dc81ee23b98216fd2089b0f38979d5d11fa722d465007435ded168deda04b99a

Analysis

max time kernel
93s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 16:56

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General

Target

2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
Size

45KB
MD5

fc1c7b72b349c8002324bf748075de71
SHA1

0f30e279cf4fdf67b6163be3a400ecabfb9178ec
SHA256

dc81ee23b98216fd2089b0f38979d5d11fa722d465007435ded168deda04b99a
SHA512

c1893ae8a14272dd519147a3c45a5978461a66287fc5d0f7ad9354d87342a8fd789c993e7a3c7b75f4edf5deede3268a39cdefef5d3bd2af89ea71e6dd8be446
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxA:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3896	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 220 wrote to memory of 3896	220	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	89
PID 220 wrote to memory of 3896	220	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	89
PID 220 wrote to memory of 3896	220	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:220
- 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:3896

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
45KB

MD5
6b0d8b4e1f7d01a4f1ef691ad67b38d9

SHA1
d301954569390c55e2078451aae47d9d8ca097ad

SHA256
f476062d6696fa0aca36d9a2aef758a9f4c269fb1da6ef27729231099cba1c89

SHA512
ccd3838a03e4874254ebf0b10efd9fdc8f66b2e937cb42da5aa41eeb717c9c022a714a2b439ac7a03472711c293dc3d093a59a3d0d05105b0c25ac34ccc9856f

Download Submit
memory/220-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/220-1-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/220-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3896-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download