dc65a414cb76208c960a1ae76b4b274f6a80daa4af5e52ada16e5593bd9f179a

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
28/09/2024, 04:30

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General

Target

2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe
Size

37KB
MD5

2bb658d151f6869413fbf15284fb1881
SHA1

e37ef8b07be90d11893383b382832c2afe13a0db
SHA256

dc65a414cb76208c960a1ae76b4b274f6a80daa4af5e52ada16e5593bd9f179a
SHA512

62c8ab8d0450da2095feb64028f9c5cc7988adf1ea0f4b82f29f4cda6892f9a809d5fad650e41fa7f289df785cb8ca6683283cf298e118f7da85cd09e1a910fe
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITp:qDdFJy3QMOtEvwDpjjWMl7Tp

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4288	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1084-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233ff-13.dat	upx
behavioral2/memory/1084-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4288-27-0x0000000000500000-0x0000000000510000-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	2024-09-28_2bb658d151f6869413fbf15284fb1881_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 1084 wrote to memory of 4288	1084	2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe	82
PID 1084 wrote to memory of 4288	1084	2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe	82
PID 1084 wrote to memory of 4288	1084	2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-28_2bb658d151f6869413fbf15284fb1881_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1084
- 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:4288

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
37KB

MD5
31b71ecaac578578e5cc2cf557e788b1

SHA1
c5b155b7de122b8c5d12aded3525a996eaf97e1e

SHA256
cdfea79514a1eb3b7f4dc39d694b9c713f9b71862556a1caeae88b72625a6f2d

SHA512
9727771663cbdc18a78b0208ab61f53a4feb5758e1066c65f33d3dc9b90fe4ac6b0e09b3a913995825d8e70144f1462e07a938b0bb2929cf4d1ee44e37536e10

Download Submit
memory/1084-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1084-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1084-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1084-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1084-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4288-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/4288-21-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4288-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download