5df4df4ab91fd8a1f0e5a4f0902ae556fe6d93c71f1bc83b56acf82135b9c3a9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 07:06

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General

Target

2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe
Size

38KB
MD5

f6999fb566ec648d8f84eaa197dd1053
SHA1

1ebbb2a61e3819818e41df654ee358e57d5722ac
SHA256

5df4df4ab91fd8a1f0e5a4f0902ae556fe6d93c71f1bc83b56acf82135b9c3a9
SHA512

85222aa24ed5466f17fe86fcd8aaba40a60a46cf2fc34f2da6442e2a4203fa2d9bc5836bc9c4f39749026e933ea413cd103eff3481d223fcfd2c55348029a4a8
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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4732	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023c9d-13.dat	upx
behavioral2/memory/2440-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4732-27-0x0000000000500000-0x0000000000510000-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	2024-11-21_f6999fb566ec648d8f84eaa197dd1053_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 2440 wrote to memory of 4732	2440	2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe	83
PID 2440 wrote to memory of 4732	2440	2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe	83
PID 2440 wrote to memory of 4732	2440	2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_f6999fb566ec648d8f84eaa197dd1053_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- 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:4732

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
38KB

MD5
9e31e3f41221a8b2a2780a5b2b8c5104

SHA1
b68156b5a3bbbade6a6d441a10cd225b23b4ea74

SHA256
2c536792d4cd7bbd03db049756db89d0d53e31969b04fbcef9072d1d8dbe3006

SHA512
2036c2f679ea74ffc0bce41d66360f9e191b412cef188b422f72faedd00f554e4b8cc66eff53c1618f8178eace3debc76a741a0570baebbb9d565ca8be245444

Download Submit
memory/2440-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2440-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2440-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2440-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2440-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4732-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4732-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4732-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download