8750d5628c3a6c9e6a03e18ff57e849120d4229922dff90a027a2ed69dca5d3c

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 04:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe
Size

94KB
MD5

d3d8a1cf4b82b52f4dda2f643aa0eee3
SHA1

af1d7cad6e05290fe107a15502f15b3e4fa6a32f
SHA256

8750d5628c3a6c9e6a03e18ff57e849120d4229922dff90a027a2ed69dca5d3c
SHA512

5860d5a3e0434208699848b9bc634c0dc2d6b88008c6de252255434dc228faad646a8b10aa8cfc46cf5b0dd2631911bbb8e83ecc73d1bc497bfb6072b53467c4
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+oy:AnBdOOtEvwDpj6zBy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000232a4-13.dat	CryptoLocker_rule2
behavioral2/memory/2988-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1516-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2988-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000232a4-13.dat	CryptoLocker_set1
behavioral2/memory/2988-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1516-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2988-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x00070000000232a4-13.dat	UPX
behavioral2/memory/2988-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1516-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2988-28-0x0000000000500000-0x000000000050F000-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00070000000232a4-13.dat	upx
behavioral2/memory/2988-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1516-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2988-28-0x0000000000500000-0x000000000050F000-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 1516 wrote to memory of 2988	1516	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	82
PID 1516 wrote to memory of 2988	1516	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	82
PID 1516 wrote to memory of 2988	1516	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2988

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\asih.exe

Filesize
94KB

MD5
6cb8c8000f389d4f2c73a728ad9da349

SHA1
f18e874bb26d28187a936dfdce200384c1128d28

SHA256
c93f21d8fcc20da34280f5413a2a7921459bbf16f109f094ed32bf6813bffacc

SHA512
6c6202c271813e32d979cab0377a8efc045900bc957b215be5ace1f0e1f5a54516ceb9c89fc984bfa67342da29d8e660277e1bc00a18baf0e55ee66eff68697b

Download Submit
memory/1516-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1516-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1516-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1516-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2988-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2988-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2988-22-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2988-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download