b5496e411b4b4dfefc6d73caa3818fdecb8193a3c6b6e65d4eb74676369777a1

Analysis

max time kernel
149s
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
19/09/2024, 03:46

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General

Target

2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe
Size

92KB
MD5

f272c7b8ba89a2964dd8ff6594f94aff
SHA1

0d3a4464560dc4af069c9f180cbe003ea942f259
SHA256

b5496e411b4b4dfefc6d73caa3818fdecb8193a3c6b6e65d4eb74676369777a1
SHA512

59abc7fcda543bc75f6541c95a53457c0d7de1f9ca362d4836b07ecac3373f98ab0a7c969fc179f595d68ead11fb63c4469d62f742571a3d319caca09576139b
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgddBj:AnBdOOtEvwDpj6zR

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3996-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023598-13.dat	upx
behavioral2/memory/3996-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3544-26-0x0000000000500000-0x000000000050F000-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	2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_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 3996 wrote to memory of 3544	3996	2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe	89
PID 3996 wrote to memory of 3544	3996	2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe	89
PID 3996 wrote to memory of 3544	3996	2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_f272c7b8ba89a2964dd8ff6594f94aff_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3996
- 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:3544

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4260,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=4004 /prefetch:8
1⤵
PID:1448

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
ef723c4d34ecb8a1a14f686a5cd72575

SHA1
8f102fbb887d2b4d7f01f07d80c2eeb74c395131

SHA256
77f6999210e56b61c0f8f7d72e4c5c9ef1be8306f6e371a123ddab9c945cbad8

SHA512
24208cb9a7fc421e4e042a3c84fd0844cc6d953697b8519a737696ddd3d1a63a92cc5e42fa0f1aa25c745b69e1cb321f8d56e8ac2c846b8a97c460dc1abfcbec

Download Submit
memory/3544-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3996-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3996-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3996-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3996-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3996-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download