afbdfcf277b0d12d1d20c216cbe9a3d534f426f7f3cdbc2419454f75238f484f

Analysis

max time kernel
92s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 01:21

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General

Target

2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
Size

59KB
MD5

c89e9f393d8ae8daddedf05fda291451
SHA1

1b4e23734d1a51045611e9dc9bc5928f1e9437a4
SHA256

afbdfcf277b0d12d1d20c216cbe9a3d534f426f7f3cdbc2419454f75238f484f
SHA512

65762ca76d9aed0252b8170e1837442d0bccfb6f5d57f74bfe1fd65dc0858fb89ed57a79141aa4f8954bf4588ba76e9075bf22f0eb3f69caa1b0c6b7d86b6237
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgcSn:bP9g/xtCS3Dxx0L

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4156	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4564-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x00090000000233e3-13.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	2024-09-07_c89e9f393d8ae8daddedf05fda291451_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 4564 wrote to memory of 4156	4564	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	85
PID 4564 wrote to memory of 4156	4564	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	85
PID 4564 wrote to memory of 4156	4564	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4564
- 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:4156

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
59KB

MD5
6c193883e05ceb1e37a2465795397a99

SHA1
fca0d0712e7591fdf586c8192c36a54432777b2b

SHA256
d531ae1eeeb3db9f9f1ce5d23fbe9f906aba1b7f3f505c7187aad3999f2372e8

SHA512
983bc8451c971fba4ab0a5f095bd1902be0e9cc03bf36a48b276b26e52baf34b654ee46436555055ef773accb7fdcdad6467c98a68d430e4ba404117862b93d0

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

Filesize
184B

MD5
a10423c789ac4a600d9c336a4f72b65d

SHA1
f0425ce006b65b3675cc5922b9d2644b6a4b5ac1

SHA256
49cf9598d7926b0f0cb35bb09bca2ce0075eda78e801c8e41ebf32ec03c438ef

SHA512
727686c8fbac70106e9cc449f9d94b9d1e80e676c6457f6f3ce0cf7e82deb95b15902f87181593f332efc8138daa618f02eafae549ef7b9626c008da0773fc5e

Download Submit
memory/4156-20-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4564-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4564-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4564-2-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4564-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download