f546453a6cdefb6ccda27784f2db0599952cad788ac0b4f626b3b6aeed4c5bcc

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 03:58

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General

Target

2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe
Size

40KB
MD5

6614aef04d4d8a0497ed94ce3515d1f1
SHA1

aaefb736b6b94b2e035b32342f91c7418debcb4e
SHA256

f546453a6cdefb6ccda27784f2db0599952cad788ac0b4f626b3b6aeed4c5bcc
SHA512

139892d8df7fb08d7921234f015e6b84f06d56ff021697aa2b6211bba3ec9d0cc0b0e1d3147385369cde65412b3e7083d3472a10f7d48561ee28b41579c1fa9b
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xgy3:bIDOw9a0Dwo3P1ojvUSD79yy3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023b87-12.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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2112	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 4276 wrote to memory of 2112	4276	2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe	83
PID 4276 wrote to memory of 2112	4276	2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe	83
PID 4276 wrote to memory of 2112	4276	2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_6614aef04d4d8a0497ed94ce3515d1f1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2112

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
41KB

MD5
55dc6220a7b2711eb4e1f35185f6f1ae

SHA1
e0a1e4dea4f15590597ba7fcfc607a4df64116e0

SHA256
30631cccc58db281ca673a2dc82aaf95d7b81eda6cd9cc0b05a025973f72b00e

SHA512
1f477dff02d12c15e3236844f5a3a52ecafc9f6c3e5f943148df69302f34228297dee23bc1ebc6aecd877077da01e1f6c5cbbc930ecdc75e79a0abbda29139ae

Download Submit
memory/2112-17-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2112-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4276-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4276-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4276-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download