90cfac4a8b4a6df729d691b50046ff2b5f3541f8ac380107648774b9002a72f0

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
12-05-2024 20:23

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General

Target

2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe
Size

32KB
MD5

33857cdb5609c11f3095cf4653b177a2
SHA1

2048b1614ba611e521de7fe0b9e0c4d5c3d40db9
SHA256

90cfac4a8b4a6df729d691b50046ff2b5f3541f8ac380107648774b9002a72f0
SHA512

3c35715bf94d7593033a2492f5737f155753752bdaec49ed243aff526b877ccb338252da4bb0f83a915acc8ebc8f16d5fc8ccd4d8cac19dbec98998ab08506dd
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGQF:bG74zYcgT/Ekd0ryfjrF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1800-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000122b8-11.dat	CryptoLocker_rule2
behavioral1/memory/1800-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1804-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1804	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	2024-05-12_33857cdb5609c11f3095cf4653b177a2_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 1800 wrote to memory of 1804	1800	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	28
PID 1800 wrote to memory of 1804	1800	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	28
PID 1800 wrote to memory of 1804	1800	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	28
PID 1800 wrote to memory of 1804	1800	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1804

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\hasfj.exe

Filesize
32KB

MD5
b45226da4d880a05aff9e749a16f09a8

SHA1
e61c87275a9ebf5b1c91ca4e048276ac9747ae57

SHA256
6554c5871d653615716e498d5b727f8538377a52eda7500656994d8217b62a54

SHA512
b6082c52b83b4a75a642272d244065211879bb526896d06c88da4612567c74d2e23a137450d14c204c3bd568b03a554003d8b276228643c6108adbae71eba72f

Download Submit
memory/1800-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1800-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1800-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1800-9-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1800-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1804-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1804-24-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1804-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download