aebff2e3a0c1da5f0ab9e08b973a51c237345c7b289c51d91340aa1ef0bef5e4

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 10:22

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General

Target

2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe
Size

67KB
MD5

3170f811bdf996cbb397f1717ed1ade9
SHA1

d5943ad8f2a51ff8f6a7dece16d4b5a5af29907a
SHA256

aebff2e3a0c1da5f0ab9e08b973a51c237345c7b289c51d91340aa1ef0bef5e4
SHA512

7fb4e814923521d9ae8f8c71d019e1f8025ad8c35f8c09ce96a8e899d3c8ec37600485e0681f10149afb4098955c5b247ffc33ea163fc79d03bcc6cf9fca0ce0
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyfi:1nK6a+qdOOtEvwDpj9

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3248	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3104-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0009000000023410-13.dat	upx
behavioral2/memory/3104-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3248-26-0x0000000000500000-0x000000000050F311-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_3170f811bdf996cbb397f1717ed1ade9_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 3104 wrote to memory of 3248	3104	2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe	82
PID 3104 wrote to memory of 3248	3104	2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe	82
PID 3104 wrote to memory of 3248	3104	2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_3170f811bdf996cbb397f1717ed1ade9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3104
- 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:3248

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
67KB

MD5
a5851cd04e7be6005ca300352b7884a7

SHA1
774d916b55d1b3cfba23e082d2dd10e0891602da

SHA256
1ee7ef292a320fefaa0fff9d7c220627b420ad1ce689bf034107521e0b791d57

SHA512
7dcd8de2dfeb6607661f288a5cd8e79ba7f96e3b951c38c5bae3550e185cbd48174c52b315c43cd05bb2ad16c9b4c677bc816e907ff1eeb09d7d06079868d624

Download Submit
memory/3104-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3104-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3104-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3104-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3104-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3248-19-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3248-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3248-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download