ed0047491684b1abbe85de47ce8b1d3a754e503414a68aa94d436f0ac28a4e62

Analysis

max time kernel
79s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:34

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General

Target

2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe
Size

58KB
MD5

dac275f636b946eb09d5e81ee7a36365
SHA1

7b5d276b6ece7d7894835b8214d67bf8522b24ff
SHA256

ed0047491684b1abbe85de47ce8b1d3a754e503414a68aa94d436f0ac28a4e62
SHA512

a667cbc518e1c1965baeb2295e0241bfcc8bbcc17092f4825e8cc2ab917f79f9d62cdc92d3a7fc60e98563b68be054deaca3d13bcf0ade0c58d07427e724848b
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlYrG:bP9g/xtCS3Dxx0La

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2304	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3028-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000800000002346a-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	2024-09-19_dac275f636b946eb09d5e81ee7a36365_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 3028 wrote to memory of 2304	3028	2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe	84
PID 3028 wrote to memory of 2304	3028	2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe	84
PID 3028 wrote to memory of 2304	3028	2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_dac275f636b946eb09d5e81ee7a36365_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028
- 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:2304

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\gewos.exe

Filesize
58KB

MD5
5142efec67d124de36234bccc9f23179

SHA1
5389f7ad006f6a5b8587b2c6aecdc5f700804355

SHA256
02a8210656d0cd342a65677ad12b75244094ec1f9071614a82e9a437c757eaf2

SHA512
d7e8bf97d67db7902f6d90480dfe0523d9abf7d4585179bbf8f3818aa664db73376ea9e0ec8b234c7cf89bbd288b348a96eee53d02332a4e7ea644b2a55afd04

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
184B

MD5
48489cae7adc44b7314801d923bd985e

SHA1
87d006c7592d6b0a1c7522a5e25524411041c04f

SHA256
dd16cdd6dac24c8a95a9e7e36a0dad8fe1607fb27b18dd10036df7c462a142e0

SHA512
0e0ae4164f970d9d4951e319f762d484d21a0430fa578f912106988917cc8c4668c4cea227a976a24cff3d61c52bd4d334b0d783e83b4319f75bc5732ca36149

Download Submit
memory/2304-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3028-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3028-1-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3028-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3028-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download