38a3c03a8241a4d9f5212475c89801dc6c23521b760aaee5e10c6badd8375a79

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2024 23:34

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General

Target

2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe
Size

37KB
MD5

f7acd4f1e27d643c0a6d1087f268afa4
SHA1

b810acf863d5161167cc626e5712cabc6d62c31d
SHA256

38a3c03a8241a4d9f5212475c89801dc6c23521b760aaee5e10c6badd8375a79
SHA512

1fe87f1aa837f11dfa2c8a86147e90e284db12073d448b608e562339161595db9c50b57e98f7261eb275a62848f4891ef15f8d6bdf5fa54a5c54de7bd98ac143
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbF04b:bAvJCYOOvbRPDEgXrNekd7l94i3pF04b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002324c-12.dat	CryptoLocker_rule2

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
4124	demka.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 3744 wrote to memory of 4124	3744	2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe	84
PID 3744 wrote to memory of 4124	3744	2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe	84
PID 3744 wrote to memory of 4124	3744	2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_f7acd4f1e27d643c0a6d1087f268afa4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3744
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4124

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\demka.exe

Filesize
37KB

MD5
4607ce4f28a816a4b3cf16db845750fc

SHA1
568386a20ee96f6feb1c067a99e12ce6fbefb3e3

SHA256
40017a40b42569d01cb726173b1f6e817ae0551d55cd0104f84af0f3dfb592c3

SHA512
1db2583ac451fa91be3b83f938e0644b77ff5d60028942f87daa0c5d899f3267efb353114baf1f48f7f39a02e9e143a69def4261d52b5c928c490f5b5a090ca0

Download Submit
memory/3744-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3744-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3744-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4124-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download