1e4e432b368979ed98ea64e6c49c593b6a226e6f9b9feec8506219318ac51e11

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 07:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe
Size

41KB
MD5

1a1337e42d86f96df1a425d5c7cca4e1
SHA1

d6e9c4ce9668806c2a8162bc2490759623a91142
SHA256

1e4e432b368979ed98ea64e6c49c593b6a226e6f9b9feec8506219318ac51e11
SHA512

1eba6bc0efae5ba51347bed8c593b7c3457b132111fc86058563d160752b0734b6d540c46d47f82bd1e8036fb0f15ca2daa0a7ef9da4db75ca8902c09e046ebb
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAn7g:bCDOw9aMDooc+vA7g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1048-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023288-13.dat	CryptoLocker_rule2
behavioral2/memory/1048-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2356-26-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	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 1048 wrote to memory of 2356	1048	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	83
PID 1048 wrote to memory of 2356	1048	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	83
PID 1048 wrote to memory of 2356	1048	2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2356

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

Loading Replay Monitor...

Downloads

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

Filesize
41KB

MD5
a9ce275c7612a7504d2e7bbd2cc5f36c

SHA1
047b7a94ead58f91ca6c159c44f02a863925f452

SHA256
52f0519747fde9aecb9a06254b5d62912548ff32df617d6954024b34ec74b059

SHA512
08d333568c7a64df9f9bc49e9fdb0138ad622a281996a8490cb5ceb78829b13d2f11318cbb057c8e9b32633fef81fe29a110f6f157c7fb61c913c20a9bdf0955

Download Submit
memory/1048-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1048-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1048-6-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1048-9-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1048-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2356-19-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/2356-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/2356-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download