f7189d97711540b3cf1b72f81abe439554859ec15ea6fb2f73e8420d96d5a1d4

Analysis

max time kernel
142s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 05:39

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General

Target

2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe
Size

53KB
MD5

849978f8fde66e2f9e3d689534beb3a3
SHA1

8accc771dc1ca6af13f5bb46547aac6ba476a47f
SHA256

f7189d97711540b3cf1b72f81abe439554859ec15ea6fb2f73e8420d96d5a1d4
SHA512

cce3cf09665821125d2958ab617bb5f3dcf8511f3b38db1d22137cedf6c074a140bef6524647f325f062a4fce522630cd6342a1fadcefc969b11d1a6a57cd2bf
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxc:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233c0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233c0-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4420	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 4160 wrote to memory of 4420	4160	2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe	83
PID 4160 wrote to memory of 4420	4160	2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe	83
PID 4160 wrote to memory of 4420	4160	2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_849978f8fde66e2f9e3d689534beb3a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4160
- 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:4420

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
53KB

MD5
c5cfc434212aa8364391951213b69ed0

SHA1
9f775174a44ddfcf443f733bcd6975e34e9aa66f

SHA256
b03ac4bd397d0dfa48190c11cca6390fac62d78b419c35724314d11572e4461b

SHA512
61e8dcf5f449969f6cd47bb263f57cea83e53606b5b85b373a13043ac8761c486dc7f50c780b5207ae8500b6c1869c7bea9e460865516b67acdeb8f09d947d59

Download Submit
memory/4160-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4160-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4160-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4420-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download