21c7ae9d39bb043533dc137737993c4736cb6ebd528950ecbce486ac97991fb6

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 17:56

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General

Target

20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe
Size

91KB
MD5

e63ad7d39f46eda10a2d7f323e37d80c
SHA1

6fdf357dd360548fffbf3cf414c9efb3898160f6
SHA256

21c7ae9d39bb043533dc137737993c4736cb6ebd528950ecbce486ac97991fb6
SHA512

8b0ef2ff385781633dcb2de17385f7fb9945b96aca1a6b06ec4e9aafce9bf9737ca25997adc9292ad7aa8016833e40ff6d9a53ac54ba9d7a0a0b186c0132d836
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA/DV:n6a+1SEOtEvwDpjYYvQd2P6

Score

7^/10

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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1776	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/320-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000022f51-13.dat	upx
behavioral2/memory/320-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1776-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 1776	320	20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe	85
PID 320 wrote to memory of 1776	320	20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe	85
PID 320 wrote to memory of 1776	320	20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521e63ad7d39f46eda10a2d7f323e37d80ccryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1776

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
91KB

MD5
72ee48df6c53c3404d24a88f57af402a

SHA1
345d24754089dc929a3771653dad8d199cbd4b92

SHA256
885632e20ccb52802c7a30057d8a5a59f8fdc6458c5b010fbbe20ecf8a4d0c68

SHA512
791009125b6c835f1b4ff43642336a760775027e27e1aaf97cce3577532b54ae0dbafa377fc03ea7683901aefb095ab9d3c33dffb4b9711bbf15b235bf43c2ff

Download Submit
memory/320-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/320-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/320-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/320-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/320-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1776-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download