b367ec70af92b9473ca7a55c59d31d31558c6424f8f653d5cf32b32874d876d4

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 03:47

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General

Target

2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe
Size

96KB
MD5

f9fb68355eafac6165dfc8939087ceff
SHA1

c8fb73dd1029ec13c17c68de9caab72040724710
SHA256

b367ec70af92b9473ca7a55c59d31d31558c6424f8f653d5cf32b32874d876d4
SHA512

1347cf88927c06664b3156be19e7437f03eb65c355b3318cdf188a532618712ab595dee67451add1ea77fcc1633ef9387da97ab4ad14ba5552db77d9c0db1359
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+YK:AnBdOOtEvwDpj6zY

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2364	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023453-13.dat	upx
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2364-27-0x0000000000500000-0x000000000050F000-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	2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 2364	4900	2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe	82
PID 4900 wrote to memory of 2364	4900	2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe	82
PID 4900 wrote to memory of 2364	4900	2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_f9fb68355eafac6165dfc8939087ceff_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900
- 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:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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

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

Filesize
96KB

MD5
153a6cc5af8c049285c66887893afcd9

SHA1
fdf1cdd27b3bbed257f04d79609495c6a5d6376b

SHA256
169e00bf907190b29593d2d07306fefeeb91164b6f274a0edab4d2e58f6645fd

SHA512
1fee70fed79666faa26d33c65c431d8bc7d98790d8c5b4b1ea1ad76acc5af9b7b7fc1fe2b54e883d3ebc5e18670706e65ab246fe25306d5a51fa81443369797b

Download Submit
memory/2364-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2364-21-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/2364-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4900-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4900-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download