4d8669cf63b66df44d1f0a82422a2f262e5e7187d3adeb81de6f95b55d0dc745

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
12/08/2024, 13:05

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General

Target

2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe
Size

59KB
MD5

f6810ece6ad4c1f5f24a2b19edcbdfdb
SHA1

bcd9ce236e49668e6ba0b6f09e4a492f657a2bee
SHA256

4d8669cf63b66df44d1f0a82422a2f262e5e7187d3adeb81de6f95b55d0dc745
SHA512

d6877612960d4f7776fa974cf59f2bc03072ee0f8d2afed45e27817209fb38b25cbaf85a868901cd0d970629f37156bb35e68cf5bda7171c4ebd8ce79d9fe551
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+N6:z6QFElP6n+gKmddpMOtEvwDpj9aYa5

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4008-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002346d-13.dat	upx
behavioral2/memory/4008-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2148-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2148-27-0x0000000000500000-0x0000000000510000-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	2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_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 4008 wrote to memory of 2148	4008	2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe	88
PID 4008 wrote to memory of 2148	4008	2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe	88
PID 4008 wrote to memory of 2148	4008	2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-12_f6810ece6ad4c1f5f24a2b19edcbdfdb_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4008
- 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:2148

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
60KB

MD5
3ec5ec6458de640562f1b1b73f93f2d3

SHA1
62b57e1fe3752d68b64e568b47f14a8f5bf38edd

SHA256
ce929c3bc01fd8a08898b18f5d37067f0f37656d90e49bbb20b616722df316b4

SHA512
370f09f5f0e39b2cb8071f725d0de5738bf7fad919e19b40e37674b2d005b75d3b76d0bd2b89958e5c4df7406a40a215fa630912adff4f9e662a61fa07ba7dd4

Download Submit
memory/2148-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2148-20-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2148-26-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2148-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4008-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4008-1-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4008-2-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4008-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4008-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download