7df1814016adcc499ac478fbbbc7f0ebcba956c961fb438c611633787c0988c1

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 15:44

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General

Target

2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe
Size

54KB
MD5

18421806f921b0c9c020a4e0af6ef8ac
SHA1

c7dd8f79029b2d2e900f489f6bc0cf37ec5af296
SHA256

7df1814016adcc499ac478fbbbc7f0ebcba956c961fb438c611633787c0988c1
SHA512

5bb0adb9dc79dbdc6cdd81d00ba4cddaaa0c5b163fc5255d67442c73987ae74d0118574bac238c8d5ccd2addbe5b61983d051eca2bb3c68e9803611f7686b2a1
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOk/91:z6QFElP6n+gKmddpMOtEvwDpj31ik/91

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4316	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2344-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a000000023473-13.dat	upx
behavioral2/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4316-26-0x0000000000500000-0x0000000000510000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 4316	2344	2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe	85
PID 2344 wrote to memory of 4316	2344	2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe	85
PID 2344 wrote to memory of 4316	2344	2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-18_18421806f921b0c9c020a4e0af6ef8ac_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344
- 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:4316

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
55KB

MD5
ddc4b878c98031cc4b406265458458a8

SHA1
75fbad6b3318ffb455c65df11ccc67267b61ba10

SHA256
348d1d685f11c97ddee3b3c0778a8732931fe6c729829c75f27d6f363d612fd6

SHA512
a694ab91d5e36dc7797a0b7b7cf0da08ced8340b84cc8731074352033ee0e47a45fff89c512a059f1199d720e2c053ee13846f5a2f4cb8149d4d5d93421581cd

Download Submit
memory/2344-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2344-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2344-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2344-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4316-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4316-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4316-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download