bda67d7f14b053628cfba9b86bc4df7351a98867658f263057e9e6fcda0a8faa

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
23/08/2024, 08:22

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General

Target

2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe
Size

39KB
MD5

1590880c2a4a1e285f165251157efc79
SHA1

6699c4ba603ecabf26298f364a6f5978b566a516
SHA256

bda67d7f14b053628cfba9b86bc4df7351a98867658f263057e9e6fcda0a8faa
SHA512

4d7cad385da0d7c9e5d4b590a7d84dc9578fe0b43d2ed96100687f98ab2b668774dd1c2f4c73f61cdd961a8abac7f8c9765fdbfca7689061f926c1afb20fe327
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITP:qDdFJy3QMOtEvwDpjjWMl7TP

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
708	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4388-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a00000002347e-13.dat	upx
behavioral2/memory/4388-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/708-26-0x0000000000500000-0x0000000000510000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 708	4388	2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe	85
PID 4388 wrote to memory of 708	4388	2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe	85
PID 4388 wrote to memory of 708	4388	2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-23_1590880c2a4a1e285f165251157efc79_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388
- 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:708

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

Replay Monitor

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Downloads

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

Filesize
39KB

MD5
c46166489b0804f4df329a2a663a8d70

SHA1
512931f6c63d264c6b44d1d6ebefee5fd5e955a1

SHA256
05f78eeb2a171589a54cdd3cce1a403cd818892393b57c209dc4bff21b12a9c8

SHA512
d035faa6e9f903a59e22bba6f66968c1b52708a3ed7f9fc30122684a4859cf5514a452e22004b4d5ca02a6a90341897d9d43f9744bae7d50cacdabda092ab777

Download Submit
memory/708-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/708-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/708-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4388-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4388-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/4388-2-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/4388-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4388-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download