721a14eee936b8f9374f1cc4df507079cfa69511e1a4a95415cb47185b9a7103

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13-06-2024 01:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe
Size

42KB
MD5

c77095129d1d77efca1c7c14b2860a31
SHA1

ee550c173145daba2edd743c5bf452c3d0016ebd
SHA256

721a14eee936b8f9374f1cc4df507079cfa69511e1a4a95415cb47185b9a7103
SHA512

e0dba8e40d7032ac595ab3fea1ea1b9c467d5192e7318be80d3afca1fc3cec15dbe74b70d4ee9bb8ea4ce4beb3649a60551c39c43b4f2a45d2f77ba1d5dfcf5d
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWWL:ba6YcA/Xk3wXFXSqAJk

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1784-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002336e-13.dat	CryptoLocker_rule2
behavioral2/memory/1784-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2412-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1784-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x000700000002336e-13.dat	UPX
behavioral2/memory/1784-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2412-26-0x0000000008000000-0x000000000800F000-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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2412	hasfj.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1784-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x000700000002336e-13.dat	upx
behavioral2/memory/1784-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2412-26-0x0000000008000000-0x000000000800F000-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 1784 wrote to memory of 2412	1784	2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe	81
PID 1784 wrote to memory of 2412	1784	2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe	81
PID 1784 wrote to memory of 2412	1784	2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c77095129d1d77efca1c7c14b2860a31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2412

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

Loading Replay Monitor...

Downloads

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

Filesize
42KB

MD5
2c862fd8eeaadb9813dccc66e0a29b7f

SHA1
c8c56f77efd65f4b78315b6d5d42ade879ef7a1e

SHA256
e6d042f39d92efbf95b5ee140b512ffa2590dc998241abfa8ca00a45a4b9f31b

SHA512
fd3a9071a5eebe0411cc10da6f6edc018ada7e284ff5526de331df081976052da7723609762809d907c17bcc42c3a386779312dadee50e874ba964ecb084b6f4

Download Submit
memory/1784-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1784-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1784-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1784-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1784-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2412-19-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2412-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2412-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download