a9f4141fffadf8078b92ed00c97d0c5309d857260efc2195229fa73a8e440dfa

Analysis

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

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-05-2024 07:35

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General

Target

2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe
Size

42KB
MD5

85dfeaf969c3746c08e5691236cc3358
SHA1

f6d0cc77fd31ed503217eba15b866334bc588325
SHA256

a9f4141fffadf8078b92ed00c97d0c5309d857260efc2195229fa73a8e440dfa
SHA512

67033d36f65a605ffeb8b4bd3781f2d2aefe4f68f0613c56c90b6661e10e5f76f0e9b7299fdee0b4538a453aa11bbca906a72c2f991fff89d46748174db34232
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9x3F:bIDOw9a0Dwo3P1ojvUSD79RF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3860	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 1624 wrote to memory of 3860	1624	2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe	80
PID 1624 wrote to memory of 3860	1624	2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe	80
PID 1624 wrote to memory of 3860	1624	2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_85dfeaf969c3746c08e5691236cc3358_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3860

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
42KB

MD5
673bb373f70c09b26fc54de0f50035a0

SHA1
a68d1e43577c20f83776cfa5a4cb484015e84dba

SHA256
3787701397a9a92ce9ef061041bc27448ba67eabac0c2af52cc98ef8dd5501de

SHA512
e5be42ba4e7df40c1372066d2b7a7a3c7185d93bcf6215d694768a3ea9997de7b2371a48a48d13dc25e21a733aed623803fed374e4cf21b68b9cc1963f464de9

Download Submit
memory/1624-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1624-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1624-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3860-17-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3860-23-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download