e6a60f61bcb04995c6daf55143d7c6eeddffab24be
SHA512

c71f1a2fb3f9d0f98735e13fd1c489ff719287349fc00b85e59d6c52b25deaabd94645a7be7af88a13d57f1bfc38b333343c4de0e038ac3e1a92d5552ed129cd
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojkRaB:V6a+pOtEvwDpj4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1540	2024-04-10_a91c515633e4c39724730368f0132f68_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 1540 wrote to memory of 2940	1540	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	28
PID 1540 wrote to memory of 2940	1540	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	28
PID 1540 wrote to memory of 2940	1540	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	28
PID 1540 wrote to memory of 2940	1540	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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
51KB

MD5
c8fb3748493893404a835301f4370401

SHA1
b30d0759a3b25c96fce77abb19bb74b908e372a4

SHA256
ed1029bcb2119fb21f0742e6da903871ea9767aea54c256b28fe1aade52b9d04

SHA512
01beff1139a847bf526b3befefb14fbe14394a4e7a9563b064fee6fcabbf3e7ae3de3aac3887b561b8caf35a4c01453902947cd00b7085a855be135146037020

Download Submit
memory/1540-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1540-1-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1540-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2940-15-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2940-22-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download