2ed2007649f8d866a40df12642d7daaab5328770c0f14e5399130c9bf2a885db

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
04/10/2024, 18:01

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General

Target

2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe
Size

39KB
MD5

537388688f026d9a5299d3381c832b5f
SHA1

3022c6c23150afcc587fcb4eb45e4a8c78608da6
SHA256

2ed2007649f8d866a40df12642d7daaab5328770c0f14e5399130c9bf2a885db
SHA512

a3c59d2b36b27203b16f520dd2360d071ed91452e962accb12ec9357d09de2d371f440d42216c0b706b0e61723c50bc2c59f9de125a0ae5c961b2c53e6319638
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT3:qDdFJy3QMOtEvwDpjjWMl7T3

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2384	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2548	2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2548-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000700000001211b-11.dat	upx
behavioral1/memory/2548-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2384-27-0x0000000000500000-0x0000000000510000-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	2024-10-04_537388688f026d9a5299d3381c832b5f_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 2548 wrote to memory of 2384	2548	2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe	30
PID 2548 wrote to memory of 2384	2548	2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe	30
PID 2548 wrote to memory of 2384	2548	2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe	30
PID 2548 wrote to memory of 2384	2548	2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_537388688f026d9a5299d3381c832b5f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- 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:2384

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

Replay Monitor

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Downloads

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

Filesize
39KB

MD5
ab3d6a4f75cc7a4d58fad1eb1470c711

SHA1
754916b19614e7bd0d3f98040a5b11bbf16c8484

SHA256
552de69e8d7294cc2e1c26d9baf9d47b00e2326e7bd258c4637adeecf51174ef

SHA512
eb0c2ffd613ec2bba1418e5c64b36e920dc131a20fb1d9126e7b0ada47a3e7f79f4a1074ff5096450cca2df2974a3b72c308295a7d01e0c3f0a3404842ce851a

Download Submit
memory/2384-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2384-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2384-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2548-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2548-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2548-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2548-14-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/2548-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download