1748ca0a81db7efe6ad42f53c01da1ab5dda81c05c87afa71b5ff8d9c83cdf8d

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 05:25

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General

Target

2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe
Size

61KB
MD5

2707cbb6d548e6eca78d6e9984ebd4ec
SHA1

4a8bb7bbe738dff79a03eeb0974a8b99bbc8e6d0
SHA256

1748ca0a81db7efe6ad42f53c01da1ab5dda81c05c87afa71b5ff8d9c83cdf8d
SHA512

c4e34daae8e2d80e6d50f6dd7fa1551e10de38b7bf79a44df97fef79ee3afc3b7fe3645adaf091f59718743be090e9875e553bc50a1525c8e7db5f5238a0b05a
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYhPL:1nK6a+qdOOtEvwDpj+

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3184	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4656-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000a0000000234a7-13.dat	upx
behavioral2/memory/4656-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3184-26-0x0000000000500000-0x000000000050F311-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 3184	4656	2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe	82
PID 4656 wrote to memory of 3184	4656	2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe	82
PID 4656 wrote to memory of 3184	4656	2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_2707cbb6d548e6eca78d6e9984ebd4ec_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- 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:3184

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
61KB

MD5
20220a779221aa95be355bd0e3f5fb4b

SHA1
9c7efb6daeb357f2b2c5c6de61962f8a8c018ad5

SHA256
e9aec60078ac4aa45865f523e824ca92f1b7332c5b277635d050d41f204e70ea

SHA512
2b3886d14a0d39f70dd2621e69ba78fcbfa13586cb5c315ffb802801d97bcc8dbf60e81770af9c3a10a875c2c32a530161ad0291d3030a764c18e12930190bce

Download Submit
memory/3184-19-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3184-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3184-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4656-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4656-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4656-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4656-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4656-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download