5309422efebe192238d0872cfbb1a65f734788cb2615acee79a4230e8b242a55

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 09:24

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General

Target

2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
Size

34KB
MD5

0a4679fa56a9484f8ae29b2bb56b9522
SHA1

1eab16a0e075a935e771fdec80a7d5352cf97ff4
SHA256

5309422efebe192238d0872cfbb1a65f734788cb2615acee79a4230e8b242a55
SHA512

29f224e2badfaab452ac89c29c8007e98348e890447be8c3d71de4e8814cc588b1852ec7c0a6d4564a2974001cea59f5b7ffbf82c4d0146e4c1cbb6dde87a116
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmy:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001223a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001223a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2724	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
2724	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 2724	1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	28
PID 1808 wrote to memory of 2724	1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	28
PID 1808 wrote to memory of 2724	1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	28
PID 1808 wrote to memory of 2724	1808	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2724

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\hurok.exe

Filesize
35KB

MD5
a7d98c728587ebed334b9c4121e61968

SHA1
562827ffce943dfc0409206e835182e298a13844

SHA256
4ef0ddf8183ccb1defee2b28a4a1d62ae6665671a2c383ad48946a0567af5beb

SHA512
733c1c2efbcb488a36898381935cd2209cbd4d527f2e4c1b22ba8f3a88ce30c5e1ba3902fa5cdeed29b4b17632a7b17f2413c258beb78c026e4a3e58a5225042

Download Submit
memory/1808-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1808-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1808-7-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2724-18-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download