3919b5706f121214976e81c2663c03979cc40ea251cf924ead2fce62b2477101

Analysis

max time kernel
161s
max time network
167s
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, 14:32

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General

Target

2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe
Size

63KB
MD5

49b936c7ecfbf89bd13529de04aca3f6
SHA1

13e1b033f810c4c64145781a764e07946749b215
SHA256

3919b5706f121214976e81c2663c03979cc40ea251cf924ead2fce62b2477101
SHA512

0a433b6cb4942b7129570f948f22c5565ed99471cc2af92feec9b17b0f79e751baaeb96a68578645ac46cacfb7097a07b51f019d98890cd20c4f8b8d05c5cef0
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB1J:vj+jsMQMOtEvwDpj5Hy7B3gG8xzUQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322b-12.dat	CryptoLocker_set1

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
492	misid.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 3796 wrote to memory of 492	3796	2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe	91
PID 3796 wrote to memory of 492	3796	2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe	91
PID 3796 wrote to memory of 492	3796	2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_49b936c7ecfbf89bd13529de04aca3f6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:492

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\misid.exe

Filesize
63KB

MD5
faa59f286d448c5e7576b74f681e7af4

SHA1
913b53a5326f5791682750373aa226a6013be62f

SHA256
c5086fe4b0cd1fa225ddc6d7a1c33f77dfe3c73e0ad22b9b8e873b8ccc995a2b

SHA512
8b5f759fad3a4fdb7ce79000756e19b0f73f4980e93bd9e16e2c2ef713d67b482261b04a6ebcee8fc5c74bdda2c39cca4a9044d9e9f38739b6b569a6fe8c9bea

Download Submit
memory/492-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/492-23-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3796-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3796-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3796-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download