4e0f390995b80f44c2aa590aa60af099c6d11253e8646ad7ca32b5008fc0f436

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
16/05/2024, 19:32

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General

Target

2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe
Size

49KB
MD5

2e8ba9360a8b7d56fcda67cfffaecf23
SHA1

bab738573b0b98ad6c859afa6e69ccb80bdebd11
SHA256

4e0f390995b80f44c2aa590aa60af099c6d11253e8646ad7ca32b5008fc0f436
SHA512

426ce9d0010b7ac44047e03867c12f54eaf103ba651025093af460977771578637fc4815677c89bbb0d29b1e412eadb9df55830be694e40fa75b3b80a5e6dc15
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcAYZR:P6Q0ElP6G+gJQMOtEvwDpjB8WMlf/ZR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2964-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000015653-23.dat	CryptoLocker_rule2
behavioral1/memory/2872-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2964-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000015653-23.dat	CryptoLocker_set1
behavioral1/memory/2872-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2964	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_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 2872 wrote to memory of 2964	2872	2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe	28
PID 2872 wrote to memory of 2964	2872	2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe	28
PID 2872 wrote to memory of 2964	2872	2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe	28
PID 2872 wrote to memory of 2964	2872	2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_2e8ba9360a8b7d56fcda67cfffaecf23_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2964

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

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

Filesize
49KB

MD5
090b105613e0cfc58958772085f45eeb

SHA1
8d72cea2a22b99d72ab9063e115d4f6071136c02

SHA256
256036c5212809153c4e60766a31a114a7cb284292540fd8414cf1b684c415b9

SHA512
25b4f46f2aaecb5e5d5deeaa7704397cdb378c731dcc324c6e8b39e71b86cc1405df4b72ad662077b71f52dd27dfe0324560fd6e5426806bfa26dbf7b9bdd75c

Download Submit
memory/2872-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2872-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2872-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2964-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2964-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2964-17-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download