1636dcd39fbcb4719ebea1873c4769a9c384bb92330f34d4cdd3976d79d6b07a

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
11/08/2024, 07:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe
Size

38KB
MD5

76fccf3ea0c30a57f9d6c3f7171093ec
SHA1

15258fb215b47c105eb1c5d6fc02543c12053a4d
SHA256

1636dcd39fbcb4719ebea1873c4769a9c384bb92330f34d4cdd3976d79d6b07a
SHA512

6f426b0a1348e07fd66a933d0c5faea4135808bd225e03934868bc778bf234e55ce84afd3bd86b984124436b30f1de7bc2119bb8529389aab27c4eeb8a100a09
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT0:qDdFJy3QMOtEvwDpjjWMl7T0

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4936	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2508-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023477-13.dat	upx
behavioral2/memory/2508-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4936-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4936-28-0x0000000000500000-0x0000000000510000-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	2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_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 2508 wrote to memory of 4936	2508	2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe	86
PID 2508 wrote to memory of 4936	2508	2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe	86
PID 2508 wrote to memory of 4936	2508	2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-11_76fccf3ea0c30a57f9d6c3f7171093ec_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2508
- 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:4936

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

Loading Replay Monitor...

Downloads

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

Filesize
38KB

MD5
5435d048e94eb4660b883cb07f1936b1

SHA1
d2675e565b3354624b15dc388f1f616b5cd07dbd

SHA256
f7cf2d440c86c2e82c08aebebc785c347f519de0e39f4fe2eca9984f03a5f7d1

SHA512
ecd1e7abbe8c44083c703d031cdd2c730cd5edf724c256eb0e66edacd97e6e3637fd58864224594a5e0303316a9e098e60cf424a0b376dfceff48e6947e9e96a

Download Submit
memory/2508-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2508-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2508-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2508-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2508-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4936-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4936-27-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4936-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4936-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download