8a5fe4c23b82e484826bf5a886fe2e85e5576dc77dd405e5b7499a1115d919ed

Analysis

max time kernel
132s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-10-2024 20:34

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General

Target

2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe
Size

56KB
MD5

5675d43390fefb7dc82721dad8fffc69
SHA1

82baf05002635d3f4e55d98b55e1592728281288
SHA256

8a5fe4c23b82e484826bf5a886fe2e85e5576dc77dd405e5b7499a1115d919ed
SHA512

0c44a1a88c37ec098eb95415916748d43f0d404e8d857f8b37056ab1d6e7815938cbcfc044e7fb542506de981e501a864ad320687588c4dff41c99105f4f4de1
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax848+hIM:z6QFElP6n+gKmddpMOtEvwDpj9aYaF

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2420	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2388	2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000700000001211a-11.dat	upx
behavioral1/memory/2388-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2420-25-0x0000000000500000-0x0000000000510000-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	2024-10-17_5675d43390fefb7dc82721dad8fffc69_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 2388 wrote to memory of 2420	2388	2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe	30
PID 2388 wrote to memory of 2420	2388	2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe	30
PID 2388 wrote to memory of 2420	2388	2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe	30
PID 2388 wrote to memory of 2420	2388	2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-17_5675d43390fefb7dc82721dad8fffc69_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- 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:2420

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
56KB

MD5
5bb983670e1f46eccb333b341a87d6f5

SHA1
af00517003367aff2a6702ce87252906230eb0a5

SHA256
97d7c8d44e84d8da5bfb5631c1f07ab371b98785a8895188daadf9dca0f5fe5d

SHA512
fe95b74283a759b5352db43d9cb05deca44b949a2b165c5a579bed0693f00e4479477f9e25c9e0cc12d4543624eff457aa4d247847b40c563b578c9e4e798572

Download Submit
memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2388-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2388-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2388-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2388-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2420-24-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2420-17-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2420-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download