fa89536ff07ff3721da19acc3d5a30ea49d7a66d181c724d1d509e8ecf36e33c

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
02-10-2024 01:26

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General

Target

2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe
Size

36KB
MD5

41f5294fc5eb78bde30e515c3227e6e9
SHA1

677d1b7aaae28abb7f111d4bf888f1ae16f80629
SHA256

fa89536ff07ff3721da19acc3d5a30ea49d7a66d181c724d1d509e8ecf36e33c
SHA512

54a5a840a1470d6caba4b56882bab409b42aa69c464ee42a2ba982e2d47344fe5667ed62ec8f01b21848f49db1ad3f7702d7ab4ee1a3fcad709e30f5b598688b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6o:qDdFJy3QMOtEvwDpjjWMl7T6o

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	2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2920	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1176-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000022925-13.dat	upx
behavioral2/memory/1176-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2920-27-0x0000000000500000-0x0000000000510000-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	2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_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 1176 wrote to memory of 2920	1176	2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe	82
PID 1176 wrote to memory of 2920	1176	2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe	82
PID 1176 wrote to memory of 2920	1176	2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_41f5294fc5eb78bde30e515c3227e6e9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1176
- 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:2920

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
36KB

MD5
4a456e9f55dbf563ad201ddfa0d06e36

SHA1
75f2e0ada81cf0150d82ba04ba0f58feb68836b8

SHA256
a46672ab95135ff97b84f09499d637e350a9ac37c89da6cc87d4769d60e3c9e8

SHA512
bb7eca0edad1f875a6fe42e6493fec522faa8bac51c1bb2e89857b4249567c622c846ed24c06c64ef9314d79e872ac9a3e63dd30d70141af9d35305a2d396385

Download Submit
memory/1176-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1176-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1176-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1176-3-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1176-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2920-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2920-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2920-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download