b4bff1381c0e4823bf4feab6361912c96d72e7b969295be3a026ddeb8c50cbb3

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 14:37

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General

Target

2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe
Size

41KB
MD5

7557444da51109f280e227112ee1adca
SHA1

edfb186310ce6ec48f94d3639ba76797a5b96fd4
SHA256

b4bff1381c0e4823bf4feab6361912c96d72e7b969295be3a026ddeb8c50cbb3
SHA512

1d7317fdc5ee9c7a21e27c45cf8a7ae6f37dc6e043f26a9678baf54019debe319dc49d2a974bf477db2d8e22dbad9262c18d0f941e2207ac5b6a0f15338c25a1
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKi:bIDOw9a0Dwo3P1ojvUSDhE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000200000001f656-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	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 1472 wrote to memory of 2316	1472	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	91
PID 1472 wrote to memory of 2316	1472	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	91
PID 1472 wrote to memory of 2316	1472	2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_7557444da51109f280e227112ee1adca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1472
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2316

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
fcd803a0d1caf3ec03ab8dd1c262acc4

SHA1
a96448359ee0fc4d428025eadb7c92e1a0a061be

SHA256
1a8420497f2531f705acbefebc8876b04e48980b0e391e3d0bb716e76bcc9fd6

SHA512
e37f791b40a91ce188369ead5c96880b3b06533d12924b3f927ef75c4ba83893119dfa03d64b2f611188d3299101f49c0a7b19de4ff2a00087b8f620789f1473

Download Submit
memory/1472-0-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1472-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1472-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2316-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2316-19-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download