83f3fcb9920f371049d24562b3f3a9937a4823246107bcf9458e7dd569f6abe3

Analysis

max time kernel
140s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-10-2024 20:44

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General

Target

2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe
Size

91KB
MD5

a7619faff3b89188c0d5900377920723
SHA1

3c5e9ab72874d2f00dc572520a671a8346da118e
SHA256

83f3fcb9920f371049d24562b3f3a9937a4823246107bcf9458e7dd569f6abe3
SHA512

4d43c53ed46ba46a892333d7003d6086d62faa1383f050028afe197b861207750293fc30601092ab657f7cbde87bc0646afd7cb2cdfeeff7a1e172a23d404bea
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0J:AnBdOOtEvwDpj6zx

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2356	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-11.dat	upx
behavioral1/memory/2356-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1984-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2356-26-0x0000000000500000-0x000000000050F000-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	2024-10-17_a7619faff3b89188c0d5900377920723_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 1984 wrote to memory of 2356	1984	2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe	30
PID 1984 wrote to memory of 2356	1984	2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe	30
PID 1984 wrote to memory of 2356	1984	2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe	30
PID 1984 wrote to memory of 2356	1984	2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-17_a7619faff3b89188c0d5900377920723_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984
- 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:2356

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
91KB

MD5
7709cf7051bd2767507c23d4371af403

SHA1
2f0b59e4319061cc05b84d09461fb21a07d14b73

SHA256
6551bef79f31f786d8ea4260a023600c63cac8b04458926023fd903b0072d3dd

SHA512
debb5cbe56d0a876a8cdc4dd9bd9b46743ece2943c90a1e50a645371f61dceaf51b4ce55cc774c869dd075e5fae5eb8d4490c15cff3cb7fbaf2bd3af3688e73a

Download Submit
memory/1984-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1984-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1984-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1984-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2356-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2356-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2356-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download