ec6e866e8cdf21aae1ce836986bbb69779779534ce79475f67ff16cafc589b6a

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 23:24

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General

Target

2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe
Size

56KB
MD5

acf0afc80d4b67758458cb4f5eb7b129
SHA1

d6beaa1b1981ffff1edc0624b21eafa5dee9647c
SHA256

ec6e866e8cdf21aae1ce836986bbb69779779534ce79475f67ff16cafc589b6a
SHA512

12598e0531237b9f8c60128afecffec01128e287afa01132b7a258d055880ade5f53be8505ff21346a2a35552a482cb6fcc89a97c911f104a3917ad3cf523bd3
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbW:zj+soPSMOtEvwDpj4yzbW

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320f-13.dat	CryptoLocker_rule2
behavioral2/memory/2460-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2056-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2460-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320f-13.dat	CryptoLocker_set1
behavioral2/memory/2460-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2056-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2460-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002320f-13.dat	UPX
behavioral2/memory/2460-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2056-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2460-55-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 2 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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2460	misid.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000700000002320f-13.dat	upx
behavioral2/memory/2460-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2056-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2460-55-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2056 wrote to memory of 2460	2056	2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe	87
PID 2056 wrote to memory of 2460	2056	2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe	87
PID 2056 wrote to memory of 2460	2056	2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_acf0afc80d4b67758458cb4f5eb7b129_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2460

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
56KB

MD5
55f63ac64eba924521f0baaf8b460803

SHA1
52e1ed1b709cb28f2ed8eca1621f06a28b692541

SHA256
69d40967fe1b94b1732896589c2a3dcf7b33fac821c146c6428f546e9f548773

SHA512
d4948ecc3990741036a33a9b310d4afc961240391a5e644d5777d6dc19bbdb37cbd80aeb60ed09adbeb77745f90becd29bbe85a865ca2465c2c83aa2b9ce0b10

Download Submit
memory/2056-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2056-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2056-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2056-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2056-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2460-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2460-22-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2460-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2460-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download