538b66cb8710498cd0aee1233a1e2bb55f8c451cb2061cc93b68253175c2db5b

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
22/05/2024, 05:56

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General

Target

2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe
Size

41KB
MD5

803d249989d49db9671138a236cb8036
SHA1

054aa449ba310b7ebc9921e6c8f5d4772908bef5
SHA256

538b66cb8710498cd0aee1233a1e2bb55f8c451cb2061cc93b68253175c2db5b
SHA512

17609c1f1532ce385ea19ae7f6fb2c0e4b74d9fd2bcea93909b83aad343be2439b56ddf7f8981edb6dd6bd3d676a5397813e19505a1ef98baeb03b086708d04d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9Oro:X6QFElP6n+gJQMOtEvwDpjBsYK6r0ro

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014502-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000014502-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2508	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2072	2024-05-22_803d249989d49db9671138a236cb8036_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 2072 wrote to memory of 2508	2072	2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe	28
PID 2072 wrote to memory of 2508	2072	2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe	28
PID 2072 wrote to memory of 2508	2072	2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe	28
PID 2072 wrote to memory of 2508	2072	2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_803d249989d49db9671138a236cb8036_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2508

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
41KB

MD5
c94de950b5ec443e4f14e68075ffee09

SHA1
b7c939abeeb047c1da5fd07a14e5ab3963d8e85e

SHA256
43cf1473bcd20c53d03942511afabe16a4150f158a4e3b830bb7968478385038

SHA512
ab629b2a278bfbf69f34562f5334c7c429512aa873bde28c2a7ccf11e61aea7115231524b233611d2e16f222a2fc1856ba2252addbe28f22d501c6af2cead9cd

Download Submit
memory/2072-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2072-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2072-8-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2508-15-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2508-22-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download