47e12d5fbb2d60a8ab07a84bf8c4c7bd0b697a6c08b1cdb0bceb8252da6266c0

Analysis

max time kernel
153s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 22:25

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General

Target

2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe
Size

45KB
MD5

63bd241c1e8975730b522bca97516492
SHA1

e2f4a33fa46657ae11d867032c3964d0c7d4e0a7
SHA256

47e12d5fbb2d60a8ab07a84bf8c4c7bd0b697a6c08b1cdb0bceb8252da6266c0
SHA512

2f1f8603411dad9012b2697b462560162088d2f8b93fbb3e2f5fc4d990234c4df38229ee53df404fc78a3b2e4b91e82794c07854b1b7c95518b163035c44d798
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoW:qmbhXDmjr5MOtEvwDpj5cDtKkQZQU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1676-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023200-13.dat	CryptoLocker_rule2
behavioral2/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1676-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023200-13.dat	UPX
behavioral2/memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2372-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2372	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 1676 wrote to memory of 2372	1676	2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe	86
PID 1676 wrote to memory of 2372	1676	2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe	86
PID 1676 wrote to memory of 2372	1676	2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_63bd241c1e8975730b522bca97516492_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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
45KB

MD5
11ecc0c42a917f6a4ab63ba0ece871ab

SHA1
153d52bd084572c2e393a45c166263d86011a801

SHA256
a776ea41fbe7c65b832b8d8cc7579a9325fabf722cf4d98b9835f164357da37a

SHA512
afb90fc630b48e0c5a1d519540d9739d14774bab34945d51e5e256980520465039034221027f1c409e21d447598e7975b052133507d3ab59fb7b6fe6d5c0b3cd

Download Submit
memory/1676-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1676-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1676-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1676-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1676-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2372-19-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/2372-25-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/2372-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download