271fa4a425ea28bfd8cd812bec0daf34de4ba4c0c2a8c7387ae2a7975a640b79

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2024 08:29

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General

Target

2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe
Size

69KB
MD5

a5933583b59085fea46a3f1b39644156
SHA1

028fbeb42c3b2a9cbd8951ae0d5e24de2f74bf5a
SHA256

271fa4a425ea28bfd8cd812bec0daf34de4ba4c0c2a8c7387ae2a7975a640b79
SHA512

0ceb2dcae2ad5e0ae39ead37094508aaffdeaabc591f5397a0eec6888d118be0b6a6a20b33f5322dd875f8fee4470bf5d2942e19025b93d6002c0af324a7df69
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRw:1nK6a+qdOOtEvwDpj9

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3772	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/924-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0008000000023cbd-13.dat	upx
behavioral2/memory/3772-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/924-18-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3772-27-0x0000000000500000-0x000000000050F311-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	2024-10-31_a5933583b59085fea46a3f1b39644156_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 924 wrote to memory of 3772	924	2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe	84
PID 924 wrote to memory of 3772	924	2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe	84
PID 924 wrote to memory of 3772	924	2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_a5933583b59085fea46a3f1b39644156_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:924
- 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:3772

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
69KB

MD5
6a1fac3a67ceb4d57e2cbe496d87dbaf

SHA1
13193860e3f4ac5a332a9d2687dcc0761743b3ed

SHA256
94f93a27195651c9a0e4a9d9a4313cdf548b51d41130b6b5153c25735a81f520

SHA512
0daa94f79b8414b6933fd1ff1c684ad917486b67497b666ef2a713316230e5d453ecbc56b68fd18e5ec42b64fc8edf0a4d455f334acb665595d748a96808bbaf

Download Submit
memory/924-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/924-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/924-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/924-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/924-18-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3772-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3772-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3772-21-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3772-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download