a8357a09d9db3d6a764eeab79ab2600e1dfa77e306a61c9efdf17e478b2b8438

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 06:23

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General

Target

2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe
Size

59KB
MD5

6797e138c2e6913c7deb59226c980cb5
SHA1

532aab2a58c05fc7f48e96fa3c10bc1bd7bc0e25
SHA256

a8357a09d9db3d6a764eeab79ab2600e1dfa77e306a61c9efdf17e478b2b8438
SHA512

7699ad429448ad08f2cd218a7a21f54219fe2deb091ace8845c7be152911eb352c859afc380da1bd55f6444c81e36cf7c7be2d9fd40cfa25f007eeee3fa4e85b
SSDEEP

768:f6LsoEEeegiZPvEhHSG+gz5NQXtckstOOtEvwDpj/WaD3TUogs/VXpAPWq:f6QFElP6n+g9u9cvMOtEvwDpjnpVXzq

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1920	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2112-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001226d-11.dat	upx
behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1920-25-0x0000000000500000-0x0000000000510000-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	2024-09-08_6797e138c2e6913c7deb59226c980cb5_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 2112 wrote to memory of 1920	2112	2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe	30
PID 2112 wrote to memory of 1920	2112	2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-08_6797e138c2e6913c7deb59226c980cb5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- 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:1920

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
59KB

MD5
a24152871a46c2de4a73dc11273391e8

SHA1
7d3f8060ad358e31dd61c54e2a2108665e6169cc

SHA256
24aef5fc1dda0631334fb03545826745c930d62fd4403007143b0cd2cd2e986f

SHA512
142b4eadbf4d93ca97409634e904b89c65412db6a10ffde7c13c96b4cea9ac463c2cc750270f9ce455c043ad4435084df8f0578818c186f31ea0a068167b9479

Download Submit
memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1920-17-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1920-24-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1920-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2112-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2112-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download