2a01dd83c8ffbdce5c38ef434944c532bf02a8e79c3b0e49eff38a5121990693

Analysis

max time kernel
89s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 05:36

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General

Target

2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe
Size

62KB
MD5

c53b41a6c7285cdfa9e38aa5b803ee18
SHA1

f757ba719ff408c8fe70fb4eadd37a483f157ea1
SHA256

2a01dd83c8ffbdce5c38ef434944c532bf02a8e79c3b0e49eff38a5121990693
SHA512

a7fdcdc7f299e4288c8ef61183681b9dce15bf3233387992f06a67cd08b940fa6bf9d1a2f3b69b1dfa948c0ae9c7af575467b38a3d64647a874d53135e4a05c1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScMo:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023174-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023174-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3820	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 1868 wrote to memory of 3820	1868	2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe	88
PID 1868 wrote to memory of 3820	1868	2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe	88
PID 1868 wrote to memory of 3820	1868	2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_c53b41a6c7285cdfa9e38aa5b803ee18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1868
- 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:3820

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
7d75a6704455940017e0d6fd1a0a0b51

SHA1
deb9d0f5c67d452ab8c8be850b627d61da206a5d

SHA256
b682ea689f51aa25b1dbe19cecb683aaf523783cc5dfa0ac558967e19a9fbf76

SHA512
b5e36c555d8d91909ed008da633e32c9eb7724cd61b808e39854d569ee60b6e06ae504ac5cd3e46eef88e881d3be703a43c8186e075c4cfc72fe0c753e5c9b1c

Download Submit
memory/1868-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1868-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1868-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3820-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download