70dea811bf3f2226b18752824aa57873d5f7ed931a0352bbd77df7da7e55545a

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/02/2024, 08:38

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General

Target

2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe
Size

41KB
MD5

58ce4d91c8c9b31589afd7f1945e7484
SHA1

a5b78c9a4b0f904eb607955d767b4362612b27a2
SHA256

70dea811bf3f2226b18752824aa57873d5f7ed931a0352bbd77df7da7e55545a
SHA512

d0344da4c2d09c785b8e5b09bb91c341a9ccaa49e402896c816ec5ca83b28fa3df360860b228f798c5a2a3bf99bcb8d7e25bb12bf3818c8aac96b480bd9bade0
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedYA:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2524-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012243-11.dat	CryptoLocker_rule2
behavioral1/memory/2524-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2320-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2524-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012243-11.dat	CryptoLocker_set1
behavioral1/memory/2524-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2320-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2320	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2524	2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_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 2524 wrote to memory of 2320	2524	2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe	28
PID 2524 wrote to memory of 2320	2524	2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe	28
PID 2524 wrote to memory of 2320	2524	2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe	28
PID 2524 wrote to memory of 2320	2524	2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_58ce4d91c8c9b31589afd7f1945e7484_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2320

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
aa716f791aef36901f21425e7d4028d4

SHA1
7971f6a4f943d3c5f92b9f9fef5928c00d441a63

SHA256
773bfbb4738235bdfa583df9c0fb29b3d61b5470878a83d000be283f987ce57d

SHA512
5cfe0dbc52bf1f1e80231de9c6862376148cd5a7f1a757cbd74884796fbee8c8e969a5eee34b000d511271e804070c4264de36ec5a25d23a59c1659a2995586a

Download Submit
memory/2320-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2320-18-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2320-23-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2524-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2524-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2524-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2524-3-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2524-14-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download