4e3b3682b4a48613e678d85d07ddac8f3dec66a89b523d65a72469daedcc5326

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 19:54

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General

Target

2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe
Size

48KB
MD5

6f39163bfa0b1f7c43989a6d323382b2
SHA1

271af58bf6035411e489947f3fd504f416e5e9fb
SHA256

4e3b3682b4a48613e678d85d07ddac8f3dec66a89b523d65a72469daedcc5326
SHA512

238a1cb17ae80a4a7fb1aa6dab38f1977a7d471f1b049c7593397d819779fe6e3dbfad9f134a4acc575805654ba554a2ff00057013c93889e4278c85ade0ed14
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkclg:P6Q0ElP6G+gJQMOtEvwDpjB8WMlflg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012240-11.dat	CryptoLocker_rule2
behavioral1/memory/2936-13-0x0000000002800000-0x000000000280B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2936-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2488-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012240-11.dat	CryptoLocker_set1
behavioral1/memory/2936-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2488-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2488	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2936	2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_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 2936 wrote to memory of 2488	2936	2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe	28
PID 2936 wrote to memory of 2488	2936	2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe	28
PID 2936 wrote to memory of 2488	2936	2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe	28
PID 2936 wrote to memory of 2488	2936	2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_6f39163bfa0b1f7c43989a6d323382b2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2488

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
49KB

MD5
047bb6dedbd10407d59bc04620fc238e

SHA1
be18a719fb6fcf2cc18e4e7caeee1a92b51dc7a1

SHA256
3067159dd6580a26b9be76a4d1d4216998d10379d6a06399ff11dfeb7f22ea1d

SHA512
1674ad8e7358176f584ff175936b2e77ab7e5b2951d16351aa573ecb2e22500a533a1763200ee073e1ec592a32ed79634398cb92ee1f5e6e5fae70ae51b11a67

Download Submit
memory/2488-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2488-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2488-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2936-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2936-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2936-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2936-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2936-13-0x0000000002800000-0x000000000280B000-memory.dmp

Filesize
44KB

Download
memory/2936-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download