ba997f148800067fb46ad8865e9ad50e5a5d09126c5d4a4f4d6e9a6e26ad9334

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
24-08-2024 06:54

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General

Target

2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe
Size

38KB
MD5

4f905233137bf4616ea9b2769ef8bd92
SHA1

bbfb062886e1f5a6c9dff7a030c67034c1bd8903
SHA256

ba997f148800067fb46ad8865e9ad50e5a5d09126c5d4a4f4d6e9a6e26ad9334
SHA512

bbdf50ba38d861d30da1a9f6ab001fa05fccbbfe68caed054a6a63fa8ebb484c74b20f172aff331ad70c7d790417f8d9fa01167a11da6aafadc6e136e9316920
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITc:qDdFJy3QMOtEvwDpjjWMl7Tc

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2608	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/868-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023465-13.dat	upx
behavioral2/memory/868-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2608-26-0x0000000000500000-0x0000000000510000-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	2024-08-24_4f905233137bf4616ea9b2769ef8bd92_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 868 wrote to memory of 2608	868	2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe	84
PID 868 wrote to memory of 2608	868	2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe	84
PID 868 wrote to memory of 2608	868	2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-24_4f905233137bf4616ea9b2769ef8bd92_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:868
- 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:2608

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
38KB

MD5
d6dc8f1aad32ed1e170a13fc59385c26

SHA1
4f94e0e28fc917fe264f90ed8584cb0c24cf6dca

SHA256
1f44a67faeea1c572a6e47e710d254a122eeb05f24ef7a47a813c23fd5e880cc

SHA512
fc077b62ea9c3ec65b8c7913022fd1a85fe4d139a5adc6f5ab814f644cd373e023720922528916fc9a571cf28c88bc91212a3e47236278f614f19a83c95415ba

Download Submit
memory/868-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/868-1-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/868-2-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/868-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/868-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2608-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2608-22-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download