58d8f670a5295ce2ba363b9e889d7f792ade96a76552f70c3ba1c368346c82ea

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 12:34

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General

Target

2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe
Size

48KB
MD5

91e4401d170b34ff460d8c104861ffe0
SHA1

e37eaea2c74e00ab3829cc2b4bd4ebe5fb4ba6a6
SHA256

58d8f670a5295ce2ba363b9e889d7f792ade96a76552f70c3ba1c368346c82ea
SHA512

5e04bdd6f202cd7f77c8cde3d9b7c32477a9b94d4178ad01f16c264ce826d231e51a6d684dbfebd2a1fef707042478f68d44c5fbf564838681d1742b819e22db
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwDFW4:79mqyNhQMOtEvwDpjBzck1W44

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/2864-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4492-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4492-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/2864-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4492-17-0x0000000000500000-0x000000000050F000-memory.dmp	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	asih.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 4492 wrote to memory of 2864	4492	2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe	82
PID 4492 wrote to memory of 2864	4492	2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe	82
PID 4492 wrote to memory of 2864	4492	2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_91e4401d170b34ff460d8c104861ffe0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2864

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\asih.exe

Filesize
48KB

MD5
e4ad374b26aae51f2ceac53b62fe570f

SHA1
c23eb720787a257402d5e41ee3572bb0256b66a8

SHA256
ac40671b71ea059fe4e682925771f4e9d91c9d9783fce87f9f5d79ee21259619

SHA512
93fc241984c2c298120871325781e4244b5e17d0176a9d313cf15e974cea883cdffbfc5e30fe4506e1e33c3e3c7bd036ef6c83a77fd77bda4cee47fede82fef9

Download Submit
memory/2864-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2864-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2864-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4492-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4492-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4492-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4492-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4492-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download