8c39ba48a56353f76213b3bc2c19b52d7b713e42708426f021d14a33ca16f3b1

Analysis

max time kernel
140s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-10-2024 23:22

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General

Target

2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe
Size

38KB
MD5

38fef131cf956e80aafcd471fac259c4
SHA1

9f31bcb18f3fe72e2ae87576d86a4bc82e365d91
SHA256

8c39ba48a56353f76213b3bc2c19b52d7b713e42708426f021d14a33ca16f3b1
SHA512

12f3c869fff8f478d6e20542e6d64c4344679cf915454a1d854fc9181bd283481a46af46c31540cfd7e71593211083391bbe1b6303bc869b107f96703a893e85
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITf:qDdFJy3QMOtEvwDpjjWMl7Tf

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2400	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2516	2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012119-11.dat	upx
behavioral1/memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2516-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2400-27-0x0000000000500000-0x0000000000510000-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_38fef131cf956e80aafcd471fac259c4_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 2516 wrote to memory of 2400	2516	2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe	30
PID 2516 wrote to memory of 2400	2516	2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe	30
PID 2516 wrote to memory of 2400	2516	2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe	30
PID 2516 wrote to memory of 2400	2516	2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-04_38fef131cf956e80aafcd471fac259c4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- 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:2400

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
38KB

MD5
3201fc15d78b11dbc93cad499938949f

SHA1
9297abcc45b65362692d365da2c9b27a662d8745

SHA256
6075d18e629facba4e80cf956c5a43c7f97440ee40d918c978902e73465f7da5

SHA512
d8746f6c35688c50b0bbb15bd1ba7244a24c2b564206069246417b376c82308a70089a9f3d2bd2b610fa062a8bde8cf27592541522c41dcc55fbab6acc12a2b4

Download Submit
memory/2400-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2400-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2400-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2516-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2516-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2516-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2516-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download