29dcbda7bd7b305a5365fcf7892357e43a377615106ed425e85218c5f5c51c15

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:30

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General

Target

2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe
Size

64KB
MD5

7109e89db73dd1bc428b9fca4d98e31f
SHA1

7857563f8079c5ddc1fdcdc1fa09425012de59d5
SHA256

29dcbda7bd7b305a5365fcf7892357e43a377615106ed425e85218c5f5c51c15
SHA512

0394de68bd2a7559fa1b980c6e3d7e8d1232c948c83b2ddab072d86775d88d6aea18789fb3bd5c21a4543a0da76b40c1e68c4568d6f4f9fa13e6e26c037237c6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA9J:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x000b000000012261-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x000b000000012261-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid	Process
2640	hurok.exe

Loads dropped DLL 1 IoCs

Processes:

2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe

pid	Process
1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_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

Processes:

2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exehurok.exe

pid	Process
1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe
2640	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe

description	pid	Process	procid_target
PID 1632 wrote to memory of 2640	1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe	23
PID 1632 wrote to memory of 2640	1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe	23
PID 1632 wrote to memory of 2640	1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe	23
PID 1632 wrote to memory of 2640	1632	2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe	23

C:\Users\Admin\AppData\Local\Temp\2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_7109e89db73dd1bc428b9fca4d98e31f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1632
- 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:2640

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
64KB

MD5
4263718aef54f76304e2080537abb362

SHA1
1aeafd53aaf124b503c3e7d1b4c2dd09ee8e2fa8

SHA256
c974e3fce0400c3e610fd39b042b7e3737b281f37ba84019ad8d6a01d10eb32b

SHA512
3146d2ded272c371429e0df7d796ea145ca8adf921fd8e6ea5cd0b78f196a4fac23f40a338eb947d3b9602de2ee07097558e8f882efad2a297c53e2665d38d9d

Download Submit
memory/1632-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1632-2-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1632-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2640-22-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download