636a5b4dfa8d48a06b1e33e4de4b552ccbe12d0658777549267416701edc121d

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 20:05

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General

Target

2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe
Size

83KB
MD5

d5e732b50ec7990179d597892adaa73a
SHA1

cf85d29a36b9d34ecf01fcb2c55812b9c8f293de
SHA256

636a5b4dfa8d48a06b1e33e4de4b552ccbe12d0658777549267416701edc121d
SHA512

aadf4bdbcbc901622a2c8607b276f8cca2241841e19c2bbd5c69da61cdbb40d88fcf207f93e147f61761cef09c7d8d9fa9a9a2de1406b485909a4a75d8e1d15b
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnJ:V6QFElP6n+gMQMOtEvwDpjyaLccVNlP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012256-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012256-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2064	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2860	2024-02-23_d5e732b50ec7990179d597892adaa73a_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 2860 wrote to memory of 2064	2860	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	28
PID 2860 wrote to memory of 2064	2860	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	28
PID 2860 wrote to memory of 2064	2860	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	28
PID 2860 wrote to memory of 2064	2860	2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_d5e732b50ec7990179d597892adaa73a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2064

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
83KB

MD5
25c552d7241a0687a5578a34de54c1f4

SHA1
3711c17bab505cd66bd7583c21245be3921869fb

SHA256
829264e0f38495ded80d25ddf4b1ca7114e2e276b3ec0ff79e33cec5e6237384

SHA512
fe9499f6f92001da8192cde93ddaaf41c203ffe221d6ff4fd1bf01b77d6c6e629a4166e1f9cace611de559a549b6711f597ec8f1edea569b673493cb192fce01

Download Submit
memory/2064-16-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2064-15-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2860-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2860-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2860-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download