64fe1ec20cac0633d6954db979b606e37d89fee03f31276f72000c98862ca104

Analysis

max time kernel
148s
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
08/09/2024, 19:02

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General

Target

2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe
Size

37KB
MD5

771c7db44792debb4756bd8b92c11b5e
SHA1

2c973e71df36f812ee9bab6da285701beab7cf6e
SHA256

64fe1ec20cac0633d6954db979b606e37d89fee03f31276f72000c98862ca104
SHA512

6015ac1198a4b8d650680b85d152ff3fc1e662f477100ca95b7245ab0593abf7f9dc37d5b2364d2fa8a98e77d00fe6f73d83e5e4c28ac8cded80f262b35981ee
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITw:qDdFJy3QMOtEvwDpjjWMl7Tw

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3212-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023462-13.dat	upx
behavioral2/memory/3212-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4156-27-0x0000000000500000-0x0000000000510000-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	2024-09-08_771c7db44792debb4756bd8b92c11b5e_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 3212 wrote to memory of 4156	3212	2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe	83
PID 3212 wrote to memory of 4156	3212	2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe	83
PID 3212 wrote to memory of 4156	3212	2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-08_771c7db44792debb4756bd8b92c11b5e_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3212
- 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:4156

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
38KB

MD5
aaf923e617f80a6760d59eda81b805c9

SHA1
e07362a2127d480d058c78970e29ae1fa34a9610

SHA256
5d6cb38d28b8ff8ee6512f59097f47d866c2d2bf52a589b3f8fc5285646a1c26

SHA512
9cb32f99e5b18539ee3662a59d7e6826d6d369077b11ef55181d6aa9d6c7f131b1aa2b51eb4f71071ec887236cc84892545c1ab8cb9946968cad6a7974ba5ef5

Download Submit
memory/3212-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3212-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3212-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3212-4-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3212-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4156-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4156-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4156-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download