a5b6cbf36d1cc925e608ced51bcf216365f080272c2a662a3c245a2011d25fef

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
08-09-2024 06:22

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General

Target

2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe
Size

92KB
MD5

1dfc039b4d7f28411bf5d1d313e3f449
SHA1

8a18e6b34ac1a6ef3817ba2d13c2219d4a378138
SHA256

a5b6cbf36d1cc925e608ced51bcf216365f080272c2a662a3c245a2011d25fef
SHA512

d1b6dce936d3bffc8b966203c272e50e9cfbba6366abceb6f70d4f52e37c80eddefce0e843823b80b34a0ac5fb55004be648422c2d20736502f3cb44fc8c829d
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgddBK:AnBdOOtEvwDpj6zc

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	2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3920	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000023459-13.dat	upx
behavioral2/memory/3020-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3920-27-0x0000000000500000-0x000000000050F000-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	2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_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 3020 wrote to memory of 3920	3020	2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe	85
PID 3020 wrote to memory of 3920	3020	2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe	85
PID 3020 wrote to memory of 3920	3020	2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-08_1dfc039b4d7f28411bf5d1d313e3f449_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- 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:3920

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\asih.exe

Filesize
92KB

MD5
1554a412d66ca2bca3ac82ad32b07969

SHA1
fea03edbd4f6ac742a65dfd4e9312955ffdf7353

SHA256
2b32e4513b2c4a0175af116ceb9e9d7a4fa110daece21ae010467b8027fed217

SHA512
8ba41054d7f1a327cab73ef467795030e0e3a6d38a6447ee71ddaea5bca6b9c0848645d019d1109d907d4a86c7f2194788940cf678d1486135c93c1e7ad29164

Download Submit
memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3020-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3020-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3020-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3020-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3920-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3920-21-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3920-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download