24a4173724331b1fbdf97a83a2ae5179742ebeb9b41d88c3175882b94bc6ac85

Analysis

max time kernel
138s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 08:43

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General

Target

2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe
Size

47KB
MD5

f8e3c2de4fcd735db89322eccc30cb2a
SHA1

5f6df22404ca1b48dc04a5b8f10651a28b06088e
SHA256

24a4173724331b1fbdf97a83a2ae5179742ebeb9b41d88c3175882b94bc6ac85
SHA512

dd2c57636d3ffe75d5d58f4ed52a2d57c309f6589009ca6d4905d8a24da1edc0779f0d3ff4dbbed46624ff0f047f0d86ce3adfa36c17a2320ba4044707eaa609
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxG:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001e2b4-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001e2b4-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1652	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 3368 wrote to memory of 1652	3368	2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe	89
PID 3368 wrote to memory of 1652	3368	2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe	89
PID 3368 wrote to memory of 1652	3368	2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_f8e3c2de4fcd735db89322eccc30cb2a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3368
- 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:1652

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
47KB

MD5
0c7ef1409974191141b0b93743317dc3

SHA1
0312998ed2ccff48b7bd9014d1d11fc98ef0c534

SHA256
55ce68910662a0ca4c7cd6a59efcebb7e5d30d01fb6e8b142034e644abccbd31

SHA512
fcca1748ce3dffbaa7571c8250a97f0be57caa91166de64573094ef2fbf42b99d205d694ca95ed3ff11ac60f9b2a181c3ca8c3904b08ff70f49fdd36757077c5

Download Submit
memory/1652-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3368-0-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/3368-1-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/3368-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download