36e665ed39eb998c8a9b34e3d75b93cfeecdb0781b7fcc1f807bc23a8055b940

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2024, 18:21

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General

Target

2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe
Size

58KB
MD5

9c43144ec94589a46b18e9ae1b3df5c1
SHA1

a2b46c9f15324abbf12ffa5452a1aa0f8959d92b
SHA256

36e665ed39eb998c8a9b34e3d75b93cfeecdb0781b7fcc1f807bc23a8055b940
SHA512

90aedce010c0100a062ca97f43539c4e47528ee621be03884dd69bba317c8446d324a406fb0279d99ad1163ffdc80daa2f516b8242c29a306c147c96546e164f
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlY8:bP9g/xtCS3Dxx0L8

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2492	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4380-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000c000000023b8f-13.dat	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	2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 2492	4380	2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe	85
PID 4380 wrote to memory of 2492	4380	2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe	85
PID 4380 wrote to memory of 2492	4380	2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-19_9c43144ec94589a46b18e9ae1b3df5c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2492

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\gewos.exe

Filesize
58KB

MD5
2cdc45b00dd89dbc2d3a26413c577253

SHA1
b8948fafc5a87f07fa42ca591228280bdd4be79a

SHA256
304693e862f702bf863e9f316702b6633275bc78cee8bacdc8b18081d1abb166

SHA512
3b39a74afdcc0f0adde50a8c29fd3179f1ed6ef6dea3e3668a055572f8068f040fdc276a19519d969761bad1a329115d7ef1c9046ca8e8245ba346de2866d7d0

Download Submit
memory/2492-26-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/4380-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4380-1-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4380-2-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4380-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download