d4b1d6a4b823117682fb89c76959441e935b6fc5e78b2e802c5045c36cfb0a63

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 06:29

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General

Target

2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe
Size

44KB
MD5

914323bd940153013d76a4d796d7d111
SHA1

7fa0ba93decd741daa1f0804b9ca882265fbe918
SHA256

d4b1d6a4b823117682fb89c76959441e935b6fc5e78b2e802c5045c36cfb0a63
SHA512

096ae968c6e4e48c2c61230b49caa8095304a32fd87b21a097df1aea66ab0685d200e754df79d9b98f9c91238dc6d91587091e135097add317088471d4b0cbde
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPg:P6QFElP6k+MRQMOtEvwDpjBQpVX5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2340-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015f01-11.dat	CryptoLocker_rule2
behavioral1/memory/2340-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1960-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1960-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2340-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000015f01-11.dat	CryptoLocker_set1
behavioral1/memory/2340-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1960-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1960-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1960	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2340	2024-04-17_914323bd940153013d76a4d796d7d111_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 2340 wrote to memory of 1960	2340	2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe	28
PID 2340 wrote to memory of 1960	2340	2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe	28
PID 2340 wrote to memory of 1960	2340	2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe	28
PID 2340 wrote to memory of 1960	2340	2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_914323bd940153013d76a4d796d7d111_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1960

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
45KB

MD5
80189f0aaefe781a2839caff4a33c3e9

SHA1
13f0c7ee98ba4a82cdbf3b07e47c8e9157205a8d

SHA256
ee8242b980fa40c7d25a8407bea4d94c626579d5c58a56bc7a15622455b204e0

SHA512
39a4f1d2df12a58e332892e81c95fcbdc049a6699a46680757223326171e9af5cc25d5d64f16d6efe9b1447adaa69313555f9b4412e3221aa6b299b4f51f4143

Download Submit
memory/1960-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1960-18-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1960-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1960-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2340-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2340-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2340-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2340-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2340-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download