6be9a689d87bf4cdb71f2156f49506caad629bbffed180dcc9dc2c98b86e77ff

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 01:22

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General

Target

2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe
Size

28KB
MD5

4e9a6ef53c3c271bdd0c39adf4734596
SHA1

ff8cf0c54380fa60ccf03452e628956a720ee1e0
SHA256

6be9a689d87bf4cdb71f2156f49506caad629bbffed180dcc9dc2c98b86e77ff
SHA512

4c35d461affa6d515bf33019803d5ad5e8ca664e9e2d6507094f65874b365ba7bb9d21afe8ea7902494889fd5e03c4c973ef978b23db120d0841c831f6d7ad9e
SSDEEP

384:bFgFQrdSmuQ8WFqxpj5cpyIuYxVe3FSr+OLfjDp+0g/HNblX7QCOBq6:bFgm5zusFUB2preAr+Ofjg0STX73OBq6

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1560	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/664-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x0009000000023463-13.dat	upx
behavioral2/memory/664-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/1560-26-0x0000000008000000-0x000000000800E000-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	2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 664 wrote to memory of 1560	664	2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe	82
PID 664 wrote to memory of 1560	664	2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe	82
PID 664 wrote to memory of 1560	664	2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_4e9a6ef53c3c271bdd0c39adf4734596_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:664
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1560

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\lossy.exe

Filesize
28KB

MD5
0249bd3564ffa168224d092358c8662b

SHA1
9aeb42a3ee60967fa1d44fb6d7de4165da18b9b7

SHA256
2800f9a63a8af05c507e125a4ed62eb45667e7f0b4bac569fd37fca87e6a526d

SHA512
a19acb69deea42a0b53620ef24201058103250e85a91de38cfa92475594a1dc6f69c252ba23430622537f8201699618b5194f855ad34f5b48cef2a0db6ef056f

Download Submit
memory/664-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/664-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/664-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/664-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/664-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1560-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1560-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1560-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download