e9a7c33a946d56a54dd9e0bdb0f29b8e8af9a6bcffa87f95173abcd64a571ae6

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 17:57

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General

Target

2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe
Size

91KB
MD5

b449815b8620186850f685b00a360a7b
SHA1

ee2ab4c1b31a6d2d93c728c34613aeda1275958f
SHA256

e9a7c33a946d56a54dd9e0bdb0f29b8e8af9a6bcffa87f95173abcd64a571ae6
SHA512

d5cf9ba9e10207109e6538780d9b90c65624b497b2f003886a73d2872b35a26d41d8a11a295eafdb9688031c276ba0137a1ca6bef160eebbe78d85470687ac19
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgLL:V6a+pOtEvwDpjtzT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2168	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	2024-04-23_b449815b8620186850f685b00a360a7b_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 1688 wrote to memory of 2168	1688	2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe	28
PID 1688 wrote to memory of 2168	1688	2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe	28
PID 1688 wrote to memory of 2168	1688	2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe	28
PID 1688 wrote to memory of 2168	1688	2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_b449815b8620186850f685b00a360a7b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2168

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
91KB

MD5
56d31ab173545c634eff254efd13c781

SHA1
3eb6f593f1284705fa64023ea37a9582ffdf8bf9

SHA256
dc39593d175bdc0a7e1e8d3d608a957b25f94d6b557f046cad5cb05dd43e208f

SHA512
5cbedebd32608b5e612fcd84c9dc890110d00564cdca723dd070baff4e2f69935663758c7dfaa889c8ccbc81a5e0003985a033ae11e8b06795c9b1d36d5ff197

Download Submit
memory/1688-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1688-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1688-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2168-15-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2168-22-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download