ff1ca923a93159c532f748c0bb12d2398c359b40548808d076b1df418d1bd3b8

Analysis

max time kernel
93s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 17:37

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General

Target

2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
Size

35KB
MD5

60070d1a5c133d9ea44acb1a00e11f7d
SHA1

90a8bea97332c50e85a818d288863b23a614ec20
SHA256

ff1ca923a93159c532f748c0bb12d2398c359b40548808d076b1df418d1bd3b8
SHA512

cd9d27850ae9fdb98536db578535115b8abd9efd910128b20198f89c66dbb36975893edc28399de392f06c8a8a6034718bd7c2b89ede282f889c9d12bfe6427b
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0I:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023206-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023206-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	hurok.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 2340	4444	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	85
PID 4444 wrote to memory of 2340	4444	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	85
PID 4444 wrote to memory of 2340	4444	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
35KB

MD5
f34f83f1abe0df7a5643a8e8e578cea7

SHA1
f810cb398afb6d208fdcbde8f872014d7315ab66

SHA256
85c1b8581bf4365ed8fc30cd55ac61f431321cd00c7103b11cbc83ae0b97c439

SHA512
d8ca2463b9ced93596b9e665cdadecf7feb16e1ec15a1c14b1e1f2ef34670502c7346ea940a92fe03474524c84d548a01e051731c37e23c68920203c1b1caf1d

Download Submit
memory/2340-21-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/4444-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4444-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4444-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download