4ea516767e1c58e97f4c10330f6ad2d77e4e48596a0cb21123ff630edb7b591e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 12:56

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General

Target

2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe
Size

38KB
MD5

be1d0faad45f77f34af52bda964e214c
SHA1

ef8580435a4737fb5f2c3da3b68e443a8cf6e634
SHA256

4ea516767e1c58e97f4c10330f6ad2d77e4e48596a0cb21123ff630edb7b591e
SHA512

1ef6da14eedcf0da2f8ff54d34034172a27c0d32da361e6de9272028f38ccc7cff33742e10de6985d46764a5ec464bcec349e1d8c4dfe1fee22e85b2e18e27a9
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5ax9vE:V6QFElP6n+gMQMOtEvwDpjyaYa7M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012331-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012331-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2736	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	2024-03-05_be1d0faad45f77f34af52bda964e214c_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 2292 wrote to memory of 2736	2292	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	28
PID 2292 wrote to memory of 2736	2292	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	28
PID 2292 wrote to memory of 2736	2292	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	28
PID 2292 wrote to memory of 2736	2292	2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_be1d0faad45f77f34af52bda964e214c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2736

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
38KB

MD5
5618ca9d33f9646b54e193034e804928

SHA1
98e775aaefdceeb1ea8d9a0abda1f343542696c7

SHA256
502d0aea48f455671fbc013d181b8553fbd48409b306d8e8921ac9f1a336290e

SHA512
33a2792b565acb805f2e6a86eef80d04e7ec6de32c71989f1748dabeb01ef1d4c9bd1fec60d10231a857ba35d1d87e26085a402b4adb8a2a2251b4366f734a51

Download Submit
memory/2292-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2292-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2292-7-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2736-15-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2736-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download