faeeb8fb48045652d8dbe0e538d95b3df44115fabca34b33f22efec59b3b6200

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
12-09-2024 16:21

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General

Target

2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe
Size

70KB
MD5

34c726f5704091aad5cd354b62e7e336
SHA1

fae06afa1768a69d568bc7ca4df301a575fa1e1f
SHA256

faeeb8fb48045652d8dbe0e538d95b3df44115fabca34b33f22efec59b3b6200
SHA512

b5e157e662bb90ca9e2e8238c1c19ceb9f72a31f53ee483666582a2ab0cacf0f3b4db4b704e289e5267ee42351e09c60c5fc60a4e92fd1922b782c2ce50f66ff
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQApI0u:78SEOtEvwDpjWYvQd2Pe

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
840	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023433-13.dat	upx
behavioral2/memory/2108-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/840-27-0x0000000000500000-0x000000000050F000-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	2024-09-12_34c726f5704091aad5cd354b62e7e336_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 2108 wrote to memory of 840	2108	2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe	84
PID 2108 wrote to memory of 840	2108	2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe	84
PID 2108 wrote to memory of 840	2108	2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-12_34c726f5704091aad5cd354b62e7e336_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- 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:840

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
71KB

MD5
5b0c0925336718ab1e1c4ae451a40469

SHA1
b84997455a3a0ef83f6998c7c8b9e0c1b7ecf87f

SHA256
2019ed2dbf5831d829c3d824ffc049c489e917f2e68558776738ccaea3401813

SHA512
9849451328db74c8783467b9e4790b6c715ded97f551cedf93b98afdc3af6a17de0856ddf24e392342fb5bd6de8140c5f2a61ac6e832594db5de7c48b56566fd

Download Submit
memory/840-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/840-26-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/840-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2108-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2108-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2108-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download