f7ef7492acd64edebd38128e8132f58e198ba40005f631696dbf5a25265866d9

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 01:00

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General

Target

2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe
Size

39KB
MD5

2d3b7a94d371bdb0e875337b2c5d62df
SHA1

e9a4b43d8990b9a385540cc8c21509fc427b65eb
SHA256

f7ef7492acd64edebd38128e8132f58e198ba40005f631696dbf5a25265866d9
SHA512

3b5db9276afec7d579b4eb3dd16e291b67d235c794830c1c7c739a1e6104216f549883cc597d39045067675344314355719c629aa776125c57331f6cfb417c5b
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWL:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1744-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2664-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1744-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1744-13-0x0000000002380000-0x000000000238B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1744-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/2664-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1744-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1744-13-0x0000000002380000-0x000000000238B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2664	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1744	2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_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 1744 wrote to memory of 2664	1744	2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe	28
PID 1744 wrote to memory of 2664	1744	2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe	28
PID 1744 wrote to memory of 2664	1744	2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe	28
PID 1744 wrote to memory of 2664	1744	2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_2d3b7a94d371bdb0e875337b2c5d62df_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2664

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
39KB

MD5
450ad71453c46244a00e0b21c13e19d8

SHA1
cc138b6b26f80b354af0e6226ecfd24d03afd204

SHA256
a7e3e9f2491266c00a217179d578740fe69410db8763ec6f107136b220628d9e

SHA512
0fe5f6e48301607cf767f0188d2f9da4bb06a96cc43f103cd2072cf2bc4434913a926a51550665100e81198a119cbd6af9a0d4cbd1c2b57badde0280359966bc

Download Submit
memory/1744-0-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1744-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1744-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1744-3-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1744-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1744-13-0x0000000002380000-0x000000000238B000-memory.dmp

Filesize
44KB

Download
memory/2664-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2664-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2664-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download