50a851400f99faff2f55d364ce507e30613b5aff4f74dfc8cbcc0fa3e8b7d525

Analysis

max time kernel
132s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 00:44

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General

Target

2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe
Size

88KB
MD5

5d1cbb5ac5965778b3a351ba2de9e965
SHA1

2096ecfe37c4661574473e38f50dcb235aaa4209
SHA256

50a851400f99faff2f55d364ce507e30613b5aff4f74dfc8cbcc0fa3e8b7d525
SHA512

a612c9df2ab9bb9156b427c2342ca31e8128978ba293f348fa302070f2ffa4269166430ecaae4b2bbb82cb72f0cc56a17adc03b93de078573bbce7b45bb63e08
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7vM5RE:T6a+rdOOtEvwDpjNR

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2316	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012280-11.dat	upx
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2316-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2316-26-0x0000000000500000-0x0000000000510000-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	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2316	2848	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe	31
PID 2848 wrote to memory of 2316	2848	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe	31
PID 2848 wrote to memory of 2316	2848	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe	31
PID 2848 wrote to memory of 2316	2848	2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_5d1cbb5ac5965778b3a351ba2de9e965_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- 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:2316

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
88KB

MD5
25cb6f1077dfda453e8d3776eaa4c02c

SHA1
80d53b30e6e47431c7a05cd2fbe55e57ac38975e

SHA256
7448fee1f813f5f94f6c3bfe170d049bcc75591bb8901567a3571c4a49e66210

SHA512
97b2840480f42dffbd5ec9afaf12877c2072530205f034990b367a63b527f87dc87f2dd7edd25999f7ff2137e520db7cbaac900c8ae2f2d7b992e699dfe6fae9

Download Submit
memory/2316-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2316-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2316-25-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2316-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2848-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2848-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download