f3d846058b17076b8c614c976b49b9c31e49e72fe85c0255e18a97f06d5e7f49

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 23:46

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General

Target

2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe
Size

41KB
MD5

2513059c6694b786b4b860ce3f299428
SHA1

d6ffa22fc6b8d7ce181bc11f2e36c249be34118b
SHA256

f3d846058b17076b8c614c976b49b9c31e49e72fe85c0255e18a97f06d5e7f49
SHA512

c660e2558221ff724248d882211813e32b3c6534532811e8da1f9cd2150ca3052f01ef59559827770c9a5de63e96760cdaf7a48a78e742326b4a76169d773934
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDN8:qDdFJy3QMOtEvwDpjjWMl7TdV8

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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2588	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3720-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233fa-13.dat	upx
behavioral2/memory/3720-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2588-27-0x0000000000500000-0x0000000000510000-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	2024-07-26_2513059c6694b786b4b860ce3f299428_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 3720 wrote to memory of 2588	3720	2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe	84
PID 3720 wrote to memory of 2588	3720	2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe	84
PID 3720 wrote to memory of 2588	3720	2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-26_2513059c6694b786b4b860ce3f299428_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3720
- 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:2588

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
41KB

MD5
f6529f7beaa8bdcdc9aa5cd7317d9805

SHA1
67c2f403fac747f91db960720114b699e30bb4d2

SHA256
c4e78f4741c250f2d2326f75c2cb8c19cc50d54d7b77559788953f0b696e1b83

SHA512
f38eab5b44e8feb8b7de33d8d89e46690526a334f2467bd527d08f197700202a5086bb0c6de7a869f8cff68db53edf95cf0c96e04ab7217e093aee2781826d72

Download Submit
memory/2588-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2588-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2588-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3720-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3720-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3720-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3720-3-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3720-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download