a246b7552d606a36f7976779bc5efd43dae702a679cc2d028ff6a588a4cfd47e

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2024 12:48

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General

Target

2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe
Size

62KB
MD5

e1eab0ccc20bc410ada18889a6c07a79
SHA1

6d6ffe28eb3d595f646b47e767254e7c1fb9d412
SHA256

a246b7552d606a36f7976779bc5efd43dae702a679cc2d028ff6a588a4cfd47e
SHA512

e8f6a9d944741fe1eddab64c4de8d5f173c78f24f7a8c52935a070a7e2463b3bfeff034fb291d49500bf0b9ee76c8b73fed5de63f60df18b5a44aec2b5166694
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGr:aq7tdgI2MyzNORQtOflIwoHNV2XBFV76

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320c-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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
452	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 4604 wrote to memory of 452	4604	2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe	84
PID 4604 wrote to memory of 452	4604	2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe	84
PID 4604 wrote to memory of 452	4604	2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_e1eab0ccc20bc410ada18889a6c07a79_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- 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:452

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
62KB

MD5
e84e44589f07d860a9e56a14218ca820

SHA1
a4e99cccb5853a2646fa5ca31ccecd867d862a0f

SHA256
e62fc17c88ba5233d46b8d54dcd01f17c4cf3439975d61410ac0555334878621

SHA512
f9415ba42c398811fdc4fc08bacebe76746c2dad14080ae734500d5e93f16e79d3018c37f051bd606cd63a67e4e6385fd0e7bc7461b2d980836fd5cc3042d863

Download Submit
memory/452-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4604-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4604-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4604-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download