b57e950ca5e8aab1b41f30e8f8d475490a23df4ebf48b8e5e86babed067fc5b0

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13/10/2024, 05:43

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General

Target

2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe
Size

60KB
MD5

04ef2cfbea45e5c7142d427899d080ef
SHA1

ce0dab52080c33c37e49b98b82af66dfca2f538d
SHA256

b57e950ca5e8aab1b41f30e8f8d475490a23df4ebf48b8e5e86babed067fc5b0
SHA512

9dca3270a521dc56893d6e6731acf29c7a15d13cd3dc505744407d759d872a172a29713fb38fe3f387e1246b97711c38c56b8d604cd974037baff213078a5530
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+Nx:z6QFElP6n+gKmddpMOtEvwDpj9aYa6

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2532	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2376	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2376-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012102-11.dat	upx
behavioral1/memory/2532-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2376-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2532-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2532	2376	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe	30
PID 2376 wrote to memory of 2532	2376	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe	30
PID 2376 wrote to memory of 2532	2376	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe	30
PID 2376 wrote to memory of 2532	2376	2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_04ef2cfbea45e5c7142d427899d080ef_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
60KB

MD5
b2e6a15abe045e97465a7fdaa9b55784

SHA1
e0b58cc26db3e428b2eeeebe70f78e425c6ff63e

SHA256
644bbef7bd781459c33d4aef2d7fa7fae265fa5e5dbc5e22b50638170848484b

SHA512
dac43b9c1d83dcfa17e243f1723aa9fccc79b2156b939aad1752ad45d81544e6471d248a1a0626789b47f9399005798ca116a4185d4a0632ddedf54370df77e0

Download Submit
memory/2376-0-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2376-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2376-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2376-9-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2376-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2532-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2532-18-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2532-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download