bbb0c330856ad9344d6b90210dfaad83c9f39e29833671fbea6fc162245a6f72

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 23:04

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General

Target

2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe
Size

41KB
MD5

579a7aa96d124f6551f723a1dd15ed6a
SHA1

26f174bd6a2a15adf5f1523973ca4235e68e0b4a
SHA256

bbb0c330856ad9344d6b90210dfaad83c9f39e29833671fbea6fc162245a6f72
SHA512

272559a4ed52c405a58a01ebd861a0f97be3bba3ffc2bfa805a1908c1d78962afb4c4545029ea45b30d5e17599fe4f2ff7365782f0f44ced0bb1edca4dffde37
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAX:bCDOw9aMDooc+vAX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/352-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/352-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/952-26-0x0000000008000000-0x000000000800A000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
952	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 352 wrote to memory of 952	352	2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe	82
PID 352 wrote to memory of 952	352	2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe	82
PID 352 wrote to memory of 952	352	2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_579a7aa96d124f6551f723a1dd15ed6a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:352
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:952

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
d7eaab17d51f8193e26e3d9ae19916c9

SHA1
c3faabb1c8cfa204ed47643df66ef6554aede4a0

SHA256
9c205dcf63784ee74b558b273d4911984e3b3c305484d1127f894ad41bea5fff

SHA512
b95277bc19a719cad234729ec7644b8f0d866027c5142f7e6919fa3f1757b53965ec0807c3f7e8cc11c78571e120d0538d5c2394f256a8b15c8d37ecb754fe1d

Download Submit
memory/352-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/352-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/352-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/352-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/352-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/952-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/952-25-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/952-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download