59b936fd3c64ebd609f261660cc7e6b986abf1d30b3d8c0a5967fe3d311f1fdf

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05-06-2024 00:24

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General

Target

2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe
Size

64KB
MD5

1b47784ded20743ae77298381c37bc75
SHA1

60c2d3007f180e70eab2d9efebe2cc79bb25d00f
SHA256

59b936fd3c64ebd609f261660cc7e6b986abf1d30b3d8c0a5967fe3d311f1fdf
SHA512

4a5b6dcebde6bd1579644e7709ab149746a82bfc2d00a5ea56cce8527829ece13e28189a645b28eca6e554780b62cd67a3ecb73e584c9c9faf59acc60bf80db3
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYMWRr:1nK6a+qdOOtEvwDpji

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2080-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/3208-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3208-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2080-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_set1
behavioral2/memory/3208-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3208-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2080-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x0006000000023298-13.dat	UPX
behavioral2/memory/3208-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3208-26-0x0000000000500000-0x000000000050F311-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3208	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2080-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0006000000023298-13.dat	upx
behavioral2/memory/3208-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3208-26-0x0000000000500000-0x000000000050F311-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 2080 wrote to memory of 3208	2080	2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe	82
PID 2080 wrote to memory of 3208	2080	2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe	82
PID 2080 wrote to memory of 3208	2080	2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_1b47784ded20743ae77298381c37bc75_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3208

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\asih.exe

Filesize
64KB

MD5
6c30ac3096cb4f5655ec91909056ff50

SHA1
35d424309131749e0c1f65de2cd1cbeecca5db33

SHA256
c2f4ab3901e801d67593dd4d56891d1b4917322a87474577c8d7c196c9ed5386

SHA512
0148d725eb5c25f770384cfc43340ca0425e2e20cbf1ab84ce32ee6b58fd711e4bafab1c6c51f4f124c923e1a8d38775281e52dcac6598466475b86899809b7c

Download Submit
memory/2080-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2080-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2080-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2080-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3208-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3208-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download