f1eeab66d19d2d86f1c77d0e3241e0b1cc33e56bbd1cd5329977afa29438b280

Analysis

max time kernel
150s
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
04/04/2024, 20:36

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General

Target

2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe
Size

46KB
MD5

c0f83c6f6cbd08dc58dfa9f799545869
SHA1

90d18811f689256a86acc1fd99315093d7c5a78f
SHA256

f1eeab66d19d2d86f1c77d0e3241e0b1cc33e56bbd1cd5329977afa29438b280
SHA512

79e1354f6f589102d0f49e97777a307211d73f56335f12e0c2e10465ea0c253b9149f0e3586f6beed4805758b18b00d6050619f42573b11a6dd1bda9687a3c43
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuDLlDC:bIDOw9a0Dwo3P1ojvUSD4PInyDC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023209-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4716	lossy.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 1512 wrote to memory of 4716	1512	2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe	86
PID 1512 wrote to memory of 4716	1512	2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe	86
PID 1512 wrote to memory of 4716	1512	2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_c0f83c6f6cbd08dc58dfa9f799545869_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4716

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\lossy.exe

Filesize
46KB

MD5
d4ede84f1be196b8b5bb66e1afbc5bac

SHA1
d736ee6750a9b9dfea3518fc6d7d3026fc44709a

SHA256
d65f3a10e337626521f48da6c9caefebc38a8bc53605552302d4c29da610be21

SHA512
75ff1bf410bad00ad2acaff95eedf055d4751882ad6213f160ba9a2764f1fbdbe835da004e8fadbc6b3c30ba8d6572b6d8f2af1e37d47bbdf8ca9004e3c4967e

Download Submit
memory/1512-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1512-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1512-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4716-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4716-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download