43befb4a072bdf9cdd93e6218d8d64ddc39e60adc408383d4cdc72f67e228f60

Analysis

max time kernel
140s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 02:34

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General

Target

2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe
Size

38KB
MD5

748bf2f427bc46491d520c673b3acfd5
SHA1

bf6ebcf17a9dc22aa75cd57ba508238d4289b0a7
SHA256

43befb4a072bdf9cdd93e6218d8d64ddc39e60adc408383d4cdc72f67e228f60
SHA512

7d4f9221dc8aec9ef60859c4172d426055363d7781b4bf0ca47335f68de93edec6dc05d2d801e82a3a78ddd36bd60f743b71cc7b5241ef91c8c426bd2bf87b62
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3Nby6UTb:bAvJCYOOvbRPDEgXrNekd7l94i3py/Tb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
4540	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 4892 wrote to memory of 4540	4892	2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe	89
PID 4892 wrote to memory of 4540	4892	2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe	89
PID 4892 wrote to memory of 4540	4892	2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_748bf2f427bc46491d520c673b3acfd5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- 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:4540

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\demka.exe

Filesize
38KB

MD5
be11d52df3b1695b94605124d72b6db8

SHA1
d30702c0af38f53d7b49a97aae6f4ef285134d14

SHA256
6bb71c06508c8059422f771e46f9316f50a63ec3a4af3fa4d0d0c313b6d8be17

SHA512
6e5601dce10c7a631cf843d7417e877c869bd26a46e955e8176c8704a3a1e91e99d553afba6049aca58094c5dfa198c4a99035a6435b5e457980a4cd233bd2ae

Download Submit
memory/4540-21-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4892-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4892-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download