c1995de792195ef39db37ca51c1093e2923d15a8fbff0c084d2c73959a5199c0

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
26/08/2024, 07:15

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General

Target

2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe
Size

97KB
MD5

fa915b95c984c234e812139f9b5cbb39
SHA1

98934767ee0d656b29248ab212c6f9be84e86a28
SHA256

c1995de792195ef39db37ca51c1093e2923d15a8fbff0c084d2c73959a5199c0
SHA512

f9988f7e3de1d695da776d4fd6721b8057dde38ac88d6ba02d581800c89c13eda6722a4b05bf5f6402dbbea3794091ca445b69c428e6bf9dde101ad6ea44ac7f
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+a:AnBdOOtEvwDpj6zd

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3708	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3356-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023476-13.dat	upx
behavioral2/memory/3356-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3708-27-0x0000000000500000-0x000000000050F000-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	2024-08-26_fa915b95c984c234e812139f9b5cbb39_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 3356 wrote to memory of 3708	3356	2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe	84
PID 3356 wrote to memory of 3708	3356	2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe	84
PID 3356 wrote to memory of 3708	3356	2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-26_fa915b95c984c234e812139f9b5cbb39_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3356
- 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:3708

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
97KB

MD5
d00f412db1bafd0682ab8fc6e8553bf1

SHA1
13b17928a4e9a58fdd3952fd63356654f80ec4d4

SHA256
acf95cfe4b1e15e4f0306f245f09a4917334f8e0ec6b47be24802cf91612cc16

SHA512
237c15bfa46adb73ccacf15218ccebf5bc28c49cf7e3995a4f1893bd4e40f32292b4a094c1e4e6eb7f465062b5fb560e88b86b825fffa6f5db2ed24db5c62800

Download Submit
memory/3356-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3356-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3356-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3356-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3356-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3708-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3708-26-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3708-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download